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8db38afd12
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Author SHA1 Message Date
Arnaldo Carvalho de Melo
8db38afd12 tools kvm headers arm64: Update KVM headers from the kernel sources 
To pick the changes from:

  34739fd95f ("KVM: arm64: Indicate SYSTEM_RESET2 in kvm_run::system_event flags field")
  583cda1b0e ("KVM: arm64: Refuse to run VCPU if the PMU doesn't match the physical CPU")

That don't causes any changes in tooling (when built on x86), only
addresses this perf build warning:

  Warning: Kernel ABI header at 'tools/arch/arm64/include/uapi/asm/kvm.h' differs from latest version at 'arch/arm64/include/uapi/asm/kvm.h'
  diff -u tools/arch/arm64/include/uapi/asm/kvm.h arch/arm64/include/uapi/asm/kvm.h

Cc: Marc Zyngier <maz@kernel.org>
Cc: Will Deacon <will@kernel.org>
Cc: Alexandru Elisei <alexandru.elisei@arm.com>
Link: https://lore.kernel.org/lkml/YkSB4Q7kWmnaqeZU@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2022-04-01 16:19:35 -03:00
Arnaldo Carvalho de Melo
672b259fed tools arch x86: Sync the msr-index.h copy with the kernel sources 
To pick up the changes in:

  991625f3dd ("x86/ibt: Add IBT feature, MSR and #CP handling")

Addressing these tools/perf build warnings:

    diff -u tools/arch/x86/include/asm/msr-index.h arch/x86/include/asm/msr-index.h
    Warning: Kernel ABI header at 'tools/arch/x86/include/asm/msr-index.h' differs from latest version at 'arch/x86/include/asm/msr-index.h'

That makes the beautification scripts to pick some new entries:

  $ tools/perf/trace/beauty/tracepoints/x86_msr.sh > before
  $ cp arch/x86/include/asm/msr-index.h tools/arch/x86/include/asm/msr-index.h
  $ tools/perf/trace/beauty/tracepoints/x86_msr.sh > after
  $ diff -u before after
  --- before	2022-03-29 16:23:07.678740040 -0300
  +++ after	2022-03-29 16:23:16.960978524 -0300
  @@ -220,6 +220,13 @@
   	[0x00000669] = "MC6_DEMOTION_POLICY_CONFIG",
   	[0x00000680] = "LBR_NHM_FROM",
   	[0x00000690] = "CORE_PERF_LIMIT_REASONS",
  +	[0x000006a0] = "IA32_U_CET",
  +	[0x000006a2] = "IA32_S_CET",
  +	[0x000006a4] = "IA32_PL0_SSP",
  +	[0x000006a5] = "IA32_PL1_SSP",
  +	[0x000006a6] = "IA32_PL2_SSP",
  +	[0x000006a7] = "IA32_PL3_SSP",
  +	[0x000006a8] = "IA32_INT_SSP_TAB",
   	[0x000006B0] = "GFX_PERF_LIMIT_REASONS",
   	[0x000006B1] = "RING_PERF_LIMIT_REASONS",
   	[0x000006c0] = "LBR_NHM_TO",
  $

And this gets rebuilt:

  CC      /tmp/build/perf/trace/beauty/tracepoints/x86_msr.o
  LD      /tmp/build/perf/trace/beauty/tracepoints/perf-in.o
  LD      /tmp/build/perf/trace/beauty/perf-in.o
  CC      /tmp/build/perf/util/amd-sample-raw.o
  LD      /tmp/build/perf/util/perf-in.o
  LD      /tmp/build/perf/perf-in.o
  LINK    /tmp/build/perf/perf

Now one can trace systemwide asking to see backtraces to where those
MSRs are being read/written with:

  # perf trace -e msr:*_msr/max-stack=32/ --filter="msr>=IA32_U_CET && msr<=IA32_INT_SSP_TAB"
  ^C#

If we use -v (verbose mode) we can see what it does behind the scenes:

  # perf trace -v -e msr:*_msr/max-stack=32/ --filter="msr>=IA32_U_CET && msr<=IA32_INT_SSP_TAB"
  Using CPUID AuthenticAMD-25-21-0
  0x6a0
  0x6a8
  New filter for msr:read_msr: (msr>=0x6a0 && msr<=0x6a8) && (common_pid != 597499 && common_pid != 3313)
  0x6a0
  0x6a8
  New filter for msr:write_msr: (msr>=0x6a0 && msr<=0x6a8) && (common_pid != 597499 && common_pid != 3313)
  mmap size 528384B
  ^C#

Example with a frequent msr:

  # perf trace -v -e msr:*_msr/max-stack=32/ --filter="msr==IA32_SPEC_CTRL" --max-events 2
  Using CPUID AuthenticAMD-25-21-0
  0x48
  New filter for msr:read_msr: (msr==0x48) && (common_pid != 2612129 && common_pid != 3841)
  0x48
  New filter for msr:write_msr: (msr==0x48) && (common_pid != 2612129 && common_pid != 3841)
  mmap size 528384B
  Looking at the vmlinux_path (8 entries long)
  symsrc__init: build id mismatch for vmlinux.
  Using /proc/kcore for kernel data
  Using /proc/kallsyms for symbols
     0.000 Timer/2525383 msr:write_msr(msr: IA32_SPEC_CTRL, val: 6)
                                       do_trace_write_msr ([kernel.kallsyms])
                                       do_trace_write_msr ([kernel.kallsyms])
                                       __switch_to_xtra ([kernel.kallsyms])
                                       __switch_to ([kernel.kallsyms])
                                       __schedule ([kernel.kallsyms])
                                       schedule ([kernel.kallsyms])
                                       futex_wait_queue_me ([kernel.kallsyms])
                                       futex_wait ([kernel.kallsyms])
                                       do_futex ([kernel.kallsyms])
                                       __x64_sys_futex ([kernel.kallsyms])
                                       do_syscall_64 ([kernel.kallsyms])
                                       entry_SYSCALL_64_after_hwframe ([kernel.kallsyms])
                                       __futex_abstimed_wait_common64 (/usr/lib64/libpthread-2.33.so)
     0.030 :0/0 msr:write_msr(msr: IA32_SPEC_CTRL, val: 2)
                                       do_trace_write_msr ([kernel.kallsyms])
                                       do_trace_write_msr ([kernel.kallsyms])
                                       __switch_to_xtra ([kernel.kallsyms])
                                       __switch_to ([kernel.kallsyms])
                                       __schedule ([kernel.kallsyms])
                                       schedule_idle ([kernel.kallsyms])
                                       do_idle ([kernel.kallsyms])
                                       cpu_startup_entry ([kernel.kallsyms])
                                       secondary_startup_64_no_verify ([kernel.kallsyms])
  #

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/YkNd7Ky+vi7H2Zl2@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2022-04-01 16:19:35 -03:00
Arnaldo Carvalho de Melo
6d05e13985 tools headers UAPI: Sync asm-generic/mman-common.h with the kernel 
To pick the changes from:

  9457056ac4 ("mm: madvise: MADV_DONTNEED_LOCKED")

That result in these changes in the tools:

  $ diff -u tools/include/uapi/asm-generic/mman-common.h include/uapi/asm-generic/mman-common.h
  --- tools/include/uapi/asm-generic/mman-common.h	2022-03-29 16:17:50.461694991 -0300
  +++ include/uapi/asm-generic/mman-common.h	2022-03-27 19:12:48.923250468 -0300
  @@ -75,6 +75,8 @@
   #define MADV_POPULATE_READ	22	/* populate (prefault) page tables readable */
   #define MADV_POPULATE_WRITE	23	/* populate (prefault) page tables writable */

  +#define MADV_DONTNEED_LOCKED	24	/* like DONTNEED, but drop locked pages too */
  +
   /* compatibility flags */
   #define MAP_FILE	0

  $ tools/perf/trace/beauty/madvise_behavior.sh > before
  $ cp include/uapi/asm-generic/mman-common.h tools/include/uapi/asm-generic/mman-common.h
  $ tools/perf/trace/beauty/madvise_behavior.sh > after
  $ diff -u before after
  --- before	2022-03-29 16:18:04.091044244 -0300
  +++ after	2022-03-29 16:18:11.692238906 -0300
  @@ -20,6 +20,7 @@
   	[21] = "PAGEOUT",
   	[22] = "POPULATE_READ",
   	[23] = "POPULATE_WRITE",
  +	[24] = "DONTNEED_LOCKED",
   	[100] = "HWPOISON",
   	[101] = "SOFT_OFFLINE",
   };
  $

I.e. now when madvise gets those behaviours as args, 'perf trace' will
be able to translate from the number to a human readable string and to
use the strings in tracepoint filter expressions.

This addresses the following perf build warning:

  Warning: Kernel ABI header at 'tools/include/uapi/asm-generic/mman-common.h' differs from latest version at 'include/uapi/asm-generic/mman-common.h'
  diff -u tools/include/uapi/asm-generic/mman-common.h include/uapi/asm-generic/mman-common.h

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lore.kernel.org/lkml/YkNcUfeh795yqGMV@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2022-04-01 16:19:35 -03:00
Arnaldo Carvalho de Melo
9a195da42f perf beauty: Update copy of linux/socket.h with the kernel sources 
To pick the changes in:

  a6a6fe27ba ("net/smc: Dynamic control handshake limitation by socket options")

This automagically adds support for the SOL_MNC socket level:

  $ diff -u tools/perf/trace/beauty/include/linux/socket.h include/linux/socket.h
  --- tools/perf/trace/beauty/include/linux/socket.h	2022-03-14 17:55:22.277148656 -0300
  +++ include/linux/socket.h	2022-03-27 19:12:48.908250063 -0300
  @@ -366,6 +366,7 @@
   #define SOL_XDP		283
   #define SOL_MPTCP	284
   #define SOL_MCTP	285
  +#define SOL_SMC		286

   /* IPX options */
   #define IPX_TYPE	1
  $ tools/perf/trace/beauty/socket.sh > before
  $ cp include/linux/socket.h tools/perf/trace/beauty/include/linux/socket.h
  $ tools/perf/trace/beauty/socket.sh > after
  $ diff -u before after
  --- before	2022-03-29 11:47:56.390258780 -0300
  +++ after	2022-03-29 11:48:03.158436189 -0300
  @@ -67,6 +67,7 @@
   	[283] = "XDP",
   	[284] = "MPTCP",
   	[285] = "MCTP",
  +	[286] = "SMC",
   };

   DEFINE_STRARRAY(socket_level, "SOL_");
  $

This will allow 'perf trace' to translate 286 into "SMC" as is done with
the other socket levels:

  # perf trace -e setsockopt --max-events 4
   344.916 ( 0.003 ms): Socket Thread/3816 setsockopt(fd: 168, level: TCP, optname: 5, optval: 0x7f5797b9c4f8, optlen: 4) = 0
   344.920 ( 0.002 ms): Socket Thread/3816 setsockopt(fd: 168, level: TCP, optname: 6, optval: 0x7f5797b9c4f4, optlen: 4) = 0
  1246.974 ( 0.010 ms): systemd-resolv/1128 setsockopt(fd: 22, level: IP, optname: 11, optval: 0x7ffc96cd7244, optlen: 4) = 0
  1246.986 ( 0.002 ms): systemd-resolv/1128 setsockopt(fd: 22, level: IP, optname: 8, optval: 0x7ffc96cd7264, optlen: 4) = 0

This addresses this perf build warning:

  Warning: Kernel ABI header at 'tools/perf/trace/beauty/include/linux/socket.h' differs from latest version at 'include/linux/socket.h'
  diff -u tools/perf/trace/beauty/include/linux/socket.h include/linux/socket.h

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: D. Wythe <alibuda@linux.alibaba.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lore.kernel.org/lkml/YkMdpzzjPu5VZtW3@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2022-04-01 16:19:34 -03:00
Arnaldo Carvalho de Melo
4d4d00dd32 perf tools: Update copy of libbpf's hashmap.c 
To pick the changes in:

  fba60b171a ("libbpf: Use IS_ERR_OR_NULL() in hashmap__free()")

That don't entail any changes in tools/perf.

