Commit Graph

507354 Commits

Author SHA1 Message Date
Arnaldo Carvalho de Melo
17e44dc46f perf target: Simplify handling of strerror_r return
To deal with forwarding the strerror_r (GNU) return we need to check if
the returned value is the buffer we passed or maybe some constant
(unknown error), simplify that action by using scnprintf, that will do
all the buflen size checks, trimming if needed.

Acked-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-d0ik6i5gjew56j0qphql28ou@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-03-24 12:08:30 -03:00
Vinson Lee
e1e455f4f4 perf tools: Work around lack of sched_getcpu in glibc < 2.6.
This patch fixes this build error with glibc < 2.6.

  CC       util/cloexec.o
cc1: warnings being treated as errors
util/cloexec.c: In function ‘perf_flag_probe’:
util/cloexec.c:24: error: implicit declaration of function
‘sched_getcpu’
util/cloexec.c:24: error: nested extern declaration of ‘sched_getcpu’
make: *** [util/cloexec.o] Error 1

Signed-off-by: Vinson Lee <vlee@twitter.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Yann Droneaud <ydroneaud@opteya.com>
Cc: stable@vger.kernel.org # 3.18+
Link: http://lkml.kernel.org/r/1427137761-16119-1-git-send-email-vlee@twopensource.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-03-24 12:08:07 -03:00
Namhyung Kim
77cfe38876 perf kmem: Print big numbers using thousands' group
Like perf stat, this makes easy to read the numbers on stat like below:

  # perf kmem stat

  SUMMARY
  =======
  Total bytes requested: 9,770,900
  Total bytes allocated: 9,782,712
  Total bytes wasted on internal fragmentation: 11,812
  Internal fragmentation: 0.120744%
  Cross CPU allocations: 74/152,819

Suggested-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Joonsoo Kim <js1304@gmail.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1427092244-22764-2-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-03-24 12:07:06 -03:00
Javi Merino
929a6bb71a tools lib traceevent: Factor out allocating and processing args
The sequence of allocating the print_arg field, calling process_arg()
and verifying that the next event delimiter is repeated twice in
process_hex() and will also be used for process_int_array().

Factor it out to a function to avoid writing the same code again and
again.

Signed-off-by: Javi Merino <javi.merino@arm.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/1426875176-30244-2-git-send-email-javi.merino@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-03-24 12:07:05 -03:00
Masami Hiramatsu
e6d7c91c8c perf probe: Fix to get ummapped symbol address on kernel
Fix to get correctly unmapped symbol address on kernel.  This allows us
to probe on syscall symbols which are aliases of SyS_ functions with
using debuginfo.

Without this fix:
  ----
  # ./perf probe -a sys_write
  Failed to find debug information for address 3b0100
  Probe point 'sys_write' not found.
    Error: Failed to add events.
  ----
The address 0x3b0100 is a mapped address, and not usable
in debuginfo.

With this fix:
  ----
  # ./perf probe -a sys_write
  Added new event:
    probe:sys_write      (on sys_write)

  You can now use it in all perf tools, such as:

          perf record -e probe:sys_write -aR sleep 1
  ----

Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/20150322114022.32639.19096.stgit@localhost.localdomain
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-03-24 12:07:04 -03:00
Yunlong Song
228f14f2cb perf tools: Remove (null) value of "Sort order" for perf mem report
When '--sort' is not set, 'perf mem report" will print a null pointer as
the output value of sort order, so fix it.

Example:

Before this patch:

 $ perf mem report
 # To display the perf.data header info, please use --header/--header-only options.
 #
 # Samples: 18  of event 'cpu/mem-loads/pp'
 # Total weight : 188
 # Sort order   : (null)
 #
 ...

After this patch:

 $ perf mem report
 # To display the perf.data header info, please use --header/--header-only options.
 #
 # Samples: 18  of event 'cpu/mem-loads/pp'
 # Total weight : 188
 # Sort order   : local_weight,mem,sym,dso,symbol_daddr,dso_daddr,snoop,tlb,locked
 #
 ...

Signed-off-by: Yunlong Song <yunlong.song@huawei.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1427082605-12881-1-git-send-email-yunlong.song@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-03-24 12:06:55 -03:00
Daniel Vetter
8218c3f4df drm: Fixup racy refcounting in plane_force_disable
Originally it was impossible to be dropping the last refcount in this
function since there was always one around still from the idr. But in

commit 83f45fc360
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Wed Aug 6 09:10:18 2014 +0200

    drm: Don't grab an fb reference for the idr

we've switched to weak references, broke that assumption but forgot to
fix it up.

Since we still force-disable planes it's only possible to hit this
when racing multiple rmfb with fbdev restoring or similar evil things.
As long as userspace is nice it's impossible to hit the BUG_ON.

But the BUG_ON would most likely be hit from fbdev code, which usually
invovles the console_lock besides all modeset locks. So very likely
we'd never get the bug reports if this was hit in the wild, hence
better be safe than sorry and backport.

Spotted by Matt Roper while reviewing other patches.

