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5e0fed717a
315 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Ravi Bangoria
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f0fabf9c89 |
perf mem/c2c: Fix perf_mem_events to support powerpc
PowerPC hardware does not have a builtin latency filter (--ldlat) for the "mem-load" event and perf_mem_events by default includes "/ldlat=30/" which is causing a failure on PowerPC. Refactor the code to support "perf mem/c2c" on PowerPC. This patch depends on kernel side changes done my Madhavan: https://lists.ozlabs.org/pipermail/linuxppc-dev/2018-December/182596.html Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Dick Fowles <fowles@inreach.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Joe Mario <jmario@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Namhyung Kim <namhyung@kernel.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/20190129132412.771-1-ravi.bangoria@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Linus Torvalds
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c5b709804e |
powerpc fixes for 5.0 #3
A couple of weeks of fixes. There's one fix for an oops on Power9 machines with Open CAPI adapters. And a fix for probable memory corruption in some of the new NPU code, caught by smatch though and not seen in the wild. Plus a few other minor fixes. There's one non-fix which is the perf_regs change. That was sent during the merge window but I accidentally only merged the first of two patches in the series. It's been in linux-next so hopefully doesn't conflict with anything in acme's tree. Thanks to: Alexey Kardashevskiy, Andrew Donnellan, Breno Leitao, Christian Lamparter, Christophe Leroy, Dan Carpenter, Frederic Barrat, Greg Kurz, Jason A. Donenfeld, Madhavan Srinivasan. -----BEGIN PGP SIGNATURE----- iQIcBAABAgAGBQJcQcioAAoJEFHr6jzI4aWAMxoP/j2w/p1z5As/rMQRH9L0wTDV Z/69GkRnj+rkRSNBWJ2T/0KY6c1mXPH4R2nvmFNfdEYzXWLh+Ymn65RQ3ifQnb56 C5PPjVOPruiCjKAWiNYGr8S+Ev8IehZU0zXXToCwV1MKCMU0QcO6Q1HtEVI56WhV xtQfBJz1tkPJ4Ep9HZ7go7p6SKaFmmWh/Z8pg02s5DOlGN4bKFQ3Qc+XnNPw5vc8 LgjrwrOIQ7D+lXa6saQWbV16ktLzzpsxDfxXHXNTz0bOjyuQAXfdnfGJnEoDowYa Pqio5fm1rcjXcHtqwuSsRWeYi+dzO+AYj0WUrqevcPSAMM0RwmqREcfBGLvAlPWA fYfuMMB5zhf9HkDHkx4+8pvZ6io+VDP5k5YF7ZnQfz8tVYAboTmRvIiGAM8ks8hC 6DnNdV2WojBeoK2gWsgX+WAIc4Ynk+u0554kf884rtiK7TSCRq63JNTeTmIr8v/u 7g5qwlC99RDYsl/ZkY2eQviiQo6dWXTwRCZ9lbk/iLivc90ulN7P+8r3oaQNV6ja zYpiLz95fpL7g5G0caW3AZTzfnJxOGioaCGOQc/hZHzhdc7p9zWH+7sd9mPMGayu iTMn66h2v8cf6o6u2peAf15NQvR0jHe8mIccUpRJTXWwnlVMI2WAcXqlpE+9fj5V gBZ0MuitQtX0qLEtFpUa =hlZ7 -----END PGP SIGNATURE----- Merge tag 'powerpc-5.0-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc fixes from Michael Ellerman: "A couple of weeks of fixes. There's one fix for an oops on Power9 machines with Open CAPI adapters. And a fix for probable memory corruption in some of the new NPU code, caught by smatch though and not seen in the wild. Plus a few other minor fixes. There's one non-fix which is the perf_regs change. That was sent during the merge window but I accidentally only merged the first of two patches in the series. It's been in linux-next so hopefully doesn't conflict with anything in acme's tree. Thanks to: Alexey Kardashevskiy, Andrew Donnellan, Breno Leitao, Christian Lamparter, Christophe Leroy, Dan Carpenter, Frederic Barrat, Greg Kurz, Jason A. Donenfeld, Madhavan Srinivasan" * tag 'powerpc-5.0-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: powerpc/syscalls: Fix syscall tracing powerpc/pseries: Fix build break due to pnv_npu2_init() powerpc/4xx/ocm: Fix fix for phys_addr_t printf warnings powerpc/powernv/npu: Fix oops in pnv_try_setup_npu_table_group() powerpc/tm: Limit TM code inside PPC_TRANSACTIONAL_MEM powerpc/8xx: fix setting of pagetable for Abatron BDI debug tool. powerpc/powernv/npu: Allocate enough memory in pnv_try_setup_npu_table_group() powerpc/perf: Update perf_regs structure to include MMCRA |
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Ravi Bangoria
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0206131811 |
perf powerpc: Rework syscall table generation
Commit
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Florian Fainelli
|
21327c7843 |
perf tests: Add a test for the ARM 32-bit [vectors] page
perf on ARM requires CONFIG_KUSER_HELPERS to be turned on to allow some independance with respect to the ARM CPU being used. Add a test which tries to locate the [vectors] page, created when CONFIG_KUSER_HELPERS is turned on to help asses the system's health. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Chris Healy <cphealy@gmail.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Kim Phillips <kim.phillips@arm.com> Cc: Lucas Stach <l.stach@pengutronix.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Cc: Russell King <rmk+kernel@armlinux.org.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Thomas Richter <tmricht@linux.ibm.com> Link: http://lkml.kernel.org/r/20181221034337.26663-3-f.fainelli@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Madhavan Srinivasan
|
6529870cb0 |
powerpc/perf: Update perf_regs structure to include MMCRA
On each sample, Monitor Mode Control Register A (MMCRA) content is
saved in pt_regs. MMCRA does not have a entry as-is in the pt_regs but
instead, MMCRA content is saved in the "dsisr" register of pt_regs.
Patch adds another entry to the perf_regs structure to include the
"MMCRA" printing which internally maps to the "dsisr" of pt_regs.
It also check for the MMCRA availability in the platform and present
value accordingly
mpe: This was the 2nd patch in a series with commit
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Linus Torvalds
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889bb74302 |
nds32 patches for 4.21
Here is the nds32 patch set based on 4.20-rc1. Contained in here are 1. Perf support 2. Power management support 3. FPU support 4. Hardware prefetcher support 5. Build error fixed 6. Performance enhancement These are the LTP20170427 testing results. Total Tests: 1902 Total Skipped Tests: 603 Total Failures: 410 Kernel Version: 4.20.0-rc1-00016-ge0db606bc023 Machine Architecture: nds32 Hostname: greentime-d15-ae3xx -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.17 (GNU/Linux) iQIcBAABAgAGBQJcJdsZAAoJEHfB0l0b2JxEV7QQAJLwF0ixvOhCO+y4tM9596ai BiV+duMg9tvJkbrfM4Rli5Bd2PpZdNoWtwXRi6azgORkczx5ioYJFSFmkodvhlb9 WQfYiDeD1PF1/kWQyT9xQm4x/kpDTWDHROacUENLlwJn/36iqTKVPn2aSFR5hhDv fVbYUyCqvUq+jRaxvcL95KirGMJZNFZhT+OMnLwVbxwcFCstOTkTAS+K5GIOfg6Z I0ONlcM+N9ezrsqfIiaO45nXD9OVsTTHGqrXVuh5GF8KMVARImCOxAtehpt5jdmE xw3YMlzUNzKfdB8olu9rb903UcW1Vy2g/5H9paFhPGPNmWtlMV5zgKrTAQM1ETWC JNJaL4oDWfQPJdV191rmAgcTOxvZbbAGlGjjViOZMvwgrjUIWgA0+vAzmBQvW0cQ EYj4nHwaAIVA2p3Mobt5i9inH/xm7vKoLHqvqUNgdl4JVDbtyGBOxV2f9pEtU7ij AZCDc0EBhR/3Tqj48YLSrInkMVyc4CRtSPTZxkQmot02+iJsEROo7GZyDTwmxdgw epKDZeMnTGNF3atGBtuVLBhrj+l2W88WGFq52hT841WqfFknTar0J/M4b3FXCm6g EjeADk6Oy9eI/gDAAWnRDptZbZEqtA0qguTBrNtS5kqI1rX6kREMJnnJ3KuqB0bK qT/3aw6a4nFOVdtgYw5z =Gy5E -----END PGP SIGNATURE----- Merge tag 'nds32-for-linus-4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/greentime/linux Pull nds32 updates from Greentime Hu: - Perf support - Power management support - FPU support - Hardware prefetcher support - Build error fixed - Performance enhancement * tag 'nds32-for-linus-4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/greentime/linux: nds32: support hardware prefetcher nds32: Fix the items of hwcap_str ordering issue. math-emu/soft-fp.h: (_FP_ROUND_ZERO) cast 0 to void to fix warning math-emu/op-2.h: Use statement expressions to prevent negative constant shift nds32: support denormalized result through FP emulator nds32: Support FP emulation nds32: nds32 FPU port nds32: Remove duplicated include from pm.c nds32: Power management for nds32 nds32: Add document for NDS32 PMU. nds32: Add perf call-graph support. nds32: Perf porting nds32: Fix bug in bitfield.h nds32: Fix gcc 8.0 compiler option incompatible. nds32: Fill all TLB entries with kernel image mapping nds32: Remove the redundant assignment |
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Linus Torvalds
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8d6973327e |
powerpc updates for 4.21
Notable changes:
- Mitigations for Spectre v2 on some Freescale (NXP) CPUs.