This addresses this perf build warning:

  Warning: Kernel ABI header at 'tools/perf/util/hashmap.h' differs from latest version at 'tools/lib/bpf/hashmap.h'
  diff -u tools/perf/util/hashmap.h tools/lib/bpf/hashmap.h

Not a kernel ABI, its just that this uses the mechanism in place for
checking kernel ABI files drift.

Cc: Andrii Nakryiko <andrii@kernel.org>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mauricio Vásquez <mauricio@kinvolk.io>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lore.kernel.org/lkml/YkMb2SAIai2VeuUD@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2022-04-01 16:19:34 -03:00
Ian Rogers
8a96f454f5 perf stat: Avoid SEGV if core.cpus isn't set 
Passing NULL to perf_cpu_map__max doesn't make sense as there is no
valid max. Avoid this problem by null checking in
perf_stat_init_aggr_mode.

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Antonov <alexander.antonov@linux.intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Andrii Nakryiko <andrii@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: German Gomez <german.gomez@arm.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Fastabend <john.fastabend@gmail.com>
Cc: John Garry <john.garry@huawei.com>
Cc: KP Singh <kpsingh@kernel.org>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Martin KaFai Lau <kafai@fb.com>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Riccardo Mancini <rickyman7@gmail.com>
Cc: Song Liu <songliubraving@fb.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Yonghong Song <yhs@fb.com>
Cc: bpf@vger.kernel.org
Cc: coresight@lists.linaro.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: netdev@vger.kernel.org
Link: http://lore.kernel.org/lkml/20220328062414.1893550-5-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2022-04-01 16:19:34 -03:00
Yinan Zhang
d8b7b3fa9f tools/vm/page_owner_sort.c: remove -c option 
The -c option is used to cull by stacktrace.  Now, --cull option has
been Added in page_owner_sort.c.  Culling by stacktrace is one of the
function of "--cull".  No need to set an extra parameter.  So remove -c
option.

Remove parsing of -c when parse parameter and remove "-c" from usage.

This work is coauthored by
        Shenghong Han
        Yixuan Cao
        Chongxi Zhao
        Jiajian Ye
        Yuhong Feng
        Yongqiang Liu

Link: https://lkml.kernel.org/r/20220326085920.1470081-1-zhangyinan2019@email.szu.edu.cn
Signed-off-by: Yinan Zhang <zhangyinan2019@email.szu.edu.cn>
Cc: Chongxi Zhao <zhaochongxi2019@email.szu.edu.cn>
Cc: Georgi Djakov <georgi.djakov@linaro.org>
Cc: Jiajian Ye <yejiajian2018@email.szu.edu.cn>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Sean Anderson <seanga2@gmail.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Tang Bin <tangbin@cmss.chinamobile.com>
Cc: Yixuan Cao <caoyixuan2019@email.szu.edu.cn>
Cc: Yongqiang Liu <liuyongqiang13@huawei.com>
Cc: Yuhong Feng <yuhongf@szu.edu.cn>
Cc: Zhenliang Wei <weizhenliang@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2022-04-01 11:46:09 -07:00
Linus Torvalds
f4f5d7cfb2 virtio: features, fixes 
vdpa generic device type support
 More virtio hardening for broken devices
 On the same theme, revert some virtio hotplug hardening patches -
 they were misusing some interrupt flags, will have to be reverted.
 RSS support in virtio-net
 max device MTU support in mlx5 vdpa
 akcipher support in virtio-crypto
 shared IRQ support in ifcvf vdpa
 a minor performance improvement in vhost
 Enable virtio mem for ARM64
 beginnings of advance dma support
 
 Cleanups, fixes all over the place.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull virtio updates from Michael Tsirkin:

 - vdpa generic device type support

 - more virtio hardening for broken devices (but on the same theme,
   revert some virtio hotplug hardening patches - they were misusing
   some interrupt flags and had to be reverted)

 - RSS support in virtio-net

 - max device MTU support in mlx5 vdpa

 - akcipher support in virtio-crypto

 - shared IRQ support in ifcvf vdpa

 - a minor performance improvement in vhost

 - enable virtio mem for ARM64

 - beginnings of advance dma support

 - cleanups, fixes all over the place

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (33 commits)
  vdpa/mlx5: Avoid processing works if workqueue was destroyed
  vhost: handle error while adding split ranges to iotlb
  vdpa: support exposing the count of vqs to userspace
  vdpa: change the type of nvqs to u32
  vdpa: support exposing the config size to userspace
  vdpa/mlx5: re-create forwarding rules after mac modified
  virtio: pci: check bar values read from virtio config space
  Revert "virtio_pci: harden MSI-X interrupts"
  Revert "virtio-pci: harden INTX interrupts"
  drivers/net/virtio_net: Added RSS hash report control.
  drivers/net/virtio_net: Added RSS hash report.
  drivers/net/virtio_net: Added basic RSS support.
  drivers/net/virtio_net: Fixed padded vheader to use v1 with hash.
  virtio: use virtio_device_ready() in virtio_device_restore()
  tools/virtio: compile with -pthread
  tools/virtio: fix after premapped buf support
  virtio_ring: remove flags check for unmap packed indirect desc
  virtio_ring: remove flags check for unmap split indirect desc
  virtio_ring: rename vring_unmap_state_packed() to vring_unmap_extra_packed()
  net/mlx5: Add support for configuring max device MTU
  ...
 2022-03-31 13:57:15 -07:00
Linus Torvalds
b8321ed4a4 Kbuild updates for v5.18 
- Add new environment variables, USERCFLAGS and USERLDFLAGS to allow
    additional flags to be passed to user-space programs.
 
  - Fix missing fflush() bugs in Kconfig and fixdep
 
  - Fix a minor bug in the comment format of the .config file
 
  - Make kallsyms ignore llvm's local labels, .L*
 
  - Fix UAPI compile-test for cross-compiling with Clang
 
  - Extend the LLVM= syntax to support LLVM=<suffix> form for using a
    particular version of LLVm, and LLVM=<prefix> form for using custom
    LLVM in a particular directory path.
 
  - Clean up Makefiles
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Merge tag 'kbuild-v5.18-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild updates from Masahiro Yamada:

 - Add new environment variables, USERCFLAGS and USERLDFLAGS to allow
   additional flags to be passed to user-space programs.

 - Fix missing fflush() bugs in Kconfig and fixdep

 - Fix a minor bug in the comment format of the .config file

 - Make kallsyms ignore llvm's local labels, .L*

 - Fix UAPI compile-test for cross-compiling with Clang

 - Extend the LLVM= syntax to support LLVM=<suffix> form for using a
   particular version of LLVm, and LLVM=<prefix> form for using custom
   LLVM in a particular directory path.

 - Clean up Makefiles

* tag 'kbuild-v5.18-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  kbuild: Make $(LLVM) more flexible
  kbuild: add --target to correctly cross-compile UAPI headers with Clang
  fixdep: use fflush() and ferror() to ensure successful write to files
  arch: syscalls: simplify uapi/kapi directory creation
  usr/include: replace extra-y with always-y
  certs: simplify empty certs creation in certs/Makefile
  certs: include certs/signing_key.x509 unconditionally
  kallsyms: ignore all local labels prefixed by '.L'
  kconfig: fix missing '# end of' for empty menu
  kconfig: add fflush() before ferror() check
  kbuild: replace $(if A,A,B) with $(or A,B)
  kbuild: Add environment variables for userprogs flags
  kbuild: unify cmd_copy and cmd_shipped
 2022-03-31 11:59:03 -07:00
Linus Torvalds
2975dbdc39 Networking fixes for 5.18-rc1 and rethook patches. 
Features:
 
  - kprobes: rethook: x86: replace kretprobe trampoline with rethook
 
 Current release - regressions:
 
  - sfc: avoid null-deref on systems without NUMA awareness
    in the new queue sizing code
 
 Current release - new code bugs:
 
  - vxlan: do not feed vxlan_vnifilter_dump_dev with non-vxlan devices
 
  - eth: lan966x: fix null-deref on PHY pointer in timestamp ioctl
    when interface is down
 
 Previous releases - always broken:
 
  - openvswitch: correct neighbor discovery target mask field
    in the flow dump
 
  - wireguard: ignore v6 endpoints when ipv6 is disabled and fix a leak
 
  - rxrpc: fix call timer start racing with call destruction
 
  - rxrpc: fix null-deref when security type is rxrpc_no_security
 
  - can: fix UAF bugs around echo skbs in multiple drivers
 
 Misc:
 
  - docs: move netdev-FAQ to the "process" section of the documentation
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull more networking updates from Jakub Kicinski:
 "Networking fixes and rethook patches.

  Features:

   - kprobes: rethook: x86: replace kretprobe trampoline with rethook

  Current release - regressions:

   - sfc: avoid null-deref on systems without NUMA awareness in the new
     queue sizing code

  Current release - new code bugs:

   - vxlan: do not feed vxlan_vnifilter_dump_dev with non-vxlan devices

   - eth: lan966x: fix null-deref on PHY pointer in timestamp ioctl when
     interface is down

  Previous releases - always broken:

   - openvswitch: correct neighbor discovery target mask field in the
     flow dump

   - wireguard: ignore v6 endpoints when ipv6 is disabled and fix a leak

   - rxrpc: fix call timer start racing with call destruction

   - rxrpc: fix null-deref when security type is rxrpc_no_security

   - can: fix UAF bugs around echo skbs in multiple drivers

  Misc:

   - docs: move netdev-FAQ to the 'process' section of the
     documentation"

* tag 'net-5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (57 commits)
  vxlan: do not feed vxlan_vnifilter_dump_dev with non vxlan devices
  openvswitch: Add recirc_id to recirc warning
  rxrpc: fix some null-ptr-deref bugs in server_key.c
  rxrpc: Fix call timer start racing with call destruction
  net: hns3: fix software vlan talbe of vlan 0 inconsistent with hardware
  net: hns3: fix the concurrency between functions reading debugfs
  docs: netdev: move the netdev-FAQ to the process pages
  docs: netdev: broaden the new vs old code formatting guidelines
  docs: netdev: call out the merge window in tag checking
  docs: netdev: add missing back ticks
  docs: netdev: make the testing requirement more stringent
  docs: netdev: add a question about re-posting frequency
  docs: netdev: rephrase the 'should I update patchwork' question
  docs: netdev: rephrase the 'Under review' question
  docs: netdev: shorten the name and mention msgid for patch status
  docs: netdev: note that RFC postings are allowed any time
  docs: netdev: turn the net-next closed into a Warning
  docs: netdev: move the patch marking section up
  docs: netdev: minor reword
  docs: netdev: replace references to old archives
  ...
 2022-03-31 11:23:31 -07:00
Nathan Chancellor
e9c281928c kbuild: Make $(LLVM) more flexible 
The LLVM make variable allows a developer to quickly switch between the
GNU and LLVM tools. However, it does not handle versioned binaries, such
as the ones shipped by Debian, as LLVM=1 just defines the tool variables
with the unversioned binaries.

There was some discussion during the review of the patch that introduces
LLVM=1 around versioned binaries, ultimately coming to the conclusion
that developers can just add the folder that contains the unversioned
binaries to their PATH, as Debian's versioned suffixed binaries are
really just symlinks to the unversioned binaries in /usr/lib/llvm-#/bin:

$ realpath /usr/bin/clang-14
/usr/lib/llvm-14/bin/clang

$ PATH=/usr/lib/llvm-14/bin:$PATH make ... LLVM=1

However, that can be cumbersome to developers who are constantly testing
series with different toolchains and versions. It is simple enough to
support these versioned binaries directly in the Kbuild system by
allowing the developer to specify the version suffix with LLVM=, which
is shorter than the above suggestion:

$ make ... LLVM=-14

It does not change the meaning of LLVM=1 (which will continue to use
unversioned binaries) and it does not add too much additional complexity
to the existing $(LLVM) code, while allowing developers to quickly test
their series with different versions of the whole LLVM suite of tools.

Some developers may build LLVM from source but not add the binaries to
their PATH, as they may not want to use that toolchain systemwide.
Support those developers by allowing them to supply the directory that
the LLVM tools are available in, as it is no more complex to support
than the version suffix change above.

$ make ... LLVM=/path/to/llvm/

Update and reorder the documentation to reflect these new additions.
At the same time, notate that LLVM=0 is not the same as just omitting it
altogether, which has confused people in the past.