[airlied: pull this back into 4.0 - the oops happens there]

Cc: stable@vger.kernel.org
Cc: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2015-03-24 12:04:35 +10:00
Igor Mammedov
744961341d kvm: avoid page allocation failure in kvm_set_memory_region()
KVM guest can fail to startup with following trace on host:

qemu-system-x86: page allocation failure: order:4, mode:0x40d0
Call Trace:
  dump_stack+0x47/0x67
  warn_alloc_failed+0xee/0x150
  __alloc_pages_direct_compact+0x14a/0x150
  __alloc_pages_nodemask+0x776/0xb80
  alloc_kmem_pages+0x3a/0x110
  kmalloc_order+0x13/0x50
  kmemdup+0x1b/0x40
  __kvm_set_memory_region+0x24a/0x9f0 [kvm]
  kvm_set_ioapic+0x130/0x130 [kvm]
  kvm_set_memory_region+0x21/0x40 [kvm]
  kvm_vm_ioctl+0x43f/0x750 [kvm]

Failure happens when attempting to allocate pages for
'struct kvm_memslots', however it doesn't have to be
present in physically contiguous (kmalloc-ed) address
space, change allocation to kvm_kvzalloc() so that
it will be vmalloc-ed when its size is more then a page.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2015-03-23 21:23:44 -03:00
Radim Krčmář
c806a6ad35 KVM: x86: call irq notifiers with directed EOI
kvm_ioapic_update_eoi() wasn't called if directed EOI was enabled.
We need to do that for irq notifiers.  (Like with edge interrupts.)

Fix it by skipping EOI broadcast only.

Bug: https://bugzilla.kernel.org/show_bug.cgi?id=82211
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Tested-by: Bandan Das <bsd@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2015-03-23 20:29:05 -03:00
Mike Snitzer
63a4f065ec dm: fix add_disk() NULL pointer due to race with free_dev()
Commit c4db59d31e ("fs: don't reassign dirty inodes to
default_backing_dev_info") exposed DM to a latent race in free_dev() vs
add_disk() in relation to management of the device's minor number.

Fix this by refactoring free_dev() to match cleanup order of the
alloc_dev() error path.  Move cleanup of the gendisk, queue, and bdev
to _before_ the cleanup of the idr managed minor number.

Also, purely due to cleanup that fell out during the free_dev() audit:
- adjust dm_blk_close() to access the gendisk's private_data under
  the _minor_lock spinlock.
- move __dm_destroy()'s dm_get_live_table() call out from under the
  _minor_lock spinlock.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1202449

Reported-by: Zdenek Kabelac <zkabelac@redhat.com>
Reported-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2015-03-23 18:14:00 -04:00
Mark Brown
1401990e8c Merge remote-tracking branches 'regulator/fix/doc' and 'regulator/fix/palmas' into regulator-linus 2015-03-23 11:43:42 -07:00
Catalin Marinas
e53f21bce4 arm64: Use the reserved TTBR0 if context switching to the init_mm
The idle_task_exit() function may call switch_mm() with next ==
&init_mm. On arm64, init_mm.pgd cannot be used for user mappings, so
this patch simply sets the reserved TTBR0.

Cc: <stable@vger.kernel.org>
Reported-by: Jon Medhurst (Tixy) <tixy@linaro.org>
Tested-by: Jon Medhurst (Tixy) <tixy@linaro.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2015-03-23 18:42:23 +00:00
Linus Torvalds
90a5a895cc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) Validate iov ranges before feeding them into iov_iter_init(), from
    Al Viro.

 2) We changed copy_from_msghdr_from_user() to zero out the msg_namelen
    is a NULL pointer is given for the msg_name.  Do the same in the
    compat code too.  From Catalin Marinas.

 3) Fix partially initialized tuples in netfilter conntrack helper, from
    Ian Wilson.

 4) Missing continue; statement in nft_hash walker can lead to crashes,
    from Herbert Xu.

 5) tproxy_tg6_check looks for IP6T_INV_PROTO in ->flags instead of
    ->invflags, fix from Pablo Neira Ayuso.

 6) Incorrect memory account of TCP FINs can result in negative socket
    memory accounting values.  Fix from Josh Hunt.

 7) Don't allow virtual functions to enable VLAN promiscuous mode in
    be2net driver, from Vasundhara Volam.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
  netfilter: nft_compat: set IP6T_F_PROTO flag if protocol is set
  cx82310_eth: wait for firmware to become ready
  net: validate the range we feed to iov_iter_init() in sys_sendto/sys_recvfrom
  net: compat: Update get_compat_msghdr() to match copy_msghdr_from_user() behaviour
  be2net: use PCI MMIO read instead of config read for errors
  be2net: restrict MODIFY_EQ_DELAY cmd to a max of 8 EQs
  be2net: Prevent VFs from enabling VLAN promiscuous mode
  tcp: fix tcp fin memory accounting
  ipv6: fix backtracking for throw routes
  net: ethernet: pcnet32: Setup the SRAM and NOUFLO on Am79C97{3, 5}
  ipv6: call ipv6_proxy_select_ident instead of ipv6_select_ident in udp6_ufo_fragment
  netfilter: xt_TPROXY: fix invflags check in tproxy_tg6_check()
  netfilter: restore rule tracing via nfnetlink_log
  netfilter: nf_tables: allow to change chain policy without hook if it exists
  netfilter: Fix potential crash in nft_hash walker
  netfilter: Zero the tuple in nfnl_cthelper_parse_tuple()
2015-03-23 10:16:13 -07:00
Linus Torvalds
d5049617a0 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc
Pull sparc fixes from David Miller:
 "Some perf bug fixes from David Ahern, and the fix for that nasty
  memmove() bug"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
  sparc64: Fix several bugs in memmove().
  sparc: Touch NMI watchdog when walking cpus and calling printk
  sparc: perf: Add support M7 processor
  sparc: perf: Make counting mode actually work
  sparc: perf: Remove redundant perf_pmu_{en|dis}able calls
2015-03-23 10:04:02 -07:00
Sebastian Wicki
80b311d311 ALSA: hda - Add dock support for Thinkpad T450s (17aa:5036)
This model uses the same dock port as the previous generation.