- A large series adding support for pass-through of Nvidia V100 GPUs to guests
on Power9.
- Another large series to enable hardware assistance for TLB table walk on
MPC8xx CPUs.
- Some preparatory changes to our DMA code, to make way for further cleanups
from Christoph.
- Several fixes for our Transactional Memory handling discovered by fuzzing the
signal return path.
- Support for generating our system call table(s) from a text file like other
architectures.
- A fix to our page fault handler so that instead of generating a WARN_ON_ONCE,
user accesses of kernel addresses instead print a ratelimited and
appropriately scary warning.
- A cosmetic change to make our unhandled page fault messages more similar to
other arches and also more compact and informative.
- Freescale updates from Scott:
"Highlights include elimination of legacy clock bindings use from dts
files, an 83xx watchdog handler, fixes to old dts interrupt errors, and
some minor cleanup."
And many clean-ups, reworks and minor fixes etc.
Thanks to:
Alexandre Belloni, Alexey Kardashevskiy, Andrew Donnellan, Aneesh Kumar K.V,
Arnd Bergmann, Benjamin Herrenschmidt, Breno Leitao, Christian Lamparter,
Christophe Leroy, Christoph Hellwig, Daniel Axtens, Darren Stevens, David
Gibson, Diana Craciun, Dmitry V. Levin, Firoz Khan, Geert Uytterhoeven, Greg
Kurz, Gustavo Romero, Hari Bathini, Joel Stanley, Kees Cook, Madhavan
Srinivasan, Mahesh Salgaonkar, Markus Elfring, Mathieu Malaterre, Michal
Suchánek, Naveen N. Rao, Nick Desaulniers, Oliver O'Halloran, Paul Mackerras,
Ram Pai, Ravi Bangoria, Rob Herring, Russell Currey, Sabyasachi Gupta, Sam
Bobroff, Satheesh Rajendran, Scott Wood, Segher Boessenkool, Stephen Rothwell,
Tang Yuantian, Thiago Jung Bauermann, Yangtao Li, Yuantian Tang, Yue Haibing.
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Merge tag 'powerpc-4.21-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman:
"Notable changes:
- Mitigations for Spectre v2 on some Freescale (NXP) CPUs.
- A large series adding support for pass-through of Nvidia V100 GPUs
to guests on Power9.
- Another large series to enable hardware assistance for TLB table
walk on MPC8xx CPUs.
- Some preparatory changes to our DMA code, to make way for further
cleanups from Christoph.
- Several fixes for our Transactional Memory handling discovered by
fuzzing the signal return path.
- Support for generating our system call table(s) from a text file
like other architectures.
- A fix to our page fault handler so that instead of generating a
WARN_ON_ONCE, user accesses of kernel addresses instead print a
ratelimited and appropriately scary warning.
- A cosmetic change to make our unhandled page fault messages more
similar to other arches and also more compact and informative.
- Freescale updates from Scott:
"Highlights include elimination of legacy clock bindings use from
dts files, an 83xx watchdog handler, fixes to old dts interrupt
errors, and some minor cleanup."
And many clean-ups, reworks and minor fixes etc.
Thanks to: Alexandre Belloni, Alexey Kardashevskiy, Andrew Donnellan,
Aneesh Kumar K.V, Arnd Bergmann, Benjamin Herrenschmidt, Breno Leitao,
Christian Lamparter, Christophe Leroy, Christoph Hellwig, Daniel
Axtens, Darren Stevens, David Gibson, Diana Craciun, Dmitry V. Levin,
Firoz Khan, Geert Uytterhoeven, Greg Kurz, Gustavo Romero, Hari
Bathini, Joel Stanley, Kees Cook, Madhavan Srinivasan, Mahesh
Salgaonkar, Markus Elfring, Mathieu Malaterre, Michal Suchánek, Naveen
N. Rao, Nick Desaulniers, Oliver O'Halloran, Paul Mackerras, Ram Pai,
Ravi Bangoria, Rob Herring, Russell Currey, Sabyasachi Gupta, Sam
Bobroff, Satheesh Rajendran, Scott Wood, Segher Boessenkool, Stephen
Rothwell, Tang Yuantian, Thiago Jung Bauermann, Yangtao Li, Yuantian
Tang, Yue Haibing"
* tag 'powerpc-4.21-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (201 commits)
Revert "powerpc/fsl_pci: simplify fsl_pci_dma_set_mask"
powerpc/zImage: Also check for stdout-path
powerpc: Fix HMIs on big-endian with CONFIG_RELOCATABLE=y
macintosh: Use of_node_name_{eq, prefix} for node name comparisons
ide: Use of_node_name_eq for node name comparisons
powerpc: Use of_node_name_eq for node name comparisons
powerpc/pseries/pmem: Convert to %pOFn instead of device_node.name
powerpc/mm: Remove very old comment in hash-4k.h
powerpc/pseries: Fix node leak in update_lmb_associativity_index()
powerpc/configs/85xx: Enable CONFIG_DEBUG_KERNEL
powerpc/dts/fsl: Fix dtc-flagged interrupt errors
clk: qoriq: add more compatibles strings
powerpc/fsl: Use new clockgen binding
powerpc/83xx: handle machine check caused by watchdog timer
powerpc/fsl-rio: fix spelling mistake "reserverd" -> "reserved"
powerpc/fsl_pci: simplify fsl_pci_dma_set_mask
arch/powerpc/fsl_rmu: Use dma_zalloc_coherent
vfio_pci: Add NVIDIA GV100GL [Tesla V100 SXM2] subdriver
vfio_pci: Allow regions to add own capabilities
vfio_pci: Allow mapping extra regions
...