Link: https://lore.kernel.org/r/20200317215515.226917-1-ndesaulniers@google.com/
Link: https://lore.kernel.org/r/20220224151322.072632223@infradead.org/
Suggested-by: Masahiro Yamada <masahiroy@kernel.org>
Suggested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
 2022-03-31 12:03:46 +09:00
Jason A. Donenfeld
ca93ca2340 wireguard: selftests: simplify RNG seeding 
The seed_rng() function was written to work across lots of old kernels,
back when WireGuard used a big compatibility layer. Now that things have
evolved, we can vastly simplify this, by just marking the RNG as seeded.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2022-03-30 19:14:08 -07:00
Linus Torvalds
ee96dd9614 libnvdimm for 5.18 
- Add perf support for nvdimm events, initially only for 'papr_scm'
   devices.
 
 - Deprecate the 'block aperture' support in libnvdimm, it only ever
   existed in the specification, not in shipping product.
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Merge tag 'libnvdimm-for-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm

Pull libnvdimm updates from Dan Williams:
 "The update for this cycle includes the deprecation of block-aperture
  mode and a new perf events interface for the papr_scm nvdimm driver.

  The perf events approach was acked by PeterZ.

   - Add perf support for nvdimm events, initially only for 'papr_scm'
     devices.

   - Deprecate the 'block aperture' support in libnvdimm, it only ever
     existed in the specification, not in shipping product"

* tag 'libnvdimm-for-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  nvdimm/blk: Fix title level
  MAINTAINERS: remove section LIBNVDIMM BLK: MMIO-APERTURE DRIVER
  powerpc/papr_scm: Fix build failure when
  drivers/nvdimm: Fix build failure when CONFIG_PERF_EVENTS is not set
  nvdimm/region: Delete nd_blk_region infrastructure
  ACPI: NFIT: Remove block aperture support
  nvdimm/namespace: Delete nd_namespace_blk
  nvdimm/namespace: Delete blk namespace consideration in shared paths
  nvdimm/blk: Delete the block-aperture window driver
  nvdimm/region: Fix default alignment for small regions
  docs: ABI: sysfs-bus-nvdimm: Document sysfs event format entries for nvdimm pmu
  powerpc/papr_scm: Add perf interface support
  drivers/nvdimm: Add perf interface to expose nvdimm performance stats
  drivers/nvdimm: Add nvdimm pmu structure
 2022-03-30 10:04:11 -07:00
Linus Torvalds
9ae2a14308 dma-mapping updates for Linux 5.18 
- do not zero buffer in set_memory_decrypted (Kirill A. Shutemov)
  - fix return value of dma-debug __setup handlers (Randy Dunlap)
  - swiotlb cleanups (Robin Murphy)
  - remove most remaining users of the pci-dma-compat.h API
    (Christophe JAILLET)
  - share the ABI header for the DMA map_benchmark with userspace
    (Tian Tao)
  - update the maintainer for DMA MAPPING BENCHMARK (Xiang Chen)
  - remove CONFIG_DMA_REMAP (me)
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Merge tag 'dma-mapping-5.18' of git://git.infradead.org/users/hch/dma-mapping

Pull dma-mapping updates from Christoph Hellwig:

 - do not zero buffer in set_memory_decrypted (Kirill A. Shutemov)

 - fix return value of dma-debug __setup handlers (Randy Dunlap)

 - swiotlb cleanups (Robin Murphy)

 - remove most remaining users of the pci-dma-compat.h API
   (Christophe JAILLET)

 - share the ABI header for the DMA map_benchmark with userspace
   (Tian Tao)

 - update the maintainer for DMA MAPPING BENCHMARK (Xiang Chen)

 - remove CONFIG_DMA_REMAP (me)

* tag 'dma-mapping-5.18' of git://git.infradead.org/users/hch/dma-mapping:
  dma-mapping: benchmark: extract a common header file for map_benchmark definition
  dma-debug: fix return value of __setup handlers
  dma-mapping: remove CONFIG_DMA_REMAP
  media: v4l2-pci-skeleton: Remove usage of the deprecated "pci-dma-compat.h" API
  rapidio/tsi721: Remove usage of the deprecated "pci-dma-compat.h" API
  sparc: Remove usage of the deprecated "pci-dma-compat.h" API
  agp/intel: Remove usage of the deprecated "pci-dma-compat.h" API
  alpha: Remove usage of the deprecated "pci-dma-compat.h" API
  MAINTAINERS: update maintainer list of DMA MAPPING BENCHMARK
  swiotlb: simplify array allocation
  swiotlb: tidy up includes
  swiotlb: simplify debugfs setup
  swiotlb: do not zero buffer in set_memory_decrypted()
 2022-03-29 08:50:14 -07:00
Yonghong Song
ccaff3d56a selftests/bpf: Fix clang compilation errors 
llvm upstream patch ([1]) added to issue warning for code like
  void test() {
    int j = 0;
    for (int i = 0; i < 1000; i++)
            j++;
    return;
  }

This triggered several errors in selftests/bpf build since
compilation flag -Werror is used.
  ...
  test_lpm_map.c:212:15: error: variable 'n_matches' set but not used [-Werror,-Wunused-but-set-variable]
        size_t i, j, n_matches, n_matches_after_delete, n_nodes, n_lookups;
                     ^
  test_lpm_map.c:212:26: error: variable 'n_matches_after_delete' set but not used [-Werror,-Wunused-but-set-variable]
        size_t i, j, n_matches, n_matches_after_delete, n_nodes, n_lookups;
                                ^
  ...
  prog_tests/get_stack_raw_tp.c:32:15: error: variable 'cnt' set but not used [-Werror,-Wunused-but-set-variable]
        static __u64 cnt;
                     ^
  ...

  For test_lpm_map.c, 'n_matches'/'n_matches_after_delete' are changed to be volatile
  in order to silent the warning. I didn't remove these two declarations since
  they are referenced in a commented code which might be used by people in certain
  cases. For get_stack_raw_tp.c, the variable 'cnt' is removed.

  [1] https://reviews.llvm.org/D122271

Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20220325200304.2915588-1-yhs@fb.com
 2022-03-28 20:00:11 -07:00
Jiri Olsa
ef8a257b4e bpftool: Fix generated code in codegen_asserts 
Arnaldo reported perf compilation fail with:

  $ make -k BUILD_BPF_SKEL=1 CORESIGHT=1 PYTHON=python3
  ...
  In file included from util/bpf_counter.c:28:
  /tmp/build/perf//util/bpf_skel/bperf_leader.skel.h: In function ‘bperf_leader_bpf__assert’:
  /tmp/build/perf//util/bpf_skel/bperf_leader.skel.h:351:51: error: unused parameter ‘s’ [-Werror=unused-parameter]
    351 | bperf_leader_bpf__assert(struct bperf_leader_bpf *s)
        |                          ~~~~~~~~~~~~~~~~~~~~~~~~~^
  cc1: all warnings being treated as errors

If there's nothing to generate in the new assert function,
we will get unused 's' warn/error, adding 'unused' attribute to it.

Fixes: 08d4dba6ae ("bpftool: Bpf skeletons assert type sizes")
Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Link: https://lore.kernel.org/bpf/20220328083703.2880079-1-jolsa@kernel.org
 2022-03-28 19:10:25 -07:00
Andrii Nakryiko
99dea2c664 selftests/bpf: fix selftest after random: Urandom_read tracepoint removal 
14c174633f ("random: remove unused tracepoints") removed all the
tracepoints from drivers/char/random.c, one of which,
random:urandom_read, was used by stacktrace_build_id selftest to trigger
stack trace capture.

Fix breakage by switching to kprobing urandom_read() function.

Suggested-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20220325225643.2606-1-andrii@kernel.org
 2022-03-28 19:09:23 -07:00
Geliang Tang
98870605b3 bpf: Sync comments for bpf_get_stack 
Commit ee2a098851 missed updating the comments for helper bpf_get_stack
in tools/include/uapi/linux/bpf.h. Sync it.

Fixes: ee2a098851 ("bpf: Adjust BPF stack helper functions to accommodate skip > 0")
Signed-off-by: Geliang Tang <geliang.tang@suse.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/bpf/ce54617746b7ed5e9ba3b844e55e74cb8a60e0b5.1648110794.git.geliang.tang@suse.com
 2022-03-28 19:06:35 -07:00
Milan Landaverde
8c1b211985 bpf/bpftool: Add unprivileged_bpf_disabled check against value of 2 
In [1], we added a kconfig knob that can set
/proc/sys/kernel/unprivileged_bpf_disabled to 2

We now check against this value in bpftool feature probe

[1] https://lore.kernel.org/bpf/74ec548079189e4e4dffaeb42b8987bb3c852eee.1620765074.git.daniel@iogearbox.net

Signed-off-by: Milan Landaverde <milan@mdaverde.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Quentin Monnet <quentin@isovalent.com>
Acked-by: KP Singh <kpsingh@kernel.org>
Link: https://lore.kernel.org/bpf/20220322145012.1315376-1-milan@mdaverde.com
 2022-03-28 19:01:54 -07:00
Linus Torvalds
d717e4cae0 Networking fixes, including fixes from netfilter. 
Current release - regressions:
 
  - llc: only change llc->dev when bind() succeeds, fix null-deref
 
 Current release - new code bugs:
 
  - smc: fix a memory leak in smc_sysctl_net_exit()
 
  - dsa: realtek: make interface drivers depend on OF
 
 Previous releases - regressions:
 
  - sched: act_ct: fix ref leak when switching zones
 
 Previous releases - always broken:
 
  - netfilter: egress: report interface as outgoing
 
  - vsock/virtio: enable VQs early on probe and finish the setup
    before using them
 
 Misc:
 
  - memcg: enable accounting for nft objects
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-5.18-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
 "Including fixes from netfilter.

  Current release - regressions:

   - llc: only change llc->dev when bind() succeeds, fix null-deref

  Current release - new code bugs:

   - smc: fix a memory leak in smc_sysctl_net_exit()

   - dsa: realtek: make interface drivers depend on OF

  Previous releases - regressions:

   - sched: act_ct: fix ref leak when switching zones

  Previous releases - always broken:

   - netfilter: egress: report interface as outgoing

   - vsock/virtio: enable VQs early on probe and finish the setup before
     using them

  Misc:

   - memcg: enable accounting for nft objects"

* tag 'net-5.18-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (39 commits)
  Revert "selftests: net: Add tls config dependency for tls selftests"
  net/smc: Send out the remaining data in sndbuf before close
  net: move net_unlink_todo() out of the header
  net: dsa: bcm_sf2_cfp: fix an incorrect NULL check on list iterator
  net: bnxt_ptp: fix compilation error
  selftests: net: Add tls config dependency for tls selftests
  memcg: enable accounting for nft objects
  net/sched: act_ct: fix ref leak when switching zones
  net/smc: fix a memory leak in smc_sysctl_net_exit()
  selftests: tls: skip cmsg_to_pipe tests with TLS=n
  octeontx2-af: initialize action variable
  net: sparx5: switchdev: fix possible NULL pointer dereference
  net/x25: Fix null-ptr-deref caused by x25_disconnect
  qlcnic: dcb: default to returning -EOPNOTSUPP
  net: sparx5: depends on PTP_1588_CLOCK_OPTIONAL
  net: hns3: fix phy can not link up when autoneg off and reset
  net: hns3: add NULL pointer check for hns3_set/get_ringparam()
  net: hns3: add netdev reset check for hns3_set_tunable()
  net: hns3: clean residual vf config after disable sriov
  net: hns3: add max order judgement for tx spare buffer
  ...
 2022-03-28 17:02:04 -07:00
Jakub Kicinski
20695e9a9f Revert "selftests: net: Add tls config dependency for tls selftests" 
This reverts commit d9142e1cf3.

The test is supposed to run cleanly with TLS is disabled,
to test compatibility with TCP behavior. I can't repro
the failure [1], the problem should be debugged rather
than papered over.