Signed-off-by: Sebastian Wicki <gandro@gmx.net>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-03-23 17:39:20 +01:00
David S. Miller
2077cef4d5 sparc64: Fix several bugs in memmove().
Firstly, handle zero length calls properly.  Believe it or not there
are a few of these happening during early boot.

Next, we can't just drop to a memcpy() call in the forward copy case
where dst <= src.  The reason is that the cache initializing stores
used in the Niagara memcpy() implementations can end up clearing out
cache lines before we've sourced their original contents completely.

For example, considering NG4memcpy, the main unrolled loop begins like
this:

     load   src + 0x00
     load   src + 0x08
     load   src + 0x10
     load   src + 0x18
     load   src + 0x20
     store  dst + 0x00

Assume dst is 64 byte aligned and let's say that dst is src - 8 for
this memcpy() call.  That store at the end there is the one to the
first line in the cache line, thus clearing the whole line, which thus
clobbers "src + 0x28" before it even gets loaded.

To avoid this, just fall through to a simple copy only mildly
optimized for the case where src and dst are 8 byte aligned and the
length is a multiple of 8 as well.  We could get fancy and call
GENmemcpy() but this is good enough for how this thing is actually
used.

Reported-by: David Ahern <david.ahern@oracle.com>
Reported-by: Bob Picco <bpicco@meloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-23 09:22:10 -07:00
Jiri Olsa
2c7da8c590 perf annotate: Allow annotation for decompressed kernel modules
Decompressing kernel module file for objdump command if needed.
Annotation commands now display annotation for compressed kernel
modules.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-x4jcytk2d5qjmnjvb0w75q3f@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-03-23 12:49:27 -03:00
Jiri Olsa
bc84f46486 perf tools: Try to lookup kernel module map before creating one
Currently we assume machine__new_module is called only once for each
module so we create its map&dso unconditionally.

However it's possible that it's called multiple times for same module.
Like for perf record:

  1) via machine__create_module during machine init
  2) via kernel MMAP event processing

Trying to lookup kernel module map before creating one.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-kx76xfqpnrpho5hdaapbqm09@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-03-23 12:46:51 -03:00
Jiri Olsa
907fb509f0 perf tools: Remove is_kmodule_extension function
Because it's no longer needed.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-bb84vlg76t78q8y8fdeed2qn@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-03-23 12:40:15 -03:00
Jiri Olsa
e746b3ea0d perf tools: Remove compressed argument from is_kernel_module
We no longer need the 'compressed' argument, because all
current users use 'NULL' for it.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-d72q2s7ggbmy2yzhumux4zzw@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-03-23 12:39:30 -03:00
Jiri Olsa
8dee9ff110 perf tools: Use kmod_path__parse in is_kernel_module
Replacing the current parsing code with kmod_path__parse function call.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-r9mpbbgkp39wp1cdmv13ddq0@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-03-23 12:38:37 -03:00
Jiri Olsa
914f85c4a2 perf tools: Use kmod_path__parse in decompress_kmodule
Replacing the file name parsing with kmod_path__parse.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-zpyyitlte7lwe2ywi51rj4n5@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-03-23 12:37:17 -03:00
Tejun Heo
c72efb658f writeback: fix possible underflow in write bandwidth calculation
From 1ebf33901ecc75d9496862dceb1ef0377980587c Mon Sep 17 00:00:00 2001
From: Tejun Heo <tj@kernel.org>
Date: Mon, 23 Mar 2015 00:08:19 -0400

2f800fbd77 ("writeback: fix dirtied pages accounting on redirty")
introduced account_page_redirty() which reverts stat updates for a
redirtied page, making BDI_DIRTIED no longer monotonically increasing.

bdi_update_write_bandwidth() uses the delta in BDI_DIRTIED as the
basis for bandwidth calculation.  While unlikely, since the above
patch, the newer value may be lower than the recorded past value and
underflow the bandwidth calculation leading to a wild result.