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Madhavan Srinivasan
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333804dc3b |
powerpc/perf: Update perf_regs structure to include SIER
On each sample, Sample Instruction Event Register (SIER) content is saved in pt_regs. SIER does not have a entry as-is in the pt_regs but instead, SIER content is saved in the "dar" register of pt_regs. Patch adds another entry to the perf_regs structure to include the "SIER" printing which internally maps to the "dar" of pt_regs. It also check for the SIER availability in the platform and present value accordingly Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> |
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Eugeniy Paltsev
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6d99a79cb4 |
perf annotate: Introduce basic support for ARC
Introduce basic 'perf annotate' support for ARC to be able to use anotation via stdio interface. Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Brodkin <alexey.brodkin@synopsys.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: linux-snps-arc@lists.infradead.org Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Vineet Gupta <vineet.gupta1@synopsys.com> Link: http://lkml.kernel.org/r/20181204175118.25232-1-Eugeniy.Paltsev@synopsys.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Ingo Molnar
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adba163441 |
perf tools: Fix diverse comment typos
Go over the tools/ files that are maintained in Arnaldo's tree and fix common typos: half of them were in comments, the other half in JSON files. No change in functionality intended. Committer notes: This was split from a larger patch as there are code that is, additionally, maintained outside the kernel tree, so to ease cherry-picking and/or backporting, split this into multiple patches. Just typos in comments, no need to backport, reducing the possibility of possible backporting artifacts. Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20181203102200.GA104797@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Adrian Hunter
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1c6f709b9f |
perf intel-pt: Fix error with config term "pt=0"
Users should never use 'pt=0', but if they do it may give a meaningless error: $ perf record -e intel_pt/pt=0/u uname Error: The sys_perf_event_open() syscall returned with 22 (Invalid argument) for event (intel_pt/pt=0/u). Fix that by forcing 'pt=1'. Committer testing: # perf record -e intel_pt/pt=0/u uname Error: The sys_perf_event_open() syscall returned with 22 (Invalid argument) for event (intel_pt/pt=0/u). /bin/dmesg | grep -i perf may provide additional information. # perf record -e intel_pt/pt=0/u uname pt=0 doesn't make sense, forcing pt=1 Linux [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.020 MB perf.data ] # Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/b7c5b4e5-9497-10e5-fd43-5f3e4a0fe51d@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Adrian Hunter
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ec1891afae |
perf machine: Record if a arch has a single user/kernel address space
Some architectures have a single address space for kernel and user addresses, which makes it possible to determine if an address is in kernel space or user space. Some don't, e.g.: sparc. Cache that info in perf_env so that, for instance, code needing to fallback failed symbol lookups at the kernel space in single address space arches can lookup at userspace. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: David S. Miller <davem@davemloft.net> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: stable@vger.kernel.org # 4.19 Link: http://lkml.kernel.org/r/20181106210712.12098-2-adrian.hunter@intel.com [ split from a larger patch ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Kan Liang
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3b54411a44 |
perf vendor events: Add stepping in CPUID string for x86
The perf tools cannot find the proper event list for the Cascadelake server. Because the Cascadelake server and the Skylake server have the same CPU model number, which are used by the perf tools to find the event list. The stepping for Skylake server is up to 4. The stepping for Cascadelake server starts from 5. The stepping can be used to distinguish between them. The stepping is added in get_cpuid_str(). The stepping information for Skylake server is updated in mapfile.csv. A x86 specific strcmp_cpuid_cmp() function is added to handle two CPUID formats in mapfile.csv, "vendor-family-model-stepping" and "vendor-family-model": - If a cpuid-regular-expression from the mapfile.csv using the new stepping format, a cpuid-string generated on the machine must include stepping. Otherwise, it is a mismatch. - If the cpuid-regular-expression using the old non-stepping format, the stepping in the cpuid-string will be ignored. The script, using environment string "PERF_CPUID" without stepping on Skylake server, will be broken. If so, users must fix their scripts. Committer notes: Fixed this build error on centos:6 and debian:7: arch/x86/util/header.c: In function 'is_full_cpuid': arch/x86/util/header.c:82:39: error: declaration of 'cpuid' shadows a global declaration [-Werror=shadow] arch/x86/util/header.c:12:1: error: shadowed declaration is here [-Werror=shadow] arch/x86/util/header.c: In function 'strcmp_cpuid_str': arch/x86/util/header.c:98:56: error: declaration of 'cpuid' shadows a global declaration [-Werror=shadow] arch/x86/util/header.c:12:1: error: shadowed declaration is here [-Werror=shadow] cc1: all warnings being treated as errors Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Reviewed-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20181114212416.15665-1-kan.liang@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Pu Wen
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4787eff3fa |
perf tools: Add Hygon Dhyana support
The tool perf is useful for the performance analysis on the Hygon Dhyana platform. But right now there is no Hygon support for it to analyze the KVM guest os data. So add Hygon Dhyana support to it by checking vendor string to share the code path of AMD. Signed-off-by: Pu Wen <puwen@hygon.cn> Acked-by: Borislav Petkov <bp@suse.de> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1542008451-31735-1-git-send-email-puwen@hygon.cn Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Nickhu
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ebd09753b5 |
nds32: Perf porting
This is the commit that porting the perf for nds32. 1.Raw event: The raw events start with 'r'. Usage: perf stat -e rXYZ ./app X: the index of performance counter. YZ: the index(convert to hexdecimal) of events Example: 'perf stat -e r101 ./app' means the counter 1 will count the instruction event. The index of counter and events can be found in "Andes System Privilege Architecture Version 3 Manual". Or you can perform the 'perf list' to find the symbolic name of raw events. 2.Perf mmap2: Fix unexpected perf mmap2() page fault When the mmap2() called by perf application, you will encounter such condition:"failed to write." With return value -EFAULT This is due to the page fault caused by "reading" buffer from the mapped legal address region to write to the descriptor. The page_fault handler will get a VM_FAULT_SIGBUS return value, which should not happens here.(Due to this is a read request.) You can refer to kernel/events/core.c:perf_mmap_fault(...) If "(vmf->pgoff && (vmf->flags & FAULT_FLAG_WRITE))" is evaluated as true, you will get VM_FAULT_SIGBUS as return value. However, this is not an write request. The flags which indicated why the page fault happens is wrong. Furthermore, NDS32 SPAv3 is not able to detect it is read or write. It only know either it is instruction fetch or data access. Therefore, by removing the wrong flag assignment(actually, the hardware is not able to show the reason), we can fix this bug. 3.Perf multiple events map to same counter. When there are multiple events map to the same counter, the counter counts inaccurately. This is because each counter only counts one event in the same time. So when there are multiple events map to same counter, they have to take turns in each context. There are two solution: 1. Print the error message when multiple events map to the same counter. But print the error message would let the program hang in loop. The ltp (linux test program) would be failed when the program hang in loop. 2. Don't print the error message, the ltp would pass. But the user need to have the knowledge that don't count the events which map to the same counter, or the user will get the inaccurate results. We choose method 2 for the solution Signed-off-by: Nickhu <nickhu@andestech.com> Acked-by: Greentime Hu <greentime@andestech.com> Signed-off-by: Greentime Hu <greentime@andestech.com> |
||
|
Ingo Molnar
|
f0718d792b |
Merge branch 'linus' into perf/urgent, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org> |
||
|
Linus Torvalds
|
0d1e8b8d2b |
KVM updates for v4.20
ARM:
- Improved guest IPA space support (32 to 52 bits)
- RAS event delivery for 32bit
- PMU fixes
- Guest entry hardening
- Various cleanups
- Port of dirty_log_test selftest
PPC:
- Nested HV KVM support for radix guests on POWER9. The performance is
much better than with PR KVM. Migration and arbitrary level of
nesting is supported.
- Disable nested HV-KVM on early POWER9 chips that need a particular hardware
bug workaround
- One VM per core mode to prevent potential data leaks
- PCI pass-through optimization
- merge ppc-kvm topic branch and kvm-ppc-fixes to get a better base
s390:
- Initial version of AP crypto virtualization via vfio-mdev
- Improvement for vfio-ap
- Set the host program identifier
- Optimize page table locking
x86:
- Enable nested virtualization by default
- Implement Hyper-V IPI hypercalls
- Improve #PF and #DB handling
- Allow guests to use Enlightened VMCS
- Add migration selftests for VMCS and Enlightened VMCS
- Allow coalesced PIO accesses
- Add an option to perform nested VMCS host state consistency check
through hardware
- Automatic tuning of lapic_timer_advance_ns
- Many fixes, minor improvements, and cleanups
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Merge tag 'kvm-4.20-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM updates from Radim Krčmář:
"ARM:
- Improved guest IPA space support (32 to 52 bits)
- RAS event delivery for 32bit
- PMU fixes
- Guest entry hardening
- Various cleanups
- Port of dirty_log_test selftest
PPC:
- Nested HV KVM support for radix guests on POWER9. The performance
is much better than with PR KVM. Migration and arbitrary level of
nesting is supported.
- Disable nested HV-KVM on early POWER9 chips that need a particular
hardware bug workaround
- One VM per core mode to prevent potential data leaks
- PCI pass-through optimization
- merge ppc-kvm topic branch and kvm-ppc-fixes to get a better base
s390:
- Initial version of AP crypto virtualization via vfio-mdev
- Improvement for vfio-ap
- Set the host program identifier
- Optimize page table locking
x86:
- Enable nested virtualization by default
- Implement Hyper-V IPI hypercalls
- Improve #PF and #DB handling
- Allow guests to use Enlightened VMCS
- Add migration selftests for VMCS and Enlightened VMCS
- Allow coalesced PIO accesses
- Add an option to perform nested VMCS host state consistency check
through hardware
- Automatic tuning of lapic_timer_advance_ns
- Many fixes, minor improvements, and cleanups"
* tag 'kvm-4.20-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (204 commits)
KVM/nVMX: Do not validate that posted_intr_desc_addr is page aligned
Revert "kvm: x86: optimize dr6 restore"
KVM: PPC: Optimize clearing TCEs for sparse tables
x86/kvm/nVMX: tweak shadow fields
selftests/kvm: add missing executables to .gitignore
KVM: arm64: Safety check PSTATE when entering guest and handle IL
KVM: PPC: Book3S HV: Don't use streamlined entry path on early POWER9 chips
arm/arm64: KVM: Enable 32 bits kvm vcpu events support
arm/arm64: KVM: Rename function kvm_arch_dev_ioctl_check_extension()
KVM: arm64: Fix caching of host MDCR_EL2 value
KVM: VMX: enable nested virtualization by default
KVM/x86: Use 32bit xor to clear registers in svm.c
kvm: x86: Introduce KVM_CAP_EXCEPTION_PAYLOAD
kvm: vmx: Defer setting of DR6 until #DB delivery
kvm: x86: Defer setting of CR2 until #PF delivery
kvm: x86: Add payload operands to kvm_multiple_exception
kvm: x86: Add exception payload fields to kvm_vcpu_events
kvm: x86: Add has_payload and payload to kvm_queued_exception
KVM: Documentation: Fix omission in struct kvm_vcpu_events
KVM: selftests: add Enlightened VMCS test
...
|
||
Hongxu Jia
|
389373d330 |
perf arm64: Fix generate system call table failed with /tmp mounted with noexec
When /tmp is mounted with noexec, mksyscalltbl fails.