Link: https://lore.kernel.org/all/20220325161203.7000698c@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com/ [1]
Fixes: d9142e1cf3 ("selftests: net: Add tls config dependency for tls selftests")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Link: https://lore.kernel.org/r/20220328212904.2685395-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2022-03-28 16:15:54 -07:00
Linus Torvalds
d111c9f034 Livepatching changes for 5.18 
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Merge tag 'livepatching-for-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching

Pull livepatching updates from Petr Mladek:

 - Forced transitions block only to-be-removed livepatches [Chengming]

 - Detect when ftrace handler could not be disabled in self-tests [David]

 - Calm down warning from a static analyzer [Tom]

* tag 'livepatching-for-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching:
  livepatch: Reorder to use before freeing a pointer
  livepatch: Don't block removal of patches that are safe to unload
  livepatch: Skip livepatch tests if ftrace cannot be configured
 2022-03-28 14:38:31 -07:00
Michael S. Tsirkin
f03560a57c tools/virtio: compile with -pthread 
When using pthreads, one has to compile and link with -lpthread,
otherwise e.g. glibc is not guaranteed to be reentrant.

This replaces -lpthread.

Reported-by: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
 2022-03-28 16:52:59 -04:00
Michael S. Tsirkin
06f05bc522 tools/virtio: fix after premapped buf support 
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
 2022-03-28 16:52:59 -04:00
Linus Torvalds
02e2af20f4 Char/Misc and other driver updates for 5.18-rc1 
Here is the big set of char/misc and other small driver subsystem
 updates for 5.18-rc1.
 
 Included in here are merges from driver subsystems which contain:
 	- iio driver updates and new drivers
 	- fsi driver updates
 	- fpga driver updates
 	- habanalabs driver updates and support for new hardware
 	- soundwire driver updates and new drivers
 	- phy driver updates and new drivers
 	- coresight driver updates
 	- icc driver updates
 
 Individual changes include:
 	- mei driver updates
 	- interconnect driver updates
 	- new PECI driver subsystem added
 	- vmci driver updates
 	- lots of tiny misc/char driver updates
 
 There will be two merge conflicts with your tree, one in MAINTAINERS
 which is obvious to fix up, and one in drivers/phy/freescale/Kconfig
 which also should be easy to resolve.
 
 All of these have been in linux-next for a while with no reported
 problems.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc and other driver updates from Greg KH:
 "Here is the big set of char/misc and other small driver subsystem
  updates for 5.18-rc1.

  Included in here are merges from driver subsystems which contain:

   - iio driver updates and new drivers

   - fsi driver updates

   - fpga driver updates

   - habanalabs driver updates and support for new hardware

   - soundwire driver updates and new drivers

   - phy driver updates and new drivers

   - coresight driver updates

   - icc driver updates

  Individual changes include:

   - mei driver updates

   - interconnect driver updates

   - new PECI driver subsystem added

   - vmci driver updates

   - lots of tiny misc/char driver updates

  All of these have been in linux-next for a while with no reported
  problems"

* tag 'char-misc-5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (556 commits)
  firmware: google: Properly state IOMEM dependency
  kgdbts: fix return value of __setup handler
  firmware: sysfb: fix platform-device leak in error path
  firmware: stratix10-svc: add missing callback parameter on RSU
  arm64: dts: qcom: add non-secure domain property to fastrpc nodes
  misc: fastrpc: Add dma handle implementation
  misc: fastrpc: Add fdlist implementation
  misc: fastrpc: Add helper function to get list and page
  misc: fastrpc: Add support to secure memory map
  dt-bindings: misc: add fastrpc domain vmid property
  misc: fastrpc: check before loading process to the DSP
  misc: fastrpc: add secure domain support
  dt-bindings: misc: add property to support non-secure DSP
  misc: fastrpc: Add support to get DSP capabilities
  misc: fastrpc: add support for FASTRPC_IOCTL_MEM_MAP/UNMAP
  misc: fastrpc: separate fastrpc device from channel context
  dt-bindings: nvmem: brcm,nvram: add basic NVMEM cells
  dt-bindings: nvmem: make "reg" property optional
  nvmem: brcm_nvram: parse NVRAM content into NVMEM cells
  nvmem: dt-bindings: Fix the error of dt-bindings check
  ...
 2022-03-28 12:27:35 -07:00
Naresh Kamboju
d9142e1cf3 selftests: net: Add tls config dependency for tls selftests 
selftest net tls test cases need TLS=m without this the test hangs.
Enabling config TLS solves this problem and runs to complete.
  - CONFIG_TLS=m

Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
Signed-off-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2022-03-28 09:00:35 -07:00
Linus Torvalds
7b58b82b86 perf tools changes for v5.18: 1st batch 
New features:
 
 perf ftrace:
 
 - Add -n/--use-nsec option to the 'latency' subcommand.
 
   Default: usecs:
 
   $ sudo perf ftrace latency -T dput -a sleep 1
   #   DURATION     |      COUNT | GRAPH                          |
        0 - 1    us |    2098375 | #############################  |
        1 - 2    us |         61 |                                |
        2 - 4    us |         33 |                                |
        4 - 8    us |         13 |                                |
        8 - 16   us |        124 |                                |
       16 - 32   us |        123 |                                |
       32 - 64   us |          1 |                                |
       64 - 128  us |          0 |                                |
      128 - 256  us |          1 |                                |
      256 - 512  us |          0 |                                |
 
   Better granularity with nsec:
 
   $ sudo perf ftrace latency -T dput -a -n sleep 1
   #   DURATION     |      COUNT | GRAPH                          |
        0 - 1    us |          0 |                                |
        1 - 2    ns |          0 |                                |
        2 - 4    ns |          0 |                                |
        4 - 8    ns |          0 |                                |
        8 - 16   ns |          0 |                                |
       16 - 32   ns |          0 |                                |
       32 - 64   ns |          0 |                                |
       64 - 128  ns |    1163434 | ##############                 |
      128 - 256  ns |     914102 | #############                  |
      256 - 512  ns |        884 |                                |
      512 - 1024 ns |        613 |                                |
        1 - 2    us |         31 |                                |
        2 - 4    us |         17 |                                |
        4 - 8    us |          7 |                                |
        8 - 16   us |        123 |                                |
       16 - 32   us |         83 |                                |
 
 perf lock:
 
 - Add -c/--combine-locks option to merge lock instances in the same class into
   a single entry.
 
   # perf lock report -c
                  Name acquired contended avg wait(ns) total wait(ns) max wait(ns) min wait(ns)
 
         rcu_read_lock   251225         0            0              0            0            0
    hrtimer_bases.lock    39450         0            0              0            0            0
   &sb->s_type->i_l...    10301         1          662            662          662          662
      ptlock_ptr(page)    10173         2          701           1402          760          642
   &(ei->i_block_re...     8732         0            0              0            0            0
          &xa->xa_lock     8088         0            0              0            0            0
           &base->lock     6705         0            0              0            0            0
           &p->pi_lock     5549         0            0              0            0            0
   &dentry->d_lockr...     5010         4         1274           5097         1844          789
             &ep->lock     3958         0            0              0            0            0
 
 - Add -F/--field option to customize the list of fields to output:
 
   $ perf lock report -F contended,wait_max -k avg_wait
                   Name contended max wait(ns) avg wait(ns)
 
         slock-AF_INET6         1        23543        23543
      &lruvec->lru_lock         5        18317        11254
         slock-AF_INET6         1        10379        10379
             rcu_node_1         1         2104         2104
    &dentry->d_lockr...         1         1844         1844
    &dentry->d_lockr...         1         1672         1672
       &newf->file_lock        15         2279         1025
    &dentry->d_lockr...         1          792          792
 
 - Add --synth=no option for record, as there is no need to symbolize,
   lock names comes from the tracepoints.
 
 perf record:
 
 - Threaded recording, opt-in, via the new --threads command line option.
 
 - Improve AMD IBS (Instruction-Based Sampling) error handling messages.
 
 perf script:
 
 - Add 'brstackinsnlen' field (use it with -F) for branch stacks.
 
 - Output branch sample type in 'perf script'.
 
 perf report:
 
 - Add "addr_from" and "addr_to" sort dimensions.
 
 - Print branch stack entry type in 'perf report --dump-raw-trace'
 
 - Fix symbolization for chrooted workloads.
 
 Hardware tracing:
 
 Intel PT:
 
 - Add CFE (Control Flow Event) and EVD (Event Data) packets support.
 
 - Add MODE.Exec IFLAG bit support.
 
 Explanation about these features from the "Intel® 64 and IA-32 architectures
 software developer’s manual combined volumes: 1, 2A, 2B, 2C, 2D, 3A, 3B, 3C,
 3D, and 4" PDF at:
 
   https://cdrdv2.intel.com/v1/dl/getContent/671200
 
 At page 3951:
 
 <quote>
 32.2.4
 
 Event Trace is a capability that exposes details about the asynchronous
 events, when they are generated, and when their corresponding software
 event handler completes execution. These include:
 
 o Interrupts, including NMI and SMI, including the interrupt vector when
 defined.
 
 o Faults, exceptions including the fault vector.
 
 — Page faults additionally include the page fault address, when in context.
 
 o Event handler returns, including IRET and RSM.
 
 o VM exits and VM entries.¹
 
 — VM exits include the values written to the “exit reason” and “exit qualification” VMCS fields.
 INIT and SIPI events.
 
 o TSX aborts, including the abort status returned for the RTM instructions.
 
 o Shutdown.
 
 Additionally, it provides indication of the status of the Interrupt Flag
 (IF), to indicate when interrupts are masked.
 </quote>
 
 ARM CoreSight:
 
 - Use advertised caps/min_interval as default sample_period on ARM spe.
 
 - Update deduction of TRCCONFIGR register for branch broadcast on ARM's CoreSight ETM.
 
 Vendor Events (JSON):
 
 Intel:
 
 - Update events and metrics for:
 
     Alderlake, Broadwell, Broadwell DE, BroadwellX, CascadelakeX, Elkhartlake,
     Bonnell, Goldmont, GoldmontPlus, Westmere EP-DP, Haswell, HaswellX,
     Icelake, IcelakeX, Ivybridge, Ivytown, Jaketown, Knights Landing,
     Nehalem EP, Sandybridge, Silvermont, Skylake, Skylake Server, SkylakeX,
     Tigerlake, TremontX, Westmere EP-SP, Westmere EX.
 
 ARM:
 
 - Add support for HiSilicon CPA PMU aliasing.
 
 perf stat:
 
 - Fix forked applications enablement of counters.
 
 - The 'slots' should only be printed on a different order than the one specified
   on the command line when 'topdown' events are present, fix it.
 
 Miscellaneous:
 
 - Sync msr-index, cpufeatures header files with the kernel sources.
 
 - Stop using some deprecated libbpf APIs in 'perf trace'.
 
 - Fix some spelling mistakes.
 
 - Refactor the maps pointers usage to pave the way for using refcount debugging.
 
 - Only offer the --tui option on perf top, report and annotate when perf was
   built with libslang.
 
 - Don't mention --to-ctf in 'perf data --help' when not linking with the required
   library, libbabeltrace.
 
 - Use ARRAY_SIZE() instead of ad hoc equivalent, spotted by array_size.cocci.
 
 - Enhance the matching of sub-commands abbreviations:
 	'perf c2c rec' -> 'perf c2c record'
 	'perf c2c recport -> error
 
 - Set build-id using build-id header on new mmap records.
 
 - Fix generation of 'perf --version' string.
 
 perf test:
 
 - Add test for the arm_spe event.
 
 - Add test to check unwinding using fame-pointer (fp) mode on arm64.
 
 - Make metric testing more robust in 'perf test'.
 
 - Add error message for unsupported branch stack cases.
 
 libperf:
 
 - Add API for allocating new thread map array.
 
 - Fix typo in perf_evlist__open() failure error messages in libperf tests.
 
 perf c2c:
 
 - Replace bitmap_weight() with bitmap_empty() where appropriate.
 
 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-tools-for-v5.18-2022-03-26' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

Pull perf tools updates from Arnaldo Carvalho de Melo:
 "New features:

  perf ftrace:

   - Add -n/--use-nsec option to the 'latency' subcommand.