Fix it by subtracing min of the old and new values when calculating
delta.  AFAIK, there hasn't been any report of it happening but the
resulting erratic behavior would be non-critical and temporary, so
it's possible that the issue is happening without being reported.  The
risk of the fix is very low, so tagged for -stable.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Jan Kara <jack@suse.cz>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: Greg Thelen <gthelen@google.com>
Fixes: 2f800fbd77 ("writeback: fix dirtied pages accounting on redirty")
Cc: stable@vger.kernel.org
Signed-off-by: Jens Axboe <axboe@fb.com>
2015-03-23 09:35:58 -06:00
Keith Busch
e6e96d73a2 NVMe: Initialize device list head before starting
Driver recovery requires the device's list node to have been initialized.

Fixes: https://lkml.org/lkml/2015/3/22/262

Reported-by: Steven Noonan <steven@uplinklabs.net>
Signed-off-by: Keith Busch <keith.busch@intel.com>
Cc: Matthew Wilcox <willy@linux.intel.com>
Cc: Jens Axboe <axboe@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
2015-03-23 09:35:12 -06:00
Jiri Olsa
bb58a8a459 perf tools: Use kmod_path__parse in map_groups__set_modules_path_dir
Replacing the file name parsing with kmod_path__parse
and moving the dso update into new separate function.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-q0ed76ajcyoaofotntrg5sla@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-03-23 11:43:25 -03:00
James Hogan
0164a711c9 metag: Fix ioremap_wc/ioremap_cached build errors
When ioremap_wc() or ioremap_cached() are used without first including
asm/pgtable.h, the _PAGE_CACHEABLE or _PAGE_WR_COMBINE definitions
aren't found, resulting in build errors like the following (in
next-20150323 due to "lib: devres: add a helper function for
ioremap_wc"):

lib/devres.c: In function ‘devm_ioremap_wc’:
lib/devres.c:91: error: ‘_PAGE_WR_COMBINE’ undeclared

We can't easily include asm/pgtable.h in asm/io.h due to dependency
problems, so split out the _PAGE_* definitions from asm/pgtable.h into a
separate asm/pgtable-bits.h header (as a couple of other architectures
already do), and include that in io.h instead.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-metag@vger.kernel.org
Cc: Abhilash Kesavan <a.kesavan@samsung.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-23 12:32:37 +00:00
Helge Deller
2e3f0ab2bb parisc: Fix pmd code to depend on PT_NLEVELS value, not on CONFIG_64BIT
Make the code which sets up the pmd depend on PT_NLEVELS == 3, not on
CONFIG_64BIT. The reason is, that a 64bit kernel with a page size
greater than 4k doesn't need the pmd and thus has PT_NLEVELS = 2.

Signed-off-by: Helge Deller <deller@gmx.de>
2015-03-23 12:28:16 +01:00
Mikulas Patocka
0e0da48dee parisc: mm: don't count preallocated pmds
The patch dc6c9a35b6 that counts pmds
allocated for a process introduced a bug on 64-bit PA-RISC kernels.

The PA-RISC architecture preallocates one pmd with each pgd. This
preallocated pmd can never be freed - pmd_free does nothing when it is
called with this pmd. When the kernel attempts to free this preallocated
pmd, it decreases the count of allocated pmds. The result is that the
counter underflows and this error is reported.

This patch fixes the bug by artifically incrementing the counter in
pmd_free when the kernel tries to free the preallocated pmd.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Helge Deller <deller@gmx.de>
2015-03-23 12:28:15 +01:00
Peter Zijlstra
50f16a8bf9 perf: Remove type specific target pointers
The only reason CQM had to use a hard-coded pmu type was so it could use
cqm_target in hw_perf_event.

Do away with the {tp,bp,cqm}_target pointers and provide a non type
specific one.

This allows us to do away with that silly pmu type as well.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Vince Weaver <vince@deater.net>
Cc: acme@kernel.org
Cc: acme@redhat.com
Cc: hpa@zytor.com
Cc: jolsa@redhat.com
Cc: kanaka.d.juvva@intel.com
Cc: matt.fleming@intel.com
Cc: tglx@linutronix.de
Cc: torvalds@linux-foundation.org
Cc: vikas.shivappa@linux.intel.com
Link: http://lkml.kernel.org/r/20150305211019.GU21418@twins.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-23 10:58:04 +01:00
Matt Fleming
4e16ed9941 perf/x86/intel: Fix Makefile to actually build the cqm driver
Someone fat fingered a merge conflict and lost the Makefile hunk.

Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: <acme@redhat.com>
Cc: <hpa@zytor.com>
Cc: <jolsa@redhat.com>
Cc: <kanaka.d.juvva@intel.com>
Cc: <tglx@linutronix.de>
Cc: <torvalds@linux-foundation.org>
Cc: <vikas.shivappa@linux.intel.com>
Link: http://lkml.kernel.org/r/1424976420.15321.35.camel@mfleming-mobl1.ger.corp.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-23 10:58:03 +01:00
Helge Deller
47514da3ac parisc: Add compile-time check when adding new syscalls
Signed-off-by: Helge Deller <deller@gmx.de>
2015-03-23 10:57:25 +01:00
Preeti U Murthy
a127d2bcf1 timers/tick/broadcast-hrtimer: Fix suspicious RCU usage in idle loop
The hrtimer mode of broadcast queues hrtimers in the idle entry
path so as to wakeup cpus in deep idle states. The associated
call graph is :

	cpuidle_idle_call()
	|____ clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_ENTER, ....))
	     |_____tick_broadcast_set_event()
		   |____clockevents_program_event()
			|____bc_set_next()

The hrtimer_{start/cancel} functions call into tracing which uses RCU.
But it is not legal to call into RCU in cpuidle because it is one of the
quiescent states. Hence protect this region with RCU_NONIDLE which informs
RCU that the cpu is momentarily non-idle.