[snip]
|perf-1.0/tools/perf/arch/arm64/entry/syscalls//mksyscalltbl:
/tmp/create-table-6VGPSt: Permission denied
[snip]
Add variable TMPDIR as prefix dir of the temporary file, if it is set,
replace default /tmp.
Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kim Phillips <kim.phillips@arm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>
Cc: Sébastien Boisvert <sboisvert@gydle.com>
Cc: Thomas Richter <tmricht@linux.vnet.ibm.com>
Fixes:
|
||
David Miller
|
d87b9790b3 |
perf jitdump: Add Sparc support.
Signed-off-by: David S. Miller <davem@davemloft.net> Link: http://lkml.kernel.org/r/20181016.211545.1487970139012324624.davem@davemloft.net Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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David Miller
|
0ab4188664 |
perf annotate: Add Sparc support
E.g.:
$ perf annotate --stdio2
Samples: 7K of event 'cycles:ppp', 4000 Hz, Event count (approx.): 3086733887
__gettimeofday /lib32/libc-2.27.so [Percent: local period]
Percent│
│
│
│ Disassembly of section .text:
│
│ 000a6fa0 <__gettimeofday@@GLIBC_2.0>:
0.47 │ save %sp, -96, %sp
0.73 │ sethi %hi(0xe9000), %l7
│ → call __frame_state_for@@GLIBC_2.0+0x480
0.30 │ add %l7, 0x58, %l7 ! e9058 <nftw64@@GLIBC_2.3.3+0x818>
1.33 │ mov %i0, %o0
│ mov %i1, %o1
0.43 │ mov 0x74, %g1
│ ta 0x10
88.92 │ ↓ bcc 30
2.95 │ clr %g1
│ neg %o0
│ mov 1, %g1
0.31 │30: cmp %g1, 0
│ bne,pn %icc, a6fe4 <__gettimeofday@@GLIBC_2.0+0x44>
│ mov %o0, %i0
1.96 │ ← return %i7 + 8
2.62 │ nop
│ sethi %hi(0), %g1
│ neg %o0, %g2
│ add %g1, 0x160, %g1
│ ld [ %l7 + %g1 ], %g1
│ st %g2, [ %g7 + %g1 ]
│ ← return %i7 + 8
│ mov -1, %o0
Signed-off-by: David S. Miller <davem@davemloft.net>
Link: http://lkml.kernel.org/r/20181016.205555.1070918198627611771.davem@davemloft.net
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
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Paul Mackerras
|
9d67121a4f |
Merge remote-tracking branch 'remotes/powerpc/topic/ppc-kvm' into kvm-ppc-next
This merges in the "ppc-kvm" topic branch of the powerpc tree to get a series of commits that touch both general arch/powerpc code and KVM code. These commits will be merged both via the KVM tree and the powerpc tree. Signed-off-by: Paul Mackerras <paulus@ozlabs.org> |
||
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Paul Mackerras
|
d24ea8a733 |
KVM: PPC: Book3S: Simplify external interrupt handling
Currently we use two bits in the vcpu pending_exceptions bitmap to indicate that an external interrupt is pending for the guest, one for "one-shot" interrupts that are cleared when delivered, and one for interrupts that persist until cleared by an explicit action of the OS (e.g. an acknowledge to an interrupt controller). The BOOK3S_IRQPRIO_EXTERNAL bit is used for one-shot interrupt requests and BOOK3S_IRQPRIO_EXTERNAL_LEVEL is used for persisting interrupts. In practice BOOK3S_IRQPRIO_EXTERNAL never gets used, because our Book3S platforms generally, and pseries in particular, expect external interrupt requests to persist until they are acknowledged at the interrupt controller. That combined with the confusion introduced by having two bits for what is essentially the same thing makes it attractive to simplify things by only using one bit. This patch does that. With this patch there is only BOOK3S_IRQPRIO_EXTERNAL, and by default it has the semantics of a persisting interrupt. In order to avoid breaking the ABI, we introduce a new "external_oneshot" flag which preserves the behaviour of the KVM_INTERRUPT ioctl with the KVM_INTERRUPT_SET argument. Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@ozlabs.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> |
||
Kim Phillips
|
58094c48f4 |
perf annotate: Handle arm64 move instructions
Add default handler for non-jump instructions. This really only has an
effect on instructions that compute a PC-relative address, such as
'adrp,' as seen in these couple of examples:
BEFORE: adrp x0, ffff20000aa11000 <kallsyms_token_index+0xce000>
AFTER: adrp x0, kallsyms_token_index+0xce000
BEFORE: adrp x23, ffff20000ae94000 <__per_cpu_load>
AFTER: adrp x23, __per_cpu_load
The implementation is identical to that of s390, but with a slight
adjustment for objdump whitespace propagation (arm64 objdump puts spaces
after commas, whereas s390's presumably doesn't).
The mov__scnprintf() declaration is moved from s390's to arm64's
instructions.c because arm64's gets included before s390's.
Committer testing:
Ran 'perf annotate --stdio2 > /tmp/{before,after}' no diff.
Signed-off-by: Kim Phillips <kim.phillips@arm.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/20180827150807.304110d2e9919a17c832ca48@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
||
Sandipan Das
|
fa694160cc |
perf probe powerpc: Ignore SyS symbols irrespective of endianness
This makes sure that the SyS symbols are ignored for any powerpc system,
not just the big endian ones.
Reported-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Sandipan Das <sandipan@linux.ibm.com>
Reviewed-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>
Acked-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Fixes:
|
||
|
Kim Phillips
|
5ab1de932e |
perf arm64: Fix include path for asm-generic/unistd.h
The new syscall table support for arm64 mistakenly used the system's asm-generic/unistd.h file when processing the tools/arch/arm64/include/uapi/asm/unistd.h file's include directive: #include <asm-generic/unistd.h> See "Committer notes" section of commit |
||
Jiri Olsa
|
9b3579fc6c |
perf tests: Add breakpoint modify tests
Adding to tests that aims on kernel breakpoint modification bugs. First test creates HW breakpoint, tries to change it and checks it was properly changed. It aims on kernel issue that prevents HW breakpoint to be changed via ptrace interface. The first test forks, the child sets itself as ptrace tracee and waits in signal for parent to trace it, then it calls bp_1 and quits. The parent does following steps: - creates a new breakpoint (id 0) for bp_2 function - changes that breakpoint to bp_1 function - waits for the breakpoint to hit and checks it has proper rip of bp_1 function This test aims on an issue in kernel preventing to change disabled breakpoints Second test mimics the first one except for few steps in the parent: - creates a new breakpoint (id 0) for bp_1 function - changes that breakpoint to bogus (-1) address - waits for the breakpoint to hit and checks it has proper rip of bp_1 function This test aims on an issue in kernel disabling enabled breakpoint after unsuccesful change. Committer testing: # uname -a Linux jouet 4.18.0-rc8-00002-g1236568ee3cb #12 SMP Tue Aug 7 14:08:26 -03 2018 x86_64 x86_64 x86_64 GNU/Linux # perf test -v "bp modify" 62: x86 bp modify : --- start --- test child forked, pid 25671 in bp_1 tracee exited prematurely 2 FAILED arch/x86/tests/bp-modify.c:209 modify test 1 failed test child finished with -1 ---- end ---- x86 bp modify: FAILED! # Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Milind Chabbi <chabbi.milind@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180827091228.2878-2-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
||
|
Kim Phillips
|
3443533665 |
perf arm spe: Fix uninitialized record error variable
The auxtrace init variable 'err' was not being initialized, leading perf
to abort early in an SPE record command when there was no explicit
error, rather only based whatever memory contents were on the stack.
Initialize it explicitly on getting an SPE successfully, the same way
cs-etm does.