     Default: usecs:

     $ sudo perf ftrace latency -T dput -a sleep 1
     #   DURATION     |      COUNT | GRAPH                          |
          0 - 1    us |    2098375 | #############################  |
          1 - 2    us |         61 |                                |
          2 - 4    us |         33 |                                |
          4 - 8    us |         13 |                                |
          8 - 16   us |        124 |                                |
         16 - 32   us |        123 |                                |
         32 - 64   us |          1 |                                |
         64 - 128  us |          0 |                                |
        128 - 256  us |          1 |                                |
        256 - 512  us |          0 |                                |

     Better granularity with nsec:

     $ sudo perf ftrace latency -T dput -a -n sleep 1
     #   DURATION     |      COUNT | GRAPH                          |
          0 - 1    us |          0 |                                |
          1 - 2    ns |          0 |                                |
          2 - 4    ns |          0 |                                |
          4 - 8    ns |          0 |                                |
          8 - 16   ns |          0 |                                |
         16 - 32   ns |          0 |                                |
         32 - 64   ns |          0 |                                |
         64 - 128  ns |    1163434 | ##############                 |
        128 - 256  ns |     914102 | #############                  |
        256 - 512  ns |        884 |                                |
        512 - 1024 ns |        613 |                                |
          1 - 2    us |         31 |                                |
          2 - 4    us |         17 |                                |
          4 - 8    us |          7 |                                |
          8 - 16   us |        123 |                                |
         16 - 32   us |         83 |                                |

  perf lock:

   - Add -c/--combine-locks option to merge lock instances in the same
     class into a single entry.

     # perf lock report -c
                    Name acquired contended avg wait(ns) total wait(ns) max wait(ns) min wait(ns)

           rcu_read_lock   251225         0            0              0            0            0
      hrtimer_bases.lock    39450         0            0              0            0            0
     &sb->s_type->i_l...    10301         1          662            662          662          662
        ptlock_ptr(page)    10173         2          701           1402          760          642
     &(ei->i_block_re...     8732         0            0              0            0            0
            &xa->xa_lock     8088         0            0              0            0            0
             &base->lock     6705         0            0              0            0            0
             &p->pi_lock     5549         0            0              0            0            0
     &dentry->d_lockr...     5010         4         1274           5097         1844          789
               &ep->lock     3958         0            0              0            0            0

      - Add -F/--field option to customize the list of fields to output:

     $ perf lock report -F contended,wait_max -k avg_wait
                     Name contended max wait(ns) avg wait(ns)

           slock-AF_INET6         1        23543        23543
        &lruvec->lru_lock         5        18317        11254
           slock-AF_INET6         1        10379        10379
               rcu_node_1         1         2104         2104
      &dentry->d_lockr...         1         1844         1844
      &dentry->d_lockr...         1         1672         1672
         &newf->file_lock        15         2279         1025
      &dentry->d_lockr...         1          792          792

   - Add --synth=no option for record, as there is no need to symbolize,
     lock names comes from the tracepoints.

  perf record:

   - Threaded recording, opt-in, via the new --threads command line
     option.

   - Improve AMD IBS (Instruction-Based Sampling) error handling
     messages.

  perf script:

   - Add 'brstackinsnlen' field (use it with -F) for branch stacks.

   - Output branch sample type in 'perf script'.

  perf report:

   - Add "addr_from" and "addr_to" sort dimensions.

   - Print branch stack entry type in 'perf report --dump-raw-trace'

   - Fix symbolization for chrooted workloads.

  Hardware tracing:

  Intel PT:

   - Add CFE (Control Flow Event) and EVD (Event Data) packets support.

   - Add MODE.Exec IFLAG bit support.

     Explanation about these features from the "Intel® 64 and IA-32
     architectures software developer’s manual combined volumes: 1, 2A,
     2B, 2C, 2D, 3A, 3B, 3C, 3D, and 4" PDF at:

        https://cdrdv2.intel.com/v1/dl/getContent/671200

     At page 3951:
      "32.2.4

       Event Trace is a capability that exposes details about the
       asynchronous events, when they are generated, and when their
       corresponding software event handler completes execution. These
       include:

        o Interrupts, including NMI and SMI, including the interrupt
          vector when defined.

        o Faults, exceptions including the fault vector.

           - Page faults additionally include the page fault address,
             when in context.

        o Event handler returns, including IRET and RSM.

        o VM exits and VM entries.¹

           - VM exits include the values written to the “exit reason”
             and “exit qualification” VMCS fields. INIT and SIPI events.

        o TSX aborts, including the abort status returned for the RTM
          instructions.

        o Shutdown.

       Additionally, it provides indication of the status of the
       Interrupt Flag (IF), to indicate when interrupts are masked"

  ARM CoreSight:

   - Use advertised caps/min_interval as default sample_period on ARM
     spe.

   - Update deduction of TRCCONFIGR register for branch broadcast on
     ARM's CoreSight ETM.

  Vendor Events (JSON):

  Intel:

   - Update events and metrics for: Alderlake, Broadwell, Broadwell DE,
     BroadwellX, CascadelakeX, Elkhartlake, Bonnell, Goldmont,
     GoldmontPlus, Westmere EP-DP, Haswell, HaswellX, Icelake, IcelakeX,
     Ivybridge, Ivytown, Jaketown, Knights Landing, Nehalem EP,
     Sandybridge, Silvermont, Skylake, Skylake Server, SkylakeX,
     Tigerlake, TremontX, Westmere EP-SP, and Westmere EX.

  ARM:

   - Add support for HiSilicon CPA PMU aliasing.

  perf stat:

   - Fix forked applications enablement of counters.

   - The 'slots' should only be printed on a different order than the
     one specified on the command line when 'topdown' events are
     present, fix it.

  Miscellaneous:

   - Sync msr-index, cpufeatures header files with the kernel sources.

   - Stop using some deprecated libbpf APIs in 'perf trace'.

   - Fix some spelling mistakes.

   - Refactor the maps pointers usage to pave the way for using refcount
     debugging.

   - Only offer the --tui option on perf top, report and annotate when
     perf was built with libslang.

   - Don't mention --to-ctf in 'perf data --help' when not linking with
     the required library, libbabeltrace.

   - Use ARRAY_SIZE() instead of ad hoc equivalent, spotted by
     array_size.cocci.

   - Enhance the matching of sub-commands abbreviations:
	'perf c2c rec' -> 'perf c2c record'
	'perf c2c recport -> error

   - Set build-id using build-id header on new mmap records.

   - Fix generation of 'perf --version' string.

  perf test:

   - Add test for the arm_spe event.

   - Add test to check unwinding using fame-pointer (fp) mode on arm64.

   - Make metric testing more robust in 'perf test'.

   - Add error message for unsupported branch stack cases.

  libperf:

   - Add API for allocating new thread map array.

   - Fix typo in perf_evlist__open() failure error messages in libperf
     tests.

  perf c2c:

   - Replace bitmap_weight() with bitmap_empty() where appropriate"

* tag 'perf-tools-for-v5.18-2022-03-26' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: (143 commits)
  perf evsel: Improve AMD IBS (Instruction-Based Sampling) error handling messages
  perf python: Add perf_env stubs that will be needed in evsel__open_strerror()
  perf tools: Enhance the matching of sub-commands abbreviations
  libperf tests: Fix typo in perf_evlist__open() failure error messages
  tools arm64: Import cputype.h
  perf lock: Add -F/--field option to control output
  perf lock: Extend struct lock_key to have print function
  perf lock: Add --synth=no option for record
  tools headers cpufeatures: Sync with the kernel sources
  tools headers cpufeatures: Sync with the kernel sources
  perf stat: Fix forked applications enablement of counters
  tools arch x86: Sync the msr-index.h copy with the kernel sources
  perf evsel: Make evsel__env() always return a valid env
  perf build-id: Fix spelling mistake "Cant" -> "Can't"
  perf header: Fix spelling mistake "could't" -> "couldn't"
  perf script: Add 'brstackinsnlen' for branch stacks
  perf parse-events: Move slots only with topdown
  perf ftrace latency: Update documentation
  perf ftrace latency: Add -n/--use-nsec option
  perf tools: Fix version kernel tag
  ...
 2022-03-27 13:42:32 -07:00
Linus Torvalds
02f9a04d76 memblock: test suite and a small cleanup 
* A small cleanup of unused variable in __next_mem_pfn_range_in_zone
 * Initial test suite to simulate memblock behaviour in userspace
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Merge tag 'memblock-v5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock

Pull memblock updates from Mike Rapoport:
 "Test suite and a small cleanup:

   - A small cleanup of unused variable in __next_mem_pfn_range_in_zone

   - Initial test suite to simulate memblock behaviour in userspace"

* tag 'memblock-v5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock: (27 commits)
  memblock tests: Add TODO and README files
  memblock tests: Add memblock_alloc_try_nid tests for bottom up
  memblock tests: Add memblock_alloc_try_nid tests for top down
  memblock tests: Add memblock_alloc_from tests for bottom up
  memblock tests: Add memblock_alloc_from tests for top down
  memblock tests: Add memblock_alloc tests for bottom up
  memblock tests: Add memblock_alloc tests for top down
  memblock tests: Add simulation of physical memory
  memblock tests: Split up reset_memblock function
  memblock tests: Fix testing with 32-bit physical addresses
  memblock: __next_mem_pfn_range_in_zone: remove unneeded local variable nid
  memblock tests: Add memblock_free tests
  memblock tests: Add memblock_add_node test
  memblock tests: Add memblock_remove tests
  memblock tests: Add memblock_reserve tests
  memblock tests: Add memblock_add tests
  memblock tests: Add memblock reset function
  memblock tests: Add skeleton of the memblock simulator
  tools/include: Add debugfs.h stub
  tools/include: Add pfn.h stub
  ...
 2022-03-27 13:36:06 -07:00
Linus Torvalds
7001052160 Add support for Intel CET-IBT, available since Tigerlake (11th gen), which is a 
coarse grained, hardware based, forward edge Control-Flow-Integrity mechanism
 where any indirect CALL/JMP must target an ENDBR instruction or suffer #CP.
 
 Additionally, since Alderlake (12th gen)/Sapphire-Rapids, speculation is
 limited to 2 instructions (and typically fewer) on branch targets not starting
 with ENDBR. CET-IBT also limits speculation of the next sequential instruction
 after the indirect CALL/JMP [1].
 
 CET-IBT is fundamentally incompatible with retpolines, but provides, as
 described above, speculation limits itself.
 
 [1] https://www.intel.com/content/www/us/en/developer/articles/technical/software-security-guidance/technical-documentation/branch-history-injection.html
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Merge tag 'x86_core_for_5.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 CET-IBT (Control-Flow-Integrity) support from Peter Zijlstra:
 "Add support for Intel CET-IBT, available since Tigerlake (11th gen),
  which is a coarse grained, hardware based, forward edge
  Control-Flow-Integrity mechanism where any indirect CALL/JMP must
  target an ENDBR instruction or suffer #CP.

  Additionally, since Alderlake (12th gen)/Sapphire-Rapids, speculation
  is limited to 2 instructions (and typically fewer) on branch targets
  not starting with ENDBR. CET-IBT also limits speculation of the next
  sequential instruction after the indirect CALL/JMP [1].

  CET-IBT is fundamentally incompatible with retpolines, but provides,
  as described above, speculation limits itself"

[1] https://www.intel.com/content/www/us/en/developer/articles/technical/software-security-guidance/technical-documentation/branch-history-injection.html

* tag 'x86_core_for_5.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (53 commits)
  kvm/emulate: Fix SETcc emulation for ENDBR
  x86/Kconfig: Only allow CONFIG_X86_KERNEL_IBT with ld.lld >= 14.0.0
  x86/Kconfig: Only enable CONFIG_CC_HAS_IBT for clang >= 14.0.0
  kbuild: Fixup the IBT kbuild changes
  x86/Kconfig: Do not allow CONFIG_X86_X32_ABI=y with llvm-objcopy
  x86: Remove toolchain check for X32 ABI capability
  x86/alternative: Use .ibt_endbr_seal to seal indirect calls
  objtool: Find unused ENDBR instructions
  objtool: Validate IBT assumptions
  objtool: Add IBT/ENDBR decoding
  objtool: Read the NOENDBR annotation
  x86: Annotate idtentry_df()
  x86,objtool: Move the ASM_REACHABLE annotation to objtool.h
  x86: Annotate call_on_stack()
  objtool: Rework ASM_REACHABLE
  x86: Mark __invalid_creds() __noreturn
  exit: Mark do_group_exit() __noreturn
  x86: Mark stop_this_cpu() __noreturn
  objtool: Ignore extra-symbol code
  objtool: Rename --duplicate to --lto
  ...
 2022-03-27 10:17:23 -07:00
Jakub Kicinski
5c7e49be96 selftests: tls: skip cmsg_to_pipe tests with TLS=n 
These are negative tests, testing TLS code rejects certain
operations. They won't pass without TLS enabled, pure TCP
accepts those operations.

Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
Fixes: d87d67fd61 ("selftests: tls: test splicing cmsgs")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2022-03-26 14:15:16 -07:00
Kim Phillips
ab0809af0b perf evsel: Improve AMD IBS (Instruction-Based Sampling) error handling messages 
Improve the error message returned on failed perf_event_open() on AMD
systems when using IBS (Instruction-Based Sampling).

Output of executing 'perf record -e ibs_op// true' as a non root user
BEFORE this patch (perf will add the 'u' modifier at the end to exclude
kernel/hypervisor sampling):

  The sys_perf_event_open() syscall returned with 22 (Invalid argument)for event (ibs_op//u).
  /bin/dmesg | grep -i perf may provide additional information.

Output after:

  AMD IBS can't exclude kernel events.  Try running at a higher privilege level.

Output of executing 'sudo perf record -e ibs_op// true' BEFORE this patch:

  Error:
  The sys_perf_event_open() syscall returned with 22 (Invalid argument) for event (ibs_op//).
  /bin/dmesg | grep -i perf may provide additional information.

Output after:

  Error:
  Invalid event (ibs_op//) in per-thread mode, enable system wide with '-a'.

Folowing the suggestion:

  $ sudo perf record -a -e ibs_op// true
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 1.664 MB perf.data (194 samples) ]
  $

Signed-off-by: Kim Phillips <kim.phillips@amd.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: João Martins <joao.m.martins@oracle.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rafael J. Wysocki <rafael@kernel.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Robert Richter <robert.richter@amd.com>
Cc: Sandipan Das <sandipan.das@amd.com>
Cc: Song Liu <songliubraving@fb.com>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20220322221517.2510440-12-eranian@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2022-03-26 10:55:58 -03:00
Arnaldo Carvalho de Melo
b58230de3c perf python: Add perf_env stubs that will be needed in evsel__open_strerror() 
The AMD IBS error message enhancements will use these, but we're not
using evsel__open_strerror() in the python binding so far.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2022-03-26 10:55:57 -03:00
Wei Li
ae0f4eb34f perf tools: Enhance the matching of sub-commands abbreviations 
We support short command 'rec*' for 'record' and 'rep*' for 'report' in
lots of sub-commands, but the matching is not quite strict currnetly.

It may be puzzling sometime, like we mis-type a 'recport' to report but
it will perform 'record' in fact without any message.

To fix this, add a check to ensure that the short cmd is valid prefix
of the real command.

Committer testing:

  [root@quaco ~]# perf c2c re sleep 1

   Usage: perf c2c {record|report}

      -v, --verbose         be more verbose (show counter open errors, etc)

  # perf c2c rec sleep 1
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 0.038 MB perf.data (16 samples) ]
  # perf c2c recport sleep 1

   Usage: perf c2c {record|report}

      -v, --verbose         be more verbose (show counter open errors, etc)

  # perf c2c record sleep 1
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 0.038 MB perf.data (15 samples) ]
  # perf c2c records sleep 1

   Usage: perf c2c {record|report}

      -v, --verbose         be more verbose (show counter open errors, etc)

  #

Signed-off-by: Wei Li <liwei391@huawei.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Hanjun Guo <guohanjun@huawei.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Rui Xiang <rui.xiang@huawei.com>
Link: http://lore.kernel.org/lkml/20220325092032.2956161-1-liwei391@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2022-03-26 10:55:57 -03:00
Shunsuke Nakamura
c2eeac9856 libperf tests: Fix typo in perf_evlist__open() failure error messages 
This patch corrects typos in error messages. I should be "evlist", not
"evsel" as the function that fails is perf_evlist__open().

Fixes: 3ce311afb5 ("libperf: Move to tools/lib/perf")
Fixes: a7f3713f6b ("libperf tests: Add test_stat_multiplexing test")
Signed-off-by: Shunsuke Nakamura <nakamura.shun@fujitsu.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20220325043829.224045-2-nakamura.shun@fujitsu.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2022-03-26 10:55:57 -03:00
Ali Saidi
1314376d49 tools arm64: Import cputype.h 
Bring-in the kernel's arch/arm64/include/asm/cputype.h into tools/
for arm64 to make use of all the core-type definitions in perf.

Replace sysreg.h with the version already imported into tools/.

Committer notes:

Added an entry to tools/perf/check-headers.sh, so that we get notified
when the original file in the kernel sources gets modified.

Tester notes:

LGTM. I did the testing on both my x86 and Arm64 platforms, thanks for
the fixing up.

Signed-off-by: Ali Saidi <alisaidi@amazon.com>
Tested-by: Leo Yan <leo.yan@linaro.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andrew Kilroy <andrew.kilroy@arm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: German Gomez <german.gomez@arm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Li Huafei <lihuafei1@huawei.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Nick.Forrington@arm.com
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Will Deacon <will@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Link: https://lore.kernel.org/r/20220324183323.31414-2-alisaidi@amazon.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2022-03-26 10:53:45 -03:00
Ido Schimmel
b50d3b46f8 selftests: test_vxlan_under_vrf: Fix broken test case 
The purpose of the last test case is to test VXLAN encapsulation and
decapsulation when the underlay lookup takes place in a non-default VRF.
This is achieved by enslaving the physical device of the tunnel to a
VRF.

The binding of the VXLAN UDP socket to the VRF happens when the VXLAN
device itself is opened, not when its physical device is opened. This
was also mentioned in the cited commit ("tests that moving the underlay
from a VRF to another works when down/up the VXLAN interface"), but the
test did something else.

Fix it by reopening the VXLAN device instead of its physical device.

Before:

 # ./test_vxlan_under_vrf.sh
 Checking HV connectivity                                           [ OK ]
 Check VM connectivity through VXLAN (underlay in the default VRF)  [ OK ]
 Check VM connectivity through VXLAN (underlay in a VRF)            [FAIL]

After:

 # ./test_vxlan_under_vrf.sh
 Checking HV connectivity                                           [ OK ]
 Check VM connectivity through VXLAN (underlay in the default VRF)  [ OK ]
 Check VM connectivity through VXLAN (underlay in a VRF)            [ OK ]

Fixes: 03f1c26b1c ("test/net: Add script for VXLAN underlay in a VRF")
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/20220324200514.1638326-1-idosch@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2022-03-25 17:00:11 -07:00
Linus Torvalds
1464677662 platform-drivers-x86 for v5.18-1 
Highlights:
 - new drivers:
   - AMD Host System Management Port (HSMP)
   - Intel Software Defined Silicon
 - removed drivers (functionality folded into other drivers):
   - intel_cht_int33fe_microb
   - surface3_button
 - amd-pmc:
   - s2idle bug-fixes
   - Support for AMD Spill to DRAM STB feature
 - hp-wmi:
   - Fix SW_TABLET_MODE detection method (and other fixes)
   - Support omen thermal profile policy v1
 - serial-multi-instantiate:
   - Add SPI device support
   - Add support for CS35L41 amplifiers used in new laptops
 - think-lmi:
   - syfs-class-firmware-attributes Certificate authentication support
 - thinkpad_acpi:
   - Fixes + quirks
   - Add platform_profile support on AMD based ThinkPads
 - x86-android-tablets
   - Improve Asus ME176C / TF103C support
   - Support Nextbook Ares 8, Lenovo Tab 2 830 and 1050 tablets
 - Lots of various other small fixes and hardware-id additions
 
 The following is an automated git shortlog grouped by driver:
 
 ACPI / scan:
  -  Create platform device for CS35L41
 
 ACPI / x86:
  -  Add support for LPS0 callback handler
 
 ALSA:
  -  hda/realtek: Add support for HP Laptops
 
 Add AMD system management interface:
  - Add AMD system management interface
 
 Add Intel Software Defined Silicon driver:
  - Add Intel Software Defined Silicon driver
 
 Documentation:
  -  syfs-class-firmware-attributes: Lenovo Certificate support
  -  Add x86/amd_hsmp driver
 
 ISST:
  -  Fix possible circular locking dependency detected
 
 Input:
  -  soc_button_array - add support for Microsoft Surface 3 (MSHW0028) buttons
 
 Merge remote-tracking branch 'pdx86/platform-drivers-x86-pinctrl-pmu_clk' into review-hans-gcc12:
  - Merge remote-tracking branch 'pdx86/platform-drivers-x86-pinctrl-pmu_clk' into review-hans-gcc12
 
 Merge tag 'platform-drivers-x86-serial-multi-instantiate-1' into review-hans:
  - Merge tag 'platform-drivers-x86-serial-multi-instantiate-1' into review-hans
 
 Replace acpi_bus_get_device():
  - Replace acpi_bus_get_device()
 
 amd-pmc:
  -  Only report STB errors when STB enabled
  -  Drop CPU QoS workaround
  -  Output error codes in messages
  -  Move to later in the suspend process
  -  Validate entry into the deepest state on resume
  -  uninitialized variable in amd_pmc_s2d_init()
  -  Set QOS during suspend on CZN w/ timer wakeup
  -  Add support for AMD Spill to DRAM STB feature
  -  Correct usage of SMU version
  -  Make amd_pmc_stb_debugfs_fops static
 
 asus-tf103c-dock:
  -  Make 2 global structs static
 
 asus-wmi:
  -  Fix regression when probing for fan curve control
 
 hp-wmi:
  -  support omen thermal profile policy v1
  -  Changing bios_args.data to be dynamically allocated
  -  Fix 0x05 error code reported by several WMI calls
  -  Fix SW_TABLET_MODE detection method
  -  Fix hp_wmi_read_int() reporting error (0x05)
 
 huawei-wmi:
  -  check the return value of device_create_file()
 
 i2c-multi-instantiate:
  -  Rename it for a generic serial driver name
 
 int3472:
  -  Add terminator to gpiod_lookup_table
 
 intel-uncore-freq:
  -  fix uncore_freq_common_init() error codes
 
 intel_cht_int33fe:
  -  Move to intel directory
  -  Drop Lenovo Yogabook YB1-X9x code
  -  Switch to DMI modalias based loading
 
 intel_crystal_cove_charger:
  -  Fix IRQ masking / unmasking
 
 lg-laptop:
  -  Move setting of battery charge limit to common location
 
 pinctrl:
  -  baytrail: Add pinconf group + function for the pmu_clk
 
 platform/dcdbas:
  -  move EXPORT_SYMBOL after function
 
 platform/surface:
  -  Remove Surface 3 Button driver
  -  surface3-wmi: Simplify resource management
  -  Replace acpi_bus_get_device()
  -  Reinstate platform dependency
 
 platform/x86/intel-uncore-freq:
  -  Split common and enumeration part
 
 platform/x86/intel/uncore-freq:
  -  Display uncore current frequency
  -  Use sysfs API to create attributes
  -  Move to uncore-frequency folder
 
 selftests:
  -  sdsi: test sysfs setup
 
 serial-multi-instantiate:
  -  Add SPI support
  -  Reorganize I2C functions
 
 spi:
  -  Add API to count spi acpi resources
  -  Support selection of the index of the ACPI Spi Resource before alloc
  -  Create helper API to lookup ACPI info for spi device
  -  Make spi_alloc_device and spi_add_device public again
 
 surface:
  -  surface3_power: Fix battery readings on batteries without a serial number
 
 think-lmi:
  -  Certificate authentication support
 
 thinkpad_acpi:
  -  consistently check fan_get_status return.
  -  Don't use test_bit on an integer
  -  Fix compiler warning about uninitialized err variable
  -  clean up dytc profile convert
  -  Add PSC mode support
  -  Add dual fan probe
  -  Add dual-fan quirk for T15g (2nd gen)
  -  Fix incorrect use of platform profile on AMD platforms
  -  Add quirk for ThinkPads without a fan
 
 tools arch x86:
  -  Add Intel SDSi provisiong tool
 
 touchscreen_dmi:
  -  Add info for the RWC NANOTE P8 AY07J 2-in-1
 
 x86-android-tablets:
  -  Depend on EFI and SPI
  -  Lenovo Yoga Tablet 2 830/1050 sound support
  -  Workaround Lenovo Yoga Tablet 2 830/1050 poweroff hang
  -  Add Lenovo Yoga Tablet 2 830 / 1050 data
  -  Fix EBUSY error when requesting IOAPIC IRQs
  -  Minor charger / fuel-gauge improvements
  -  Add Nextbook Ares 8 data
  -  Add IRQ to Asus ME176C accelerometer info
  -  Add lid-switch gpio-keys pdev to Asus ME176C + TF103C
  -  Add x86_android_tablet_get_gpiod() helper
  -  Add Asus ME176C/TF103C charger and fuelgauge props
  -  Add battery swnode support
  -  Trivial typo fix for MODULE_AUTHOR
  -  Fix the buttons on CZC P10T tablet
  -  Constify the gpiod_lookup_tables arrays
  -  Add an init() callback to struct x86_dev_info
  -  Add support for disabling ACPI _AEI handlers
  -  Correct crystal_cove_charger module name
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Merge tag 'platform-drivers-x86-v5.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86