As an aside it is helpful to point out that the clock event device that is
programmed here is not a per-cpu clock device; it is a
pseudo clock device, used by the broadcast framework alone.
The per-cpu clock device programming never goes through bc_set_next().

Signed-off-by: Preeti U Murthy <preeti@linux.vnet.ibm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: linuxppc-dev@ozlabs.org
Cc: mpe@ellerman.id.au
Cc: tglx@linutronix.de
Link: http://lkml.kernel.org/r/20150318104705.17763.56668.stgit@preeti.in.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-23 10:50:05 +01:00
Peter Zijlstra
35a9393c95 lockdep: Fix the module unload key range freeing logic
Module unload calls lockdep_free_key_range(), which removes entries
from the data structures. Most of the lockdep code OTOH assumes the
data structures are append only; in specific see the comments in
add_lock_to_list() and look_up_lock_class().

Clearly this has only worked by accident; make it work proper. The
actual scenario to make it go boom would involve the memory freed by
the module unlock being re-allocated and re-used for a lock inside of
a rcu-sched grace period. This is a very unlikely scenario, still
better plug the hole.

Use RCU list iteration in all places and ammend the comments.

Change lockdep_free_key_range() to issue a sync_sched() between
removal from the lists and returning -- which results in the memory
being freed. Further ensure the callers are placed correctly and
comment the requirements.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andrey Tsyvarev <tsyvarev@ispras.ru>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-23 10:49:07 +01:00
Brian Silverman
746db9443e sched: Fix RLIMIT_RTTIME when PI-boosting to RT
When non-realtime tasks get priority-inheritance boosted to a realtime
scheduling class, RLIMIT_RTTIME starts to apply to them. However, the
counter used for checking this (the same one used for SCHED_RR
timeslices) was not getting reset. This meant that tasks running with a
non-realtime scheduling class which are repeatedly boosted to a realtime
one, but never block while they are running realtime, eventually hit the
timeout without ever running for a time over the limit. This patch
resets the realtime timeslice counter when un-PI-boosting from an RT to
a non-RT scheduling class.

I have some test code with two threads and a shared PTHREAD_PRIO_INHERIT
mutex which induces priority boosting and spins while boosted that gets
killed by a SIGXCPU on non-fixed kernels but doesn't with this patch
applied. It happens much faster with a CONFIG_PREEMPT_RT kernel, and
does happen eventually with PREEMPT_VOLUNTARY kernels.

Signed-off-by: Brian Silverman <brian@peloton-tech.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: austin@peloton-tech.com
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/1424305436-6716-1-git-send-email-brian@peloton-tech.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-23 10:47:55 +01:00
Peter Zijlstra
d525211f9d perf: Fix irq_work 'tail' recursion
Vince reported a watchdog lockup like:

	[<ffffffff8115e114>] perf_tp_event+0xc4/0x210
	[<ffffffff810b4f8a>] perf_trace_lock+0x12a/0x160
	[<ffffffff810b7f10>] lock_release+0x130/0x260
	[<ffffffff816c7474>] _raw_spin_unlock_irqrestore+0x24/0x40
	[<ffffffff8107bb4d>] do_send_sig_info+0x5d/0x80
	[<ffffffff811f69df>] send_sigio_to_task+0x12f/0x1a0
	[<ffffffff811f71ce>] send_sigio+0xae/0x100
	[<ffffffff811f72b7>] kill_fasync+0x97/0xf0
	[<ffffffff8115d0b4>] perf_event_wakeup+0xd4/0xf0
	[<ffffffff8115d103>] perf_pending_event+0x33/0x60
	[<ffffffff8114e3fc>] irq_work_run_list+0x4c/0x80
	[<ffffffff8114e448>] irq_work_run+0x18/0x40
	[<ffffffff810196af>] smp_trace_irq_work_interrupt+0x3f/0xc0
	[<ffffffff816c99bd>] trace_irq_work_interrupt+0x6d/0x80

Which is caused by an irq_work generating new irq_work and therefore
not allowing forward progress.

This happens because processing the perf irq_work triggers another
perf event (tracepoint stuff) which in turn generates an irq_work ad
infinitum.

Avoid this by raising the recursion counter in the irq_work -- which
effectively disables all software events (including tracepoints) from
actually triggering again.

Reported-by: Vince Weaver <vincent.weaver@maine.edu>
Tested-by: Vince Weaver <vincent.weaver@maine.edu>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/20150219170311.GH21418@twins.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-23 10:46:32 +01:00
Mahesh Salgaonkar
44d5f6f590 powerpc/book3s: Fix the MCE code to use CONFIG_KVM_BOOK3S_64_HANDLER
commit id 2ba9f0d has changed CONFIG_KVM_BOOK3S_64_HV to tristate to allow
HV/PR bits to be built as modules. But the MCE code still depends on
CONFIG_KVM_BOOK3S_64_HV which is wrong. When user selects
CONFIG_KVM_BOOK3S_64_HV=m to build HV/PR bits as a separate module the
relevant MCE code gets excluded.