Signed-off-by: Kim Phillips <kim.phillips@arm.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Dongjiu Geng <gengdongjiu@huawei.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Fixes:
|
||
|
Jiri Olsa
|
c9b51a0170 |
perf tools: Move syscall_64.tbl check into check-headers.sh
Probably leftover from the time we introducd the check-headers.sh script. Committer testing: Remove the 'rseq' syscall from tools/perf/arch/x86/entry/syscalls/syscall_64.tbl to fake a diff: make: Entering directory '/home/acme/git/perf/tools/perf' BUILD: Doing 'make -j4' parallel build Warning: Kernel ABI header at 'tools/perf/arch/x86/entry/syscalls/syscall_64.tbl' differs from latest version at 'arch/x86/entry/syscalls/syscall_64.tbl' diff -u tools/perf/arch/x86/entry/syscalls/syscall_64.tbl arch/x86/entry/syscalls/syscall_64.tbl CC /tmp/build/perf/util/syscalltbl.o INSTALL trace_plugins <SNIP> $ diff -u tools/perf/arch/x86/entry/syscalls/syscall_64.tbl arch/x86/entry/syscalls/syscall_64.tbl --- tools/perf/arch/x86/entry/syscalls/syscall_64.tbl 2018-08-13 15:49:50.896585176 -0300 +++ arch/x86/entry/syscalls/syscall_64.tbl 2018-07-20 12:04:04.536858304 -0300 @@ -342,6 +342,7 @@ 331 common pkey_free __x64_sys_pkey_free 332 common statx __x64_sys_statx 333 common io_pgetevents __x64_sys_io_pgetevents +334 common rseq __x64_sys_rseq # # x32-specific system call numbers start at 512 to avoid cache impact $ Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Kapshuk <alexander.kapshuk@gmail.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180813111504.3568-2-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
||
|
Sandipan Das
|
354b064b8e |
perf probe powerpc: Fix trace event post-processing
In some cases, a symbol may have multiple aliases. Attempting to add an
entry probe for such symbols results in a probe being added at an
incorrect location while it fails altogether for return probes. This is
only applicable for binaries with debug information.
During the arch-dependent post-processing, the offset from the start of
the symbol at which the probe is to be attached is determined and added
to the start address of the symbol to get the probe's location. In case
there are multiple aliases, this offset gets added multiple times for
each alias of the symbol and we end up with an incorrect probe location.
This can be verified on a powerpc64le system as shown below.
$ nm /lib/modules/$(uname -r)/build/vmlinux | grep "sys_open$"
...
c000000000414290 T __se_sys_open
c000000000414290 T sys_open
$ objdump -d /lib/modules/$(uname -r)/build/vmlinux | grep -A 10 "<__se_sys_open>:"
c000000000414290 <__se_sys_open>:
c000000000414290: 19 01 4c 3c addis r2,r12,281
c000000000414294: 70 c4 42 38 addi r2,r2,-15248
c000000000414298: a6 02 08 7c mflr r0
c00000000041429c: e8 ff a1 fb std r29,-24(r1)
c0000000004142a0: f0 ff c1 fb std r30,-16(r1)
c0000000004142a4: f8 ff e1 fb std r31,-8(r1)
c0000000004142a8: 10 00 01 f8 std r0,16(r1)
c0000000004142ac: c1 ff 21 f8 stdu r1,-64(r1)
c0000000004142b0: 78 23 9f 7c mr r31,r4
c0000000004142b4: 78 1b 7e 7c mr r30,r3
For both the entry probe and the return probe, the probe location
should be _text+4276888 (0xc000000000414298). Since another alias
exists for 'sys_open', the post-processing code will end up adding
the offset (8 for powerpc64le) twice and perf will attempt to add
the probe at _text+4276896 (0xc0000000004142a0) instead.
Before:
# perf probe -v -a sys_open
probe-definition(0): sys_open
symbol:sys_open file:(null) line:0 offset:0 return:0 lazy:(null)
0 arguments
Looking at the vmlinux_path (8 entries long)
Using /lib/modules/4.18.0-rc8+/build/vmlinux for symbols
Open Debuginfo file: /lib/modules/4.18.0-rc8+/build/vmlinux
Try to find probe point from debuginfo.
Symbol sys_open address found : c000000000414290
Matched function: __se_sys_open [2ad03a0]
Probe point found: __se_sys_open+0
Found 1 probe_trace_events.
Opening /sys/kernel/debug/tracing/kprobe_events write=1
Writing event: p:probe/sys_open _text+4276896
Added new event:
probe:sys_open (on sys_open)
...
# perf probe -v -a sys_open%return $retval
probe-definition(0): sys_open%return
symbol:sys_open file:(null) line:0 offset:0 return:1 lazy:(null)
0 arguments
Looking at the vmlinux_path (8 entries long)
Using /lib/modules/4.18.0-rc8+/build/vmlinux for symbols
Open Debuginfo file: /lib/modules/4.18.0-rc8+/build/vmlinux
Try to find probe point from debuginfo.
Symbol sys_open address found : c000000000414290
Matched function: __se_sys_open [2ad03a0]
Probe point found: __se_sys_open+0
Found 1 probe_trace_events.
Opening /sys/kernel/debug/tracing/README write=0
Opening /sys/kernel/debug/tracing/kprobe_events write=1
Parsing probe_events: p:probe/sys_open _text+4276896
Group:probe Event:sys_open probe:p
Writing event: r:probe/sys_open__return _text+4276896
Failed to write event: Invalid argument
Error: Failed to add events. Reason: Invalid argument (Code: -22)
After:
# perf probe -v -a sys_open
probe-definition(0): sys_open
symbol:sys_open file:(null) line:0 offset:0 return:0 lazy:(null)
0 arguments
Looking at the vmlinux_path (8 entries long)
Using /lib/modules/4.18.0-rc8+/build/vmlinux for symbols
Open Debuginfo file: /lib/modules/4.18.0-rc8+/build/vmlinux
Try to find probe point from debuginfo.
Symbol sys_open address found : c000000000414290
Matched function: __se_sys_open [2ad03a0]
Probe point found: __se_sys_open+0
Found 1 probe_trace_events.
Opening /sys/kernel/debug/tracing/kprobe_events write=1
Writing event: p:probe/sys_open _text+4276888
Added new event:
probe:sys_open (on sys_open)
...
# perf probe -v -a sys_open%return $retval
probe-definition(0): sys_open%return
symbol:sys_open file:(null) line:0 offset:0 return:1 lazy:(null)
0 arguments
Looking at the vmlinux_path (8 entries long)
Using /lib/modules/4.18.0-rc8+/build/vmlinux for symbols
Open Debuginfo file: /lib/modules/4.18.0-rc8+/build/vmlinux
Try to find probe point from debuginfo.
Symbol sys_open address found : c000000000414290
Matched function: __se_sys_open [2ad03a0]
Probe point found: __se_sys_open+0
Found 1 probe_trace_events.
Opening /sys/kernel/debug/tracing/README write=0
Opening /sys/kernel/debug/tracing/kprobe_events write=1
Parsing probe_events: p:probe/sys_open _text+4276888
Group:probe Event:sys_open probe:p
Writing event: r:probe/sys_open__return _text+4276888
Added new event:
probe:sys_open__return (on sys_open%return)
...