Pull x86 platform driver updates from Hans de Goede:
  "New drivers:
    - AMD Host System Management Port (HSMP)
    - Intel Software Defined Silicon

  Removed drivers (functionality folded into other drivers):
    - intel_cht_int33fe_microb
    - surface3_button

  amd-pmc:
    - s2idle bug-fixes
    - Support for AMD Spill to DRAM STB feature

  hp-wmi:
    - Fix SW_TABLET_MODE detection method (and other fixes)
    - Support omen thermal profile policy v1

  serial-multi-instantiate:
    - Add SPI device support
    - Add support for CS35L41 amplifiers used in new laptops

  think-lmi:
    - syfs-class-firmware-attributes Certificate authentication support

  thinkpad_acpi:
    - Fixes + quirks
    - Add platform_profile support on AMD based ThinkPads

  x86-android-tablets:
    - Improve Asus ME176C / TF103C support
    - Support Nextbook Ares 8, Lenovo Tab 2 830 and 1050 tablets

  Lots of various other small fixes and hardware-id additions"

* tag 'platform-drivers-x86-v5.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (60 commits)
  platform/x86: think-lmi: Certificate authentication support
  Documentation: syfs-class-firmware-attributes: Lenovo Certificate support
  platform/x86: amd-pmc: Only report STB errors when STB enabled
  platform/x86: amd-pmc: Drop CPU QoS workaround
  platform/x86: amd-pmc: Output error codes in messages
  platform/x86: amd-pmc: Move to later in the suspend process
  ACPI / x86: Add support for LPS0 callback handler
  platform/x86: thinkpad_acpi: consistently check fan_get_status return.
  platform/x86: hp-wmi: support omen thermal profile policy v1
  platform/x86: hp-wmi: Changing bios_args.data to be dynamically allocated
  platform/x86: hp-wmi: Fix 0x05 error code reported by several WMI calls
  platform/x86: hp-wmi: Fix SW_TABLET_MODE detection method
  platform/x86: hp-wmi: Fix hp_wmi_read_int() reporting error (0x05)
  platform/x86: amd-pmc: Validate entry into the deepest state on resume
  platform/x86: thinkpad_acpi: Don't use test_bit on an integer
  platform/x86: thinkpad_acpi: Fix compiler warning about uninitialized err variable
  platform/x86: thinkpad_acpi: clean up dytc profile convert
  platform/x86: x86-android-tablets: Depend on EFI and SPI
  platform/x86: amd-pmc: uninitialized variable in amd_pmc_s2d_init()
  platform/x86: intel-uncore-freq: fix uncore_freq_common_init() error codes
  ...
 2022-03-25 12:14:39 -07:00
Namhyung Kim
4bd9cab59f perf lock: Add -F/--field option to control output 
The -F/--field option is to customize the list of fields to output:

  $ perf lock report -F contended,wait_max -k avg_wait
                  Name  contended   max wait (ns)   avg wait (ns)

        slock-AF_INET6          1           23543           23543
     &lruvec->lru_lock          5           18317           11254
        slock-AF_INET6          1           10379           10379
            rcu_node_1          1            2104            2104
   &dentry->d_lockr...          1            1844            1844
   &dentry->d_lockr...          1            1672            1672
      &newf->file_lock         15            2279            1025
   &dentry->d_lockr...          1             792             792

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220323230259.288494-3-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2022-03-25 15:24:50 -03:00
Namhyung Kim
64999e4402 perf lock: Extend struct lock_key to have print function 
And use it to print output for each key field.  No functional change
intended and the output should be identical.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220323230259.288494-2-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2022-03-25 15:24:16 -03:00
Namhyung Kim
67b61f59a6 perf lock: Add --synth=no option for record 
The perf lock command has nothing to symbolize and lock names come
from the tracepoint.  Moreover, kernel symbols are available even the
--synth=no option is given.

This will reduce the startup time by avoiding unnecessary synthesis.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220323230259.288494-1-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2022-03-25 15:24:03 -03:00
Linus Torvalds
29c8c18363 Merge branch 'akpm' (patches from Andrew) 
Merge yet more updates from Andrew Morton:
 "This is the material which was staged after willystuff in linux-next.

  Subsystems affected by this patch series: mm (debug, selftests,
  pagecache, thp, rmap, migration, kasan, hugetlb, pagemap, madvise),
  and selftests"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (113 commits)
  selftests: kselftest framework: provide "finished" helper
  mm: madvise: MADV_DONTNEED_LOCKED
  mm: fix race between MADV_FREE reclaim and blkdev direct IO read
  mm: generalize ARCH_HAS_FILTER_PGPROT
  mm: unmap_mapping_range_tree() with i_mmap_rwsem shared
  mm: warn on deleting redirtied only if accounted
  mm/huge_memory: remove stale locking logic from __split_huge_pmd()
  mm/huge_memory: remove stale page_trans_huge_mapcount()
  mm/swapfile: remove stale reuse_swap_page()
  mm/khugepaged: remove reuse_swap_page() usage
  mm/huge_memory: streamline COW logic in do_huge_pmd_wp_page()
  mm: streamline COW logic in do_swap_page()
  mm: slightly clarify KSM logic in do_swap_page()
  mm: optimize do_wp_page() for fresh pages in local LRU pagevecs
  mm: optimize do_wp_page() for exclusive pages in the swapcache
  mm/huge_memory: make is_transparent_hugepage() static
  userfaultfd/selftests: enable hugetlb remap and remove event testing
  selftests/vm: add hugetlb madvise MADV_DONTNEED MADV_REMOVE test
  mm: enable MADV_DONTNEED for hugetlb mappings
  kasan: disable LOCKDEP when printing reports
  ...
 2022-03-25 10:21:20 -07:00
Linus Torvalds
aa5b537b0e RISC-V Patches for the 5.18 Merge Window, Part 1 
* Support for Sv57-based virtual memory.
 * Various improvements for the MicroChip PolarFire SOC and the
   associated Icicle dev board, which should allow upstream kernels to
   boot without any additional modifications.
 * An improved memmove() implementation.
 * Support for the new Ssconfpmf and SBI PMU extensions, which allows for
   a much more useful perf implementation on RISC-V systems.
 * Support for restartable sequences.
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Merge tag 'riscv-for-linus-5.18-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

Pull RISC-V updates from Palmer Dabbelt:

 - Support for Sv57-based virtual memory.

 - Various improvements for the MicroChip PolarFire SOC and the
   associated Icicle dev board, which should allow upstream kernels to
   boot without any additional modifications.

 - An improved memmove() implementation.

 - Support for the new Ssconfpmf and SBI PMU extensions, which allows
   for a much more useful perf implementation on RISC-V systems.

 - Support for restartable sequences.

* tag 'riscv-for-linus-5.18-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (36 commits)
  rseq/selftests: Add support for RISC-V
  RISC-V: Add support for restartable sequence
  MAINTAINERS: Add entry for RISC-V PMU drivers
  Documentation: riscv: Remove the old documentation
  RISC-V: Add sscofpmf extension support
  RISC-V: Add perf platform driver based on SBI PMU extension
  RISC-V: Add RISC-V SBI PMU extension definitions
  RISC-V: Add a simple platform driver for RISC-V legacy perf
  RISC-V: Add a perf core library for pmu drivers
  RISC-V: Add CSR encodings for all HPMCOUNTERS
  RISC-V: Remove the current perf implementation
  RISC-V: Improve /proc/cpuinfo output for ISA extensions
  RISC-V: Do no continue isa string parsing without correct XLEN
  RISC-V: Implement multi-letter ISA extension probing framework
  RISC-V: Extract multi-letter extension names from "riscv, isa"
  RISC-V: Minimal parser for "riscv, isa" strings
  RISC-V: Correctly print supported extensions
  riscv: Fixed misaligned memory access. Fixed pointer comparison.
  MAINTAINERS: update riscv/microchip entry
  riscv: dts: microchip: add new peripherals to icicle kit device tree
  ...
 2022-03-25 10:11:38 -07:00
Linus Torvalds
d710d370c4 s390 updates for the 5.18 merge window 
- Raise minimum supported machine generation to z10, which comes with
   various cleanups and code simplifications (usercopy/spectre
   mitigation/etc).
 
 - Rework extables and get rid of anonymous out-of-line fixups.
 
 - Page table helpers cleanup. Add set_pXd()/set_pte() helper
   functions. Covert pte_val()/pXd_val() macros to functions.
 
 - Optimize kretprobe handling by avoiding extra kprobe on
   __kretprobe_trampoline.
 
 - Add support for CEX8 crypto cards.
 
 - Allow to trigger AP bus rescan via writing to /sys/bus/ap/scans.
 
 - Add CONFIG_EXPOLINE_EXTERN option to build the kernel without COMDAT
   group sections which simplifies kpatch support.
 
 - Always use the packed stack layout and extend kernel unwinder tests.
 
 - Add sanity checks for ftrace code patching.
 
 - Add s390dbf debug log for the vfio_ap device driver.
 
 - Various virtual vs physical address confusion fixes.
 
 - Various small fixes and improvements all over the code.
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Merge tag 's390-5.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 updates from Vasily Gorbik:

 - Raise minimum supported machine generation to z10, which comes with
   various cleanups and code simplifications (usercopy/spectre
   mitigation/etc).

 - Rework extables and get rid of anonymous out-of-line fixups.

 - Page table helpers cleanup. Add set_pXd()/set_pte() helper functions.
   Covert pte_val()/pXd_val() macros to functions.

 - Optimize kretprobe handling by avoiding extra kprobe on
   __kretprobe_trampoline.

 - Add support for CEX8 crypto cards.

 - Allow to trigger AP bus rescan via writing to /sys/bus/ap/scans.

 - Add CONFIG_EXPOLINE_EXTERN option to build the kernel without COMDAT
   group sections which simplifies kpatch support.

 - Always use the packed stack layout and extend kernel unwinder tests.

 - Add sanity checks for ftrace code patching.

 - Add s390dbf debug log for the vfio_ap device driver.

 - Various virtual vs physical address confusion fixes.

 - Various small fixes and improvements all over the code.

* tag 's390-5.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (69 commits)
  s390/test_unwind: add kretprobe tests
  s390/kprobes: Avoid additional kprobe in kretprobe handling
  s390: convert ".insn" encoding to instruction names
  s390: assume stckf is always present
  s390/nospec: move to single register thunks
  s390: raise minimum supported machine generation to z10
  s390/uaccess: Add copy_from/to_user_key functions
  s390/nospec: align and size extern thunks
  s390/nospec: add an option to use thunk-extern
  s390/nospec: generate single register thunks if possible
  s390/pci: make zpci_set_irq()/zpci_clear_irq() static
  s390: remove unused expoline to BC instructions
  s390/irq: use assignment instead of cast
  s390/traps: get rid of magic cast for per code
  s390/traps: get rid of magic cast for program interruption code
  s390/signal: fix typo in comments
  s390/asm-offsets: remove unused defines
  s390/test_unwind: avoid build warning with W=1
  s390: remove .fixup section
  s390/bpf: encode register within extable entry
  ...
 2022-03-25 10:01:34 -07:00
Linus Torvalds
1f1c153e40 powerpc updates for 5.18 
- Enforce kernel RO, and implement STRICT_MODULE_RWX for 603.
 
  - Add support for livepatch to 32-bit.
 