This patch fixes the MCE code to use CONFIG_KVM_BOOK3S_64_HANDLER. This
makes sure that the relevant MCE code is included when HV/PR bits
are built as a separate modules.

Fixes: 2ba9f0d887 ("kvm: powerpc: book3s: Support building HV and PR KVM as module")
Cc: stable@vger.kernel.org  # v3.14+
Signed-off-by: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>
Acked-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-03-23 17:10:47 +11:00
Linus Torvalds
bc465aa9d0 Linux 4.0-rc5 2015-03-22 16:50:21 -07:00
Linus Torvalds
1b717b1af5 One fix for md in 4.0-rc4
Regression in recent patch causes crash on error path.
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Merge tag 'md/4.0-rc4-fix' of git://neil.brown.name/md

Pull bugfix for md from Neil Brown:
 "One fix for md in 4.0-rc4

  Regression in recent patch causes crash on error path"

* tag 'md/4.0-rc4-fix' of git://neil.brown.name/md:
  md: fix problems with freeing private data after ->run failure.
2015-03-22 16:38:19 -07:00
David S. Miller
c0e41fa76c Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf
Pablo Neira Ayuso says:

====================
Netfilter fixes for net

The following patchset contains Netfilter fixes for your net tree,
they are:

1) Fix missing initialization of tuple structure in nfnetlink_cthelper
   to avoid mismatches when looking up to attach userspace helpers to
   flows, from Ian Wilson.

2) Fix potential crash in nft_hash when we hit -EAGAIN in
   nft_hash_walk(), from Herbert Xu.

3) We don't need to indicate the hook information to update the
   basechain default policy in nf_tables.

4) Restore tracing over nfnetlink_log due to recent rework to
   accomodate logging infrastructure into nf_tables.

5) Fix wrong IP6T_INV_PROTO check in xt_TPROXY.

6) Set IP6T_F_PROTO flag in nft_compat so we can use SYNPROXY6 and
   REJECT6 from xt over nftables.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-22 16:57:07 -04:00
Linus Torvalds
4541c22605 Driver core fixes for 4.0-rc5
Here are two bugfixes for things reported.  One regression in kernfs,
 and another issue fixed in the LZ4 code that was fixed in the "upstream"
 codebase that solves a reported kernel crash.
 
 Both have been in linux-next for a while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-4.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core fixes from Greg KH:
 "Here are two bugfixes for things reported.  One regression in kernfs,
  and another issue fixed in the LZ4 code that was fixed in the
  "upstream" codebase that solves a reported kernel crash

  Both have been in linux-next for a while"

* tag 'driver-core-4.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  LZ4 : fix the data abort issue
  kernfs: handle poll correctly on 'direct_read' files.
2015-03-22 12:07:47 -07:00
Linus Torvalds
b93dbeea7b Char/MISC fixes for 4.0-rc5
Here are three fixes for 4.0-rc5 that revert 3 PCMCIA patches that were
 merged in 4.0-rc1 that cause regressions.  So let's revert them for now
 and they will be reworked and resent sometime in the future.
 
 All have been tested in linux-next for a while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-4.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc fixes from Greg KH:
 "Here are three fixes for 4.0-rc5 that revert 3 PCMCIA patches that
  were merged in 4.0-rc1 that cause regressions.  So let's revert them
  for now and they will be reworked and resent sometime in the future.

  All have been tested in linux-next for a while"

* tag 'char-misc-4.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  Revert "pcmcia: add a new resource manager for non ISA systems"
  Revert "pcmcia: fix incorrect bracketing on a test"
  Revert "pcmcia: add missing include for new pci resource handler"
2015-03-22 12:03:14 -07:00
Linus Torvalds
704fa7f76f Staging driver fixes for 4.0-rc5
Here are 4 small staging driver fixes, all for the vt6656 and vt6655
 drivers, that resolve some reported issues with them.
 
 All of these patches have been in linux next for a while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-4.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging driver fixes from Greg KH:
 "Here are four small staging driver fixes, all for the vt6656 and
  vt6655 drivers, that resolve some reported issues with them.

  All of these patches have been in linux next for a while"

* tag 'staging-4.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  vt6655: Fix late setting of byRFType.
  vt6655: RFbSetPower fix missing rate RATE_12M
  staging: vt6656: vnt_rf_setpower: fix missing rate RATE_12M
  staging: vt6655: vnt_tx_packet fix dma_idx selection.
2015-03-22 11:59:02 -07:00
Linus Torvalds
b2f45eeff2 TTY/Serial driver fix for 4.0-rc5
Here's a single 8250 serial driver that fixes a reported deadlock with
 the serial console and the tty driver.
 
 It's been in linux-next for a while now.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-4.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty/serial driver fix from Greg KH:
 "Here's a single 8250 serial driver that fixes a reported deadlock with
  the serial console and the tty driver.