Reported-by: Aneesh Kumar <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Sandipan Das <sandipan@linux.ibm.com>
Acked-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Aneesh Kumar <aneesh.kumar@linux.vnet.ibm.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Fixes:
|
||
Thomas Richter
|
b96e6615cd |
perf auxtrace: Support for perf report -D for s390
Add initial support for s390 auxiliary traces using the CPU-Measurement Sampling Facility. Support and ignore PERF_REPORT_AUXTRACE_INFO records in the perf data file. Later patches will show the contents of the auxiliary traces. Setup the auxtrace queues and data structures for s390. A raw dump of the perf.data file now does not show an error when an auxtrace event is encountered. Output before: [root@s35lp76 perf]# ./perf report -D -i perf.data.auxtrace 0x128 [0x10]: failed to process type: 70 Error: failed to process sample 0x128 [0x10]: event: 70 . . ... raw event: size 16 bytes . 0000: 00 00 00 46 00 00 00 10 00 00 00 00 00 00 00 00 ...F............ 0x128 [0x10]: PERF_RECORD_AUXTRACE_INFO type: 0 [root@s35lp76 perf]# Output after: # ./perf report -D -i perf.data.auxtrace |fgrep PERF_RECORD_AUXTRACE 0 0 0x128 [0x10]: PERF_RECORD_AUXTRACE_INFO type: 5 0 0 0x25a66 [0x30]: PERF_RECORD_AUXTRACE size: 0x40000 offset: 0 ref: 0 idx: 4 tid: -1 cpu: 4 .... Additional notes about the underlying hardware and software implementation, provided by Hendrik Brueckner (see Link: below). ============================================================================= The CPU-Measurement Facility (CPU-MF) provides a set of functions to obtain performance information on the mainframe. Basically, it was introduced with System z10 years ago for the z/Architecture, that means, 64-bit. For Linux, there are two facilities of interest, counter facility and sampling facility. The counter facility provides hardware counters for instructions, cycles, crypto-activities, and many more. The sampling facility is a hardware sampler that when started will write samples at a particular interval into a sampling buffer. At some point, for example, if a sample block is full, it generates an interrupt to collect samples (while the sampler continues to run). Few years ago, I started to provide the a perf PMU to use the counter and sampling facilities. Recently, the device driver was updated to also "export" the sampling buffer into the AUX area. Thomas now completed the related perf work to interpret and process these AUX data. If people are more interested in the sampling facility, they can have a look into: - The Load-Program-Parameter and the CPU-Measurement Facilities, SA23-2260-05 http://www-01.ibm.com/support/docview.wss?uid=isg26fcd1cc32246f4c8852574ce0044734a and to learn how-to use it for Linux on Z, have look at chapter 54, "Using the CPU-measurement facilities" in the: - Device Drivers, Features, and Commands, SC33-8411-34 http://public.dhe.ibm.com/software/dw/linux390/docu/l416dd34.pdf ============================================================================= Signed-off-by: Thomas Richter <tmricht@linux.ibm.com> Reviewed-by: Hendrik Brueckner <brueckner@linux.ibm.com> Link: http://lkml.kernel.org/r/20180803100758.GA28475@linux.ibm.com Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Link: http://lkml.kernel.org/r/20180802074622.13641-2-tmricht@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
||
|
Ingo Molnar
|
16e0e6a83b |
Merge branch 'perf/urgent' into perf/core, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org> |
||
Arnaldo Carvalho de Melo
|
44fe619b14 |
perf tools: Fix the build on the alpine:edge distro
The UAPI file byteorder/little_endian.h uses the __always_inline define without including the header where it is defined, linux/stddef.h, this ends up working in all the other distros because that file gets included seemingly by luck from one of the files included from little_endian.h. But not on Alpine:edge, that fails for all files where perf_event.h is included but linux/stddef.h isn't include before that. Adding the missing linux/stddef.h file where it breaks on Alpine:edge to fix that, in all other distros, that is just a very small header anyway. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-9r1pifftxvuxms8l7ir73p5l@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
||
|
Kim Phillips
|
2b58824356 |
perf arm64: Generate system call table from asm/unistd.h
This should speed up accessing new system calls introduced with the
kernel rather than waiting for libaudit updates to include them.
Using the existing other arch scripts resulted in this error:
tools/perf/arch/arm64/entry/syscalls//mksyscalltbl: 25: printf: __NR3264_ftruncate: expected numeric value
because, unlike other arches, asm-generic's unistd.h does things like:
#define __NR_ftruncate __NR3264_ftruncate
Turning the scripts printf's %d into a %s resulted in this in the
generated syscalls.c file:
static const char *syscalltbl_arm64[] = {
[__NR3264_ftruncate] = "ftruncate",
So we use the host C compiler to fold the macros, and print them out
from within a temporary C program, in order to get the correct output:
static const char *syscalltbl_arm64[] = {
[46] = "ftruncate",
Committer notes:
Testing this with a container with an old toolchain breaks because it
ends up using the system's /usr/include/asm-generic/unistd.h, included
from tools/arch/arm64/include/uapi/asm/unistd.h when what is desired is
for it to include tools/include/uapi/asm-generic/unistd.h.
Since all that tools/arch/arm64/include/uapi/asm/unistd.h is to set a
define and then include asm-generic/unistd.h, do that directly and use
tools/include/uapi/asm-generic/unistd.h as the file to get the syscall
definitions to expand.
Testing it:
tools/perf/arch/arm64/entry/syscalls/mksyscalltbl /gcc-linaro-5.4.1-2017.05-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-gcc gcc tools/include/uapi/asm-generic/unistd.h
Now works and generates in the syscall string table.
Before it ended up as:
$ tools/perf/arch/arm64/entry/syscalls/mksyscalltbl /gcc-linaro-5.4.1-2017.05-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-gcc gcc tools/arch/arm64/include/uapi/asm/unistd.h
static const char *syscalltbl_arm64[] = {
<stdin>: In function 'main':
<stdin>:257:38: error: '__NR_getrandom' undeclared (first use in this function)
<stdin>:257:38: note: each undeclared identifier is reported only once for each function it appears in
<stdin>:258:41: error: '__NR_memfd_create' undeclared (first use in this function)
<stdin>:259:32: error: '__NR_bpf' undeclared (first use in this function)
<stdin>:260:37: error: '__NR_execveat' undeclared (first use in this function)
tools/perf/arch/arm64/entry/syscalls/mksyscalltbl: 47: tools/perf/arch/arm64/entry/syscalls/mksyscalltbl: /tmp/create-table-60liya: Permission denied
};
$
Signed-off-by: Kim Phillips <kim.phillips@arm.com>
Reviewed-by: Hendrik Brueckner <brueckner@linux.ibm.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>
Cc: Thomas Richter <tmricht@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/r/20180706163443.22626f5e9e10e5bab5e5c662@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
||
|
Sandipan Das
|
9068533e4f |
perf powerpc: Fix callchain ip filtering when return address is in a register
For powerpc64, perf will filter out the second entry in the callchain,
i.e. the LR value, if the return address of the function corresponding
to the probed location has already been saved on its caller's stack.
The state of the return address is determined using debug information.
At any point within a function, if the return address is already saved
somewhere, a DWARF expression can tell us about its location. If the
return address in still in LR only, no DWARF expression would exist.
Typically, the instructions in a function's prologue first copy the LR
value to R0 and then pushes R0 on to the stack. If LR has already been
copied to R0 but R0 is yet to be pushed to the stack, we can still get a
DWARF expression that says that the return address is in R0. This is
indicating that getting a DWARF expression for the return address does
not guarantee the fact that it has already been saved on the stack.
This can be observed on a powerpc64le system running Fedora 27 as shown
below.
# objdump -d /usr/lib64/libc-2.26.so | less
...
000000000015af20 <inet_pton>:
15af20: 0b 00 4c 3c addis r2,r12,11
15af24: e0 c1 42 38 addi r2,r2,-15904
15af28: a6 02 08 7c mflr r0
15af2c: f0 ff c1 fb std r30,-16(r1)
15af30: f8 ff e1 fb std r31,-8(r1)
15af34: 78 1b 7f 7c mr r31,r3
15af38: 78 23 83 7c mr r3,r4
15af3c: 78 2b be 7c mr r30,r5
15af40: 10 00 01 f8 std r0,16(r1)
15af44: c1 ff 21 f8 stdu r1,-64(r1)
15af48: 28 00 81 f8 std r4,40(r1)
...
# readelf --debug-dump=frames-interp /usr/lib64/libc-2.26.so | less
...
00027024 0000000000000024 00027028 FDE cie=00000000 pc=000000000015af20..000000000015af88
LOC CFA r30 r31 ra
000000000015af20 r1+0 u u u
000000000015af34 r1+0 c-16 c-8 r0
000000000015af48 r1+64 c-16 c-8 c+16
000000000015af5c r1+0 c-16 c-8 c+16
000000000015af78 r1+0 u u
...
# perf probe -x /usr/lib64/libc-2.26.so -a inet_pton+0x18
# perf record -e probe_libc:inet_pton -g ping -6 -c 1 ::1
# perf script
Before:
ping 2829 [005] 512917.460174: probe_libc:inet_pton: (7fff7e2baf38)
7fff7e2baf38 __GI___inet_pton+0x18 (/usr/lib64/libc-2.26.so)
7fff7e2705b4 getaddrinfo+0x164 (/usr/lib64/libc-2.26.so)
12f152d70 _init+0xbfc (/usr/bin/ping)
7fff7e1836a0 generic_start_main.isra.0+0x140 (/usr/lib64/libc-2.26.so)
7fff7e183898 __libc_start_main+0xb8 (/usr/lib64/libc-2.26.so)
0 [unknown] ([unknown])
After:
ping 2829 [005] 512917.460174: probe_libc:inet_pton: (7fff7e2baf38)
7fff7e2baf38 __GI___inet_pton+0x18 (/usr/lib64/libc-2.26.so)
7fff7e26fa54 gaih_inet.constprop.7+0xf44 (/usr/lib64/libc-2.26.so)
7fff7e2705b4 getaddrinfo+0x164 (/usr/lib64/libc-2.26.so)
12f152d70 _init+0xbfc (/usr/bin/ping)
7fff7e1836a0 generic_start_main.isra.0+0x140 (/usr/lib64/libc-2.26.so)
7fff7e183898 __libc_start_main+0xb8 (/usr/lib64/libc-2.26.so)
0 [unknown] ([unknown])
Reported-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Signed-off-by: Sandipan Das <sandipan@linux.ibm.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Maynard Johnson <maynard@us.ibm.com>
Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>
Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/r/66e848a7bdf2d43b39210a705ff6d828a0865661.1530724939.git.sandipan@linux.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
||
|
Sandipan Das
|
c715fcfda5 |
perf powerpc: Fix callchain ip filtering
For powerpc64, redundant entries in the callchain are filtered out by
determining the state of the return address and the stack frame using
DWARF debug information.