  - Implement CONFIG_DYNAMIC_FTRACE_WITH_ARGS.
 
  - Merge vdso64 and vdso32 into a single directory.
 
  - Fix build errors with newer binutils.
 
  - Add support for UADDR64 relocations, which are emitted by some toolchains. This allows
    powerpc to build with the latest lld.
 
  - Fix (another) potential userspace r13 corruption in transactional memory handling.
 
  - Cleanups of function descriptor handling & related fixes to LKDTM.
 
 Thanks to: Abdul Haleem, Alexey Kardashevskiy, Anders Roxell, Aneesh Kumar K.V, Anton
 Blanchard, Arnd Bergmann, Athira Rajeev, Bhaskar Chowdhury, Cédric Le Goater, Chen
 Jingwen, Christophe JAILLET, Christophe Leroy, Corentin Labbe, Daniel Axtens, Daniel
 Henrique Barboza, David Dai, Fabiano Rosas, Ganesh Goudar, Guo Zhengkui, Hangyu Hua, Haren
 Myneni, Hari Bathini, Igor Zhbanov, Jakob Koschel, Jason Wang, Jeremy Kerr, Joachim
 Wiberg, Jordan Niethe, Julia Lawall, Kajol Jain, Kees Cook, Laurent Dufour, Madhavan
 Srinivasan, Mamatha Inamdar, Maxime Bizon, Maxim Kiselev, Maxim Kochetkov, Michal
 Suchanek, Nageswara R Sastry, Nathan Lynch, Naveen N. Rao, Nicholas Piggin, Nour-eddine
 Taleb, Paul Menzel, Ping Fang, Pratik R. Sampat, Randy Dunlap, Ritesh Harjani, Rohan
 McLure, Russell Currey, Sachin Sant, Segher Boessenkool, Shivaprasad G Bhat, Sourabh Jain,
 Thierry Reding, Tobias Waldekranz, Tyrel Datwyler, Vaibhav Jain, Vladimir Oltean, Wedson
 Almeida Filho, YueHaibing.
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Merge tag 'powerpc-5.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc updates from Michael Ellerman:
 "Livepatch support for 32-bit is probably the standout new feature,
  otherwise mostly just lots of bits and pieces all over the board.

  There's a series of commits cleaning up function descriptor handling,
  which touches a few other arches as well as LKDTM. It has acks from
  Arnd, Kees and Helge.

  Summary:

   - Enforce kernel RO, and implement STRICT_MODULE_RWX for 603.

   - Add support for livepatch to 32-bit.

   - Implement CONFIG_DYNAMIC_FTRACE_WITH_ARGS.

   - Merge vdso64 and vdso32 into a single directory.

   - Fix build errors with newer binutils.

   - Add support for UADDR64 relocations, which are emitted by some
     toolchains. This allows powerpc to build with the latest lld.

   - Fix (another) potential userspace r13 corruption in transactional
     memory handling.

   - Cleanups of function descriptor handling & related fixes to LKDTM.

  Thanks to Abdul Haleem, Alexey Kardashevskiy, Anders Roxell, Aneesh
  Kumar K.V, Anton Blanchard, Arnd Bergmann, Athira Rajeev, Bhaskar
  Chowdhury, Cédric Le Goater, Chen Jingwen, Christophe JAILLET,
  Christophe Leroy, Corentin Labbe, Daniel Axtens, Daniel Henrique
  Barboza, David Dai, Fabiano Rosas, Ganesh Goudar, Guo Zhengkui, Hangyu
  Hua, Haren Myneni, Hari Bathini, Igor Zhbanov, Jakob Koschel, Jason
  Wang, Jeremy Kerr, Joachim Wiberg, Jordan Niethe, Julia Lawall, Kajol
  Jain, Kees Cook, Laurent Dufour, Madhavan Srinivasan, Mamatha Inamdar,
  Maxime Bizon, Maxim Kiselev, Maxim Kochetkov, Michal Suchanek,
  Nageswara R Sastry, Nathan Lynch, Naveen N. Rao, Nicholas Piggin,
  Nour-eddine Taleb, Paul Menzel, Ping Fang, Pratik R. Sampat, Randy
  Dunlap, Ritesh Harjani, Rohan McLure, Russell Currey, Sachin Sant,
  Segher Boessenkool, Shivaprasad G Bhat, Sourabh Jain, Thierry Reding,
  Tobias Waldekranz, Tyrel Datwyler, Vaibhav Jain, Vladimir Oltean,
  Wedson Almeida Filho, and YueHaibing"

* tag 'powerpc-5.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (179 commits)
  powerpc/pseries: Fix use after free in remove_phb_dynamic()
  powerpc/time: improve decrementer clockevent processing
  powerpc/time: Fix KVM host re-arming a timer beyond decrementer range
  powerpc/tm: Fix more userspace r13 corruption
  powerpc/xive: fix return value of __setup handler
  powerpc/64: Add UADDR64 relocation support
  powerpc: 8xx: fix a return value error in mpc8xx_pic_init
  powerpc/ps3: remove unneeded semicolons
  powerpc/64: Force inlining of prevent_user_access() and set_kuap()
  powerpc/bitops: Force inlining of fls()
  powerpc: declare unmodified attribute_group usages const
  powerpc/spufs: Fix build warning when CONFIG_PROC_FS=n
  powerpc/secvar: fix refcount leak in format_show()
  powerpc/64e: Tie PPC_BOOK3E_64 to PPC_FSL_BOOK3E
  powerpc: Move C prototypes out of asm-prototypes.h
  powerpc/kexec: Declare kexec_paca static
  powerpc/smp: Declare current_set static
  powerpc: Cleanup asm-prototypes.c
  powerpc/ftrace: Use STK_GOT in ftrace_mprofile.S
  powerpc/ftrace: Regroup PPC64 specific operations in ftrace_mprofile.S
  ...
 2022-03-25 09:39:36 -07:00
Kees Cook
25fd2d41b5 selftests: kselftest framework: provide "finished" helper 
Instead of having each time that wants to use ksft_exit() have to figure
out the internals of kselftest.h, add the helper ksft_finished() that
makes sure the passes, xfails, and skips are equal to the test plan count.

Link: https://lkml.kernel.org/r/20220201013717.2464392-1-keescook@chromium.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2022-03-24 19:06:51 -07:00
Mike Kravetz
9ae8f2b849 userfaultfd/selftests: enable hugetlb remap and remove event testing 
With MADV_DONTNEED support added to hugetlb mappings, mremap testing can
also be enabled for hugetlb.

Modify the tests to use madvise MADV_DONTNEED and MADV_REMOVE instead of
fallocate hole puch for releasing hugetlb pages.

Link: https://lkml.kernel.org/r/20220215002348.128823-4-mike.kravetz@oracle.com
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Reviewed-by: Axel Rasmussen <axelrasmussen@google.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Mina Almasry <almasrymina@google.com>
Cc: Naoya Horiguchi <naoya.horiguchi@linux.dev>
Cc: Peter Xu <peterx@redhat.com>
Cc: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2022-03-24 19:06:50 -07:00
Mike Kravetz
c4b6cb8840 selftests/vm: add hugetlb madvise MADV_DONTNEED MADV_REMOVE test 
Now that MADV_DONTNEED support for hugetlb is enabled, add corresponding
tests.  MADV_REMOVE has been enabled for some time, but no tests exist so
add them as well.

Link: https://lkml.kernel.org/r/20220215002348.128823-3-mike.kravetz@oracle.com
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Reviewed-by: Shuah Khan <skhan@linuxfoundation.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Mina Almasry <almasrymina@google.com>
Cc: Naoya Horiguchi <naoya.horiguchi@linux.dev>
Cc: Peter Xu <peterx@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2022-03-24 19:06:50 -07:00
Mike Rapoport
6f6a841fb7 selftest/vm: add helpers to detect PAGE_SIZE and PAGE_SHIFT 
PAGE_SIZE is not 4096 in many configurations, particularly ppc64 uses 64K
pages in majority of cases.

Add helpers to detect PAGE_SIZE and PAGE_SHIFT dynamically.

Without this tests are broken w.r.t reading /proc/self/pagemap

    if (pread(pagemap_fd, ent, sizeof(ent),
              (uintptr_t)ptr >> (PAGE_SHIFT - 3)) != sizeof(ent))
              err(2, "read pagemap");

Link: https://lkml.kernel.org/r/20220307054355.149820-2-aneesh.kumar@linux.ibm.com
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2022-03-24 19:06:45 -07:00
Aneesh Kumar K.V
90647d9d72 selftest/vm: add util.h and and move helper functions there 
Avoid code duplication by adding util.h.  No functional change in this
patch.

Link: https://lkml.kernel.org/r/20220307054355.149820-1-aneesh.kumar@linux.ibm.com
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2022-03-24 19:06:45 -07:00
Jiajian Ye
9c8a0a8e59 tools/vm/page_owner_sort.c: support for user-defined culling rules 
When viewing page owner information, we may want to cull blocks of
information with our own rules.  So it is important to enhance culling
function to provide the support for customizing culling rules.
Therefore, following adjustments are made:

1. Add --cull option to support the culling of blocks of information
   with user-defined culling rules.

	./page_owner_sort <input> <output> --cull=<rules>
	./page_owner_sort <input> <output> --cull <rules>

  <rules> is a single argument in the form of a comma-separated list to
  specify individual culling rules, by the sequence of keys k1,k2, ....
  Mixed use of abbreviated and complete-form of keys is allowed.

  For reference, please see the document(Documentation/vm/page_owner.rst).

Now, assuming two blocks in the input file are as follows:

	Page allocated via order 0, mask xxxx, pid 1, tgid 1 (task_name_demo)
	PFN xxxx
	 prep_new_page+0xd0/0xf8
	 get_page_from_freelist+0x4a0/0x1290
	 __alloc_pages+0x168/0x340
	 alloc_pages+0xb0/0x158

	Page allocated via order 0, mask xxxx, pid 32, tgid 32 (task_name_demo)
	PFN xxxx
	 prep_new_page+0xd0/0xf8
	 get_page_from_freelist+0x4a0/0x1290
	 __alloc_pages+0x168/0x340
	 alloc_pages+0xb0/0x158

If we want to cull the blocks by stacktrace and task command name, we can
use this command:

	./page_owner_sort <input> <output> --cull=stacktrace,name

The output would be like:

	2 times, 2 pages, task_comm_name: task_name_demo
	 prep_new_page+0xd0/0xf8
	 get_page_from_freelist+0x4a0/0x1290
	 __alloc_pages+0x168/0x340
	 alloc_pages+0xb0/0x158

As we can see, these two blocks are culled successfully, for they share
the same pid and task command name.

However, if we want to cull the blocks by pid, stacktrace and task command
name, we can this command:

	./page_owner_sort <input> <output> --cull=stacktrace,name,pid

The output would be like:

	1 times, 1 pages, PID 1, task_comm_name: task_name_demo
	 prep_new_page+0xd0/0xf8
	 get_page_from_freelist+0x4a0/0x1290
	 __alloc_pages+0x168/0x340
	 alloc_pages+0xb0/0x158

	1 times, 1 pages, PID 32, task_comm_name: task_name_demo
	 prep_new_page+0xd0/0xf8
	 get_page_from_freelist+0x4a0/0x1290
	 __alloc_pages+0x168/0x340
	 alloc_pages+0xb0/0x158

As we can see, these two blocks are failed to cull, for their PIDs are
different.

2. Add explanations of --cull options to the document.

This work is coauthored by
	Yixuan Cao
	Shenghong Han
	Yinan Zhang
	Chongxi Zhao
	Yuhong Feng

Link: https://lkml.kernel.org/r/20220312145834.624-1-yejiajian2018@email.szu.edu.cn
Signed-off-by: Jiajian Ye <yejiajian2018@email.szu.edu.cn>
Cc: Yixuan Cao <caoyixuan2019@email.szu.edu.cn>
Cc: Shenghong Han <hanshenghong2019@email.szu.edu.cn>
Cc: Yinan Zhang <zhangyinan2019@email.szu.edu.cn>
Cc: Chongxi Zhao <zhaochongxi2019@email.szu.edu.cn>
Cc: Yuhong Feng <yuhongf@szu.edu.cn>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Sean Anderson <seanga2@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2022-03-24 19:06:45 -07:00