  It's been in linux-next for a while now"

* tag 'tty-4.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  serial: 8250_dw: Fix deadlock in LCR workaround
2015-03-22 11:54:29 -07:00
Linus Torvalds
cedd5f659e USB / PHY driver fixes for 4.0-rc5
Here's a number of USB and PHY driver fixes for 4.0-rc5.  Largest thing
 here is a revert of a gadget function driver patch that removes 500
 lines of code.  Other than that, it's a number of reported bugs fixes
 and new quirk/id entries.
 
 All have been in linux-next for a while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-4.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB / PHY driver fixes from Greg KH:
 "Here's a number of USB and PHY driver fixes for 4.0-rc5.

  The largest thing here is a revert of a gadget function driver patch
  that removes 500 lines of code.  Other than that, it's a number of
  reported bugs fixes and new quirk/id entries.

  All have been in linux-next for a while"

* tag 'usb-4.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (33 commits)
  usb: common: otg-fsm: only signal connect after switching to peripheral
  uas: Add US_FL_NO_ATA_1X for Initio Corporation controllers / devices
  USB: ehci-atmel: rework clk handling
  MAINTAINERS: add entry for USB OTG FSM
  usb: chipidea: otg: add a_alt_hnp_support response for B device
  phy: omap-usb2: Fix missing clk_prepare call when using old dt name
  phy: ti/omap: Fix modalias
  phy: core: Fixup return value of phy_exit when !pm_runtime_enabled
  phy: miphy28lp: Convert to devm_kcalloc and fix wrong sizof
  phy: miphy365x: Convert to devm_kcalloc and fix wrong sizeof
  phy: twl4030-usb: Remove redundant assignment for twl->linkstat
  phy: exynos5-usbdrd: Fix off-by-one valid value checking for args->args[0]
  phy: Find the right match in devm_phy_destroy()
  phy: rockchip-usb: Fixup rockchip_usb_phy_power_on failure path
  phy: ti-pipe3: Simplify ti_pipe3_dpll_wait_lock implementation
  phy: samsung-usb2: Remove NULL terminating entry from phys array
  phy: hix5hd2-sata: Check return value of platform_get_resource
  phy: exynos-dp-video: Kill exynos_dp_video_phy_pwr_isol function
  Revert "usb: gadget: zero: Add support for interrupt EP"
  Revert "xhci: Clear the host side toggle manually when endpoint is 'soft reset'"
  ...
2015-03-22 11:33:55 -07:00
Pablo Neira Ayuso
749177ccc7 netfilter: nft_compat: set IP6T_F_PROTO flag if protocol is set
ip6tables extensions check for this flag to restrict match/target to a
given protocol. Without this flag set, SYNPROXY6 returns an error.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Acked-by: Patrick McHardy <kaber@trash.net>
2015-03-22 19:32:05 +01:00
Ingo Molnar
963a70b8a2 perf/core improvements and fixes:
- Handle legacy syscalls tracepoints (David Ahern, Arnaldo Carvalho de Melo)
 
 - Indicate which callchain entries are annotated in the
   TUI hists browser (report/top) (Arnaldo Carvalho de Melo)
 
 - Fix failure to add multiple probes without debuginfo (He Kuang)
 
 - Fix 'trace' summary_only option (David Ahern)
 
 - Fix race in build_id_cache__add_s() in 'buildid-cache' (Milos Vyletel)
 
 - Don't allow empty argument for field-separator, fixing segfault (Wang Nan)
 
 Infrastructure:
 
 - Add destructor for format_field in libtraceevent (David Ahern)
 
 - Prep work for support lzma compressed kernel modules (Jiri Olsa)
 
 - Update .gitignore with recently added/renamed feature detection files (Yunlong Song)
 
 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-core-for-mingo-2' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core

Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:

  - Handle legacy syscalls tracepoints (David Ahern, Arnaldo Carvalho de Melo)

  - Indicate which callchain entries are annotated in the
    TUI hists browser (report/top) (Arnaldo Carvalho de Melo)

  - Fix failure to add multiple probes without debuginfo (He Kuang)

  - Fix 'trace' summary_only option (David Ahern)

  - Fix race in build_id_cache__add_s() in 'buildid-cache' (Milos Vyletel)

  - Don't allow empty argument for field-separator, fixing segfault (Wang Nan)

Infrastructure:

  - Add destructor for format_field in libtraceevent (David Ahern)

  - Prep work for support lzma compressed kernel modules (Jiri Olsa)

  - Update .gitignore with recently added/renamed feature detection files (Yunlong Song)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-22 10:56:19 +01:00
Ingo Molnar
08b3f91390 perf/core improvements and fixes:
User visible:
 
 - Bash completion for subcommands (Yunlong Song)
 
 - Allow annotating entries in callchains in the hists browser (top/report).
   TODO: give some visual cue to what entries in callchains have samples and thus
   can be annotated and/or allow showing the source code for functions without
   samples (Arnaldo Carvalho de Melo)
 
 - Don't allow empty argument for '-t' in perf report, fixing segfault (Wang Nan)
 
 Infrastructure:
 
 - Prep work for moving the perf feature tests build system to tools/build (Jiri Olsa)
 
 - Fix perf-read-vdsox32 not building and lib64 install dir (H.J. Lu)
 
 - ARM64: fix building error and eh/debug frame offset cache fixes (Wang Nan)
 
 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core

Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:

User visible changes:

  - Bash completion for subcommands (Yunlong Song)

  - Allow annotating entries in callchains in the hists browser (top/report).
    TODO: give some visual cue to what entries in callchains have samples and thus
    can be annotated and/or allow showing the source code for functions without
    samples (Arnaldo Carvalho de Melo)

  - Don't allow empty argument for '-t' in perf report, fixing segfault (Wang Nan)

Infrastructure:

  - Prep work for moving the perf feature tests build system to tools/build (Jiri Olsa)

  - Fix perf-read-vdsox32 not building and lib64 install dir (H.J. Lu)

  - ARM64: fix building error and eh/debug frame offset cache fixes (Wang Nan)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-22 10:54:44 +01:00
Ondrej Zary
f40bff4239 cx82310_eth: wait for firmware to become ready
When the device is powered up, some (older) firmware versions fail to work
properly if we send commands before the boot is complete (everything is OK
when the device is hot-plugged). The firmware indicates its ready status by
putting the link up.
Newer firmwares delay the first command so they don't suffer from this problem.
They also report the link being always up.

Wait for firmware to become ready (link up) before sending any commands and/or
data.

This also allows lowering CMD_TIMEOUT value to a reasonable time.

Tested with 4.1.0.9 (old) and 4.1.0.30 (new) firmware versions.

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-21 18:23:19 -04:00
Linus Torvalds
f897522468 Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma
Pull slave dmaengine fixes from Vinod Koul:
 "Four fixes for dw, pl08x, imx-sdma and at_hdmac driver.  Nothing
  unusual here, simple fixes to these drivers"

* 'fixes' of git://git.infradead.org/users/vkoul/slave-dma:
  dmaengine: pl08x: Define capabilities for generic capabilities reporting
  dmaengine: dw: append MODULE_ALIAS for platform driver
  dmaengine: imx-sdma: switch to dynamic context mode after script loaded
  dmaengine: at_hdmac: Fix calculation of the residual bytes
2015-03-21 13:05:37 -07:00
Linus Torvalds
3d7a6db537 Power management and ACPI fixes for v4.0-rc5
- Revert a recent PCI commit related to IRQ resources management
    that introduced a regression for drivers attempting to bind to
    devices whose previous drivers did not balance pci_enable_device()
    and pci_disable_device() as expected (Rafael J Wysocki).
 
  - Fix a deadlock in at91_rtc_interrupt() introduced by a typo in a
    recent commit related to wakeup interrupt handling (Dan Carpenter).
 
  - Allow the power capping RAPL (Running-Average Power Limit) driver
    to use different energy units for domains within one CPU package
    which is necessary to handle Intel Haswell EP processors correctly
    (Jacob Pan).
 
  - Improve the cpuidle mvebu driver's handling of Armada XP SoCs by
    updating the target residency and exit latency numbers for those
    chips (Sebastien Rannou).
 
  - Prevent the cpuidle mvebu driver from calling cpu_pm_enter() twice
    in a row before cpu_pm_exit() is called on the same CPU which
    breaks the core's assumptions regarding the usage of those
    functions (Gregory Clement).
 
 /
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Merge tag 'pm+acpi-4.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management and ACPI fixes from Rafael Wysocki:
 "These are fixes for recent regressions (PCI/ACPI resources and at91
  RTC locking), a stable-candidate powercap RAPL driver fix and two ARM
  cpuidle fixes (one stable-candidate too).

  Specifics:

   - Revert a recent PCI commit related to IRQ resources management that
     introduced a regression for drivers attempting to bind to devices
     whose previous drivers did not balance pci_enable_device() and
     pci_disable_device() as expected (Rafael J Wysocki).

   - Fix a deadlock in at91_rtc_interrupt() introduced by a typo in a
     recent commit related to wakeup interrupt handling (Dan Carpenter).

   - Allow the power capping RAPL (Running-Average Power Limit) driver
     to use different energy units for domains within one CPU package
     which is necessary to handle Intel Haswell EP processors correctly
     (Jacob Pan).

   - Improve the cpuidle mvebu driver's handling of Armada XP SoCs by
     updating the target residency and exit latency numbers for those
     chips (Sebastien Rannou).

   - Prevent the cpuidle mvebu driver from calling cpu_pm_enter() twice
     in a row before cpu_pm_exit() is called on the same CPU which
     breaks the core's assumptions regarding the usage of those
     functions (Gregory Clement)"

* tag 'pm+acpi-4.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  Revert "x86/PCI: Refine the way to release PCI IRQ resources"
  rtc: at91rm9200: double locking bug in at91_rtc_interrupt()
  powercap / RAPL: handle domains with different energy units
  cpuidle: mvebu: Update cpuidle thresholds for Armada XP SOCs
  cpuidle: mvebu: Fix the CPU PM notifier usage
2015-03-21 12:51:36 -07:00