For making these filtering decisions we must analyze the debug
information for the location corresponding to the program counter value,
i.e. the first entry in the callchain, and not the LR value; otherwise,
perf may filter out either the second or the third entry in the
callchain incorrectly.
This can be observed on a powerpc64le system running Fedora 27 as shown
below.
Case 1 - Attaching a probe at inet_pton+0x8 (binary offset 0x15af28).
Return address is still in LR and a new stack frame is not yet
allocated. The LR value, i.e. the second entry, should not be
filtered out.
# objdump -d /usr/lib64/libc-2.26.so | less
...
000000000010eb10 <gaih_inet.constprop.7>:
...
10fa48: 78 bb e4 7e mr r4,r23
10fa4c: 0a 00 60 38 li r3,10
10fa50: d9 b4 04 48 bl 15af28 <inet_pton+0x8>
10fa54: 00 00 00 60 nop
10fa58: ac f4 ff 4b b 10ef04 <gaih_inet.constprop.7+0x3f4>
...
0000000000110450 <getaddrinfo>:
...
1105a8: 54 00 ff 38 addi r7,r31,84
1105ac: 58 00 df 38 addi r6,r31,88
1105b0: 69 e5 ff 4b bl 10eb18 <gaih_inet.constprop.7+0x8>
1105b4: 78 1b 71 7c mr r17,r3
1105b8: 50 01 7f e8 ld r3,336(r31)
...
000000000015af20 <inet_pton>:
15af20: 0b 00 4c 3c addis r2,r12,11
15af24: e0 c1 42 38 addi r2,r2,-15904
15af28: a6 02 08 7c mflr r0
15af2c: f0 ff c1 fb std r30,-16(r1)
15af30: f8 ff e1 fb std r31,-8(r1)
...
# perf probe -x /usr/lib64/libc-2.26.so -a inet_pton+0x8
# perf record -e probe_libc:inet_pton -g ping -6 -c 1 ::1
# perf script
Before:
ping 4507 [002] 514985.546540: probe_libc:inet_pton: (7fffa7dbaf28)
7fffa7dbaf28 __GI___inet_pton+0x8 (/usr/lib64/libc-2.26.so)
7fffa7d705b4 getaddrinfo+0x164 (/usr/lib64/libc-2.26.so)
13fb52d70 _init+0xbfc (/usr/bin/ping)
7fffa7c836a0 generic_start_main.isra.0+0x140 (/usr/lib64/libc-2.26.so)
7fffa7c83898 __libc_start_main+0xb8 (/usr/lib64/libc-2.26.so)
0 [unknown] ([unknown])
After:
ping 4507 [002] 514985.546540: probe_libc:inet_pton: (7fffa7dbaf28)
7fffa7dbaf28 __GI___inet_pton+0x8 (/usr/lib64/libc-2.26.so)
7fffa7d6fa54 gaih_inet.constprop.7+0xf44 (/usr/lib64/libc-2.26.so)
7fffa7d705b4 getaddrinfo+0x164 (/usr/lib64/libc-2.26.so)
13fb52d70 _init+0xbfc (/usr/bin/ping)
7fffa7c836a0 generic_start_main.isra.0+0x140 (/usr/lib64/libc-2.26.so)
7fffa7c83898 __libc_start_main+0xb8 (/usr/lib64/libc-2.26.so)
0 [unknown] ([unknown])
Case 2 - Attaching a probe at _int_malloc+0x180 (binary offset 0x9cf10).
Return address in still in LR and a new stack frame has already
been allocated but not used. The caller's caller, i.e. the third
entry, is invalid and should be filtered out and not the second
one.
# objdump -d /usr/lib64/libc-2.26.so | less
...
000000000009cd90 <_int_malloc>:
9cd90: 17 00 4c 3c addis r2,r12,23
9cd94: 70 a3 42 38 addi r2,r2,-23696
9cd98: 26 00 80 7d mfcr r12
9cd9c: f8 ff e1 fb std r31,-8(r1)
9cda0: 17 00 e4 3b addi r31,r4,23
9cda4: d8 ff 61 fb std r27,-40(r1)
9cda8: 78 23 9b 7c mr r27,r4
9cdac: 1f 00 bf 2b cmpldi cr7,r31,31
9cdb0: f0 ff c1 fb std r30,-16(r1)
9cdb4: b0 ff c1 fa std r22,-80(r1)
9cdb8: 78 1b 7e 7c mr r30,r3
9cdbc: 08 00 81 91 stw r12,8(r1)
9cdc0: 11 ff 21 f8 stdu r1,-240(r1)
9cdc4: 4c 01 9d 41 bgt cr7,9cf10 <_int_malloc+0x180>
9cdc8: 20 00 a4 2b cmpldi cr7,r4,32
...
9cf08: 00 00 00 60 nop
9cf0c: 00 00 42 60 ori r2,r2,0
9cf10: e4 06 ff 7b rldicr r31,r31,0,59
9cf14: 40 f8 a4 7f cmpld cr7,r4,r31
9cf18: 68 05 9d 41 bgt cr7,9d480 <_int_malloc+0x6f0>
...
000000000009e3c0 <tcache_init.part.4>:
...
9e420: 40 02 80 38 li r4,576
9e424: 78 fb e3 7f mr r3,r31
9e428: 71 e9 ff 4b bl 9cd98 <_int_malloc+0x8>
9e42c: 00 00 a3 2f cmpdi cr7,r3,0
9e430: 78 1b 7e 7c mr r30,r3
...
000000000009f7a0 <__libc_malloc>:
...
9f8f8: 00 00 89 2f cmpwi cr7,r9,0
9f8fc: 1c ff 9e 40 bne cr7,9f818 <__libc_malloc+0x78>
9f900: c9 ea ff 4b bl 9e3c8 <tcache_init.part.4+0x8>
9f904: 00 00 00 60 nop
9f908: e8 90 22 e9 ld r9,-28440(r2)
...
# perf probe -x /usr/lib64/libc-2.26.so -a _int_malloc+0x180
# perf record -e probe_libc:_int_malloc -g ./test-malloc
# perf script
Before:
test-malloc 6554 [009] 515975.797403: probe_libc:_int_malloc: (7fffa6e6cf10)
7fffa6e6cf10 _int_malloc+0x180 (/usr/lib64/libc-2.26.so)
7fffa6dd0000 [unknown] (/usr/lib64/libc-2.26.so)
7fffa6e6f904 malloc+0x164 (/usr/lib64/libc-2.26.so)
7fffa6e6f9fc malloc+0x25c (/usr/lib64/libc-2.26.so)
100006b4 main+0x38 (/home/testuser/test-malloc)
7fffa6df36a0 generic_start_main.isra.0+0x140 (/usr/lib64/libc-2.26.so)
7fffa6df3898 __libc_start_main+0xb8 (/usr/lib64/libc-2.26.so)
0 [unknown] ([unknown])
After:
test-malloc 6554 [009] 515975.797403: probe_libc:_int_malloc: (7fffa6e6cf10)
7fffa6e6cf10 _int_malloc+0x180 (/usr/lib64/libc-2.26.so)
7fffa6e6e42c tcache_init.part.4+0x6c (/usr/lib64/libc-2.26.so)
7fffa6e6f904 malloc+0x164 (/usr/lib64/libc-2.26.so)
7fffa6e6f9fc malloc+0x25c (/usr/lib64/libc-2.26.so)
100006b4 main+0x38 (/home/sandipan/test-malloc)
7fffa6df36a0 generic_start_main.isra.0+0x140 (/usr/lib64/libc-2.26.so)
7fffa6df3898 __libc_start_main+0xb8 (/usr/lib64/libc-2.26.so)
0 [unknown] ([unknown])
Signed-off-by: Sandipan Das <sandipan@linux.ibm.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Maynard Johnson <maynard@us.ibm.com>
Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>
Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Fixes:
|
||
|
Thomas Richter
|
8a95c89945 |
perf kvm: Fix subcommands on s390
With commit |
||
|
Jiri Olsa
|
a09603f851 |
perf tools: Fix compilation errors on gcc8
We are getting following warnings on gcc8 that break compilation:
$ make
CC jvmti/jvmti_agent.o
jvmti/jvmti_agent.c: In function ‘jvmti_open’:
jvmti/jvmti_agent.c:252:35: error: ‘/jit-’ directive output may be truncated \
writing 5 bytes into a region of size between 1 and 4096 [-Werror=format-truncation=]
snprintf(dump_path, PATH_MAX, "%s/jit-%i.dump", jit_path, getpid());
There's no point in checking the result of snprintf call in
jvmti_open, the following open call will fail in case the
name is mangled or too long.
Using tools/lib/ function scnprintf that touches the return value from
the snprintf() calls and thus get rid of those warnings.
$ make DEBUG=1
CC arch/x86/util/perf_regs.o
arch/x86/util/perf_regs.c: In function ‘arch_sdt_arg_parse_op’:
arch/x86/util/perf_regs.c:229:4: error: ‘strncpy’ output truncated before terminating nul
copying 2 bytes from a string of the same length [-Werror=stringop-truncation]
strncpy(prefix, "+0", 2);
^~~~~~~~~~~~~~~~~~~~~~~~
Using scnprintf instead of the strncpy (which we know is safe in here)
to get rid of that warning.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20180702134202.17745-1-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
||
|
Arnaldo Carvalho de Melo
|
b1494ec029 |
perf tools: Update x86's syscall_64.tbl, adding 'io_pgetevents' and 'rseq'
This updates the tools/perf/ copy of the system call table for x86 which makes 'perf trace' become aware of the new 'io_pgetevents' and 'rseq' syscalls, no matter in which system it gets built, i.e. older systems where the syscalls are not available in the running kernel (via tracefs) or in the system headers will still be aware of these syscalls/. These are the csets introducing the source drift: |
||
|
Sandipan Das
|
143c99f6ac |
perf report powerpc: Fix crash if callchain is empty
For some cases, the callchain provided by the kernel may be empty. So,
the callchain ip filtering code will cause a crash if we do not check
whether the struct ip_callchain pointer is NULL before accessing any
members.
This can be observed on a powerpc64le system running Fedora 27 as shown
below.
# perf record -b -e cycles:u ls
Before:
# perf report --branch-history
perf: Segmentation fault
-------- backtrace --------
perf[0x1027615c]
linux-vdso64.so.1(__kernel_sigtramp_rt64+0x0)[0x7fff856304d8]
perf(arch_skip_callchain_idx+0x44)[0x10257c58]
perf[0x1017f2e4]
perf(thread__resolve_callchain+0x124)[0x1017ff5c]
perf(sample__resolve_callchain+0xf0)[0x10172788]
...
After:
# perf report --branch-history
Samples: 25 of event 'cycles:u', Event count (approx.): 2306870
Overhead Source:Line Symbol Shared Object
+ 11.60% _init+35736 [.] _init ls
+ 9.84% strcoll_l.c:137 [.] __strcoll_l libc-2.26.so
+ 9.16% memcpy.S:175 [.] __memcpy_power7 libc-2.26.so
+ 9.01% gconv_charset.h:54 [.] _nl_find_locale libc-2.26.so
+ 8.87% dl-addr.c:52 [.] _dl_addr libc-2.26.so
+ 8.83% _init+236 [.] _init ls
...
Reported-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Signed-off-by: Sandipan Das <sandipan@linux.ibm.com>
Acked-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/r/20180611104049.11048-1-sandipan@linux.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Arnaldo Carvalho de Melo
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f178fd2d49 |
perf annotate: Move objdump_path to struct annotation_options
One more step in grouping annotation options. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-sogzdhugoavm6fyw60jnb0vs@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Adrian Hunter
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a8ce99b0ee |
perf machine: Synthesize and process mmap events for x86 PTI entry trampolines
Like the kernel text, the location of x86 PTI entry trampolines must be recorded in the perf.data file. Like the kernel, synthesize a mmap event for that, and add processing for it. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: x86@kernel.org Link: http://lkml.kernel.org/r/1526986485-6562-10-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Adrian Hunter
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1c5aae7710 |
perf machine: Create maps for x86 PTI entry trampolines
Create maps for x86 PTI entry trampolines, based on symbols found in kallsyms. It is also necessary to keep track of whether the trampolines have been mapped particularly when the kernel dso is kcore. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: x86@kernel.org Link: http://lkml.kernel.org/r/1526986485-6562-9-git-send-email-adrian.hunter@intel.com [ Fix extra_kernel_map_info.cnt designed struct initializer on gcc 4.4.7 (centos:6, etc) ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Arnaldo Carvalho de Melo
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e1f2a0d0f2 |
perf map: Remove map_type arg from map_groups__find()
One more step in ditching the split. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-4pour7egur07tkrpbynawemv@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Arnaldo Carvalho de Melo
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abe5449d2d |
perf map: Shorten map_groups__find() signature
Removing the map_type, that is going away. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-18iiiw25r75xn7zlppjldk48@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Arnaldo Carvalho de Melo
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4546263d72 |
perf thread: Introduce thread__find_symbol()
Out of thread__find_addr_location(..., MAP__FUNCTION, ...), idea here is to
continue removing references to MAP__{FUNCTION,VARIABLE} ahead of
getting both types of symbols in the same rbtree, as various places do
two lookups, looking first at MAP__FUNCTION, then at MAP__VARIABLE.
So thread__find_symbol() will eventually do just that, and 'struct
symbol' will have the symbol type, for code that cares about that.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: https://lkml.kernel.org/n/tip-n7528en9e08yd3flzmb26tth@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Thomas Richter
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5d9946c3e5 |
perf record: Fix s390 undefined record__auxtrace_init() return value
Command 'perf record' calls:
cmd_report()
record__auxtrace_init()
auxtrace_record__init()
On s390 function auxtrace_record__init() returns random return value due
to missing initialization.
This sometime causes 'perf record' to exit immediately without error
message and creating a perf.data file.
Fix this by setting error the return code to zero before returning from
platform specific functions which may not set the error code in call
cases.
Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Link: http://lkml.kernel.org/r/20180423142940.21143-1-tmricht@linux.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Thomas Richter
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ce04abfbd3 |
perf list: Remove s390 specific strcmp_cpuid_cmp function
Make the type field in pmu-events/arch/s390/mapfile.cvs more generic to match the created cpuid string for s390. The pattern also checks for the counter first version number and counter second version number ([13]\.[1-5]) and the authorization field which follows. These numbers do not exist in the cpuid identification string when perf commands are executed on a z/VM environment (which does not support CPU counter measurement facility). CPUID string for LPAR: cpuid : IBM,3906,704,M03,3.5,002f CPUID string for z/VM: cpuid : IBM,2964,702,N96 This allows the removal of s390 specific cpuid compare code and uses the common compare function with its regular expression matching algorithm. Signed-off-by: Thomas Richter <tmricht@linux.ibm.com> Reviewed-by: Hendrik Brueckner <brueckner@linux.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Link: http://lkml.kernel.org/r/20180423081745.3672-1-tmricht@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Mathieu Poirier
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8a9fd83230 |
coresight: Move to SPDX identifier
Move CoreSight headers to the SPDX identifier. Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1524089118-27595-1-git-send-email-mathieu.poirier@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Ingo Molnar
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e2f73a1828 |
tools/headers: Synchronize kernel ABI headers, v4.17-rc1
Sync the following tooling headers with the latest kernel version:
tools/arch/arm/include/uapi/asm/kvm.h
- New ABI: KVM_REG_ARM_*
tools/arch/x86/include/asm/required-features.h
- Removal of NEED_LA57 dependency
tools/arch/x86/include/uapi/asm/kvm.h
- New KVM ABI: KVM_SYNC_X86_*
tools/include/uapi/asm-generic/mman-common.h
- New ABI: MAP_FIXED_NOREPLACE flag
tools/include/uapi/linux/bpf.h
- New ABI: BPF_F_SEQ_NUMBER functions
tools/include/uapi/linux/if_link.h
- New ABI: IFLA tun and rmnet support
tools/include/uapi/linux/kvm.h
- New ABI: hyperv eventfd and CONN_ID_MASK support plus header cleanups
tools/include/uapi/sound/asound.h
- New ABI: SNDRV_PCM_FORMAT_FIRST PCM format specifier
tools/perf/arch/x86/entry/syscalls/syscall_64.tbl
- The x86 system call table description changed due to the ptregs changes and the renames, in:
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Arnaldo Carvalho de Melo
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b0d5c81e87 |
perf annotate: Handle variables in 'sub', 'or' and many other instructions
Just like is done for 'mov' and others that can have as source or targets variables resolved by objdump, to make them more compact: - orb $0x4,0x224d71(%rip) # 226ca4 <_rtld_global+0xca4> + orb $0x4,_rtld_global+0xca4 Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Martin Liška <mliska@suse.cz> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com> Cc: Thomas Richter <tmricht@linux.vnet.ibm.com> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-efex7746id4w4wa03nqxvh3m@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |