linux.git/tools/perf/bench, branch v4.8-rc2

perf bench: Copy kernel files needed to build mem{cpy,set} x86_64 benchmarks

2016-07-12T18:20:32+00:00

We can't access kernel files directly from tools/, so copy the required
bits, and make sure that we detect when the original files, in the
kernel, gets modified.

Cc: Adrian Hunter 
Cc: David Ahern 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Wang Nan 
Link: http://lkml.kernel.org/n/tip-z7e76274ch5j4nugv048qacb@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf bench futex: Add missing compiler.h header

2016-07-12T18:20:30+00:00

Since these files use __maybe_unused, and that is defined in
linux/compiler.h, include it.

Cc: Adrian Hunter 
Cc: David Ahern 
Cc: Davidlohr Bueso 
Cc: Hitoshi Mitake 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Wang Nan 
Link: http://lkml.kernel.org/n/tip-1llbf59ut6xon6ti88jm0n9j@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf bench: Disentangle headers

2016-07-12T18:19:54+00:00

We should try avoiding that perf.h header, it includes way too much
stuff, making it difficult to use things like setting _GNU_SOURCE only
on a small set of headers.

Cc: Adrian Hunter 
Cc: David Ahern 
Cc: Davidlohr Bueso 
Cc: Hitoshi Mitake 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Wang Nan 
Link: http://lkml.kernel.org/n/tip-lb6eg9w1kzrwhv0gm3ho0h54@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf bench: Add missing pthread.h include for CPU_*() macros

2016-07-12T18:19:52+00:00

Cc: David Ahern 
Cc: Davidlohr Bueso 
Cc: Hitoshi Mitake 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Wang Nan 
Link: http://lkml.kernel.org/n/tip-48qbfv7tqs8n8ey74lbyfjtq@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf bench: Remove one more die() call

2016-04-26T16:28:40+00:00

Propagate the error instead.

Cc: David Ahern 
Cc: Hitoshi Mitake 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Wang Nan 
Link: http://lkml.kernel.org/n/tip-z6erjg35d1gekevwujoa0223@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf bench futex: Simplify wrapper for LOCK_PI

2016-04-25T23:24:26+00:00

Given that the 'val' parameter is ignored for FUTEX_LOCK_PI, get rid of
the bogus deadlock detection flag in the wrapper code and avoid the
extra argument, making it resemble its unlock counterpart. And if
nothing else, we already only pass 0 anyway.

Signed-off-by: Davidlohr Bueso 
Cc: Davidlohr Bueso 
Link: http://lkml.kernel.org/r/1461208447-29328-1-git-send-email-dave@stgolabs.net
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Remove needless 'extern' from function prototypes

2016-03-23T18:06:35+00:00

Cc: Adrian Hunter 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Wang Nan 
Link: http://lkml.kernel.org/n/tip-w246stf7ponfamclsai6b9zo@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Remove misplaced __maybe_unused

2016-03-23T15:03:04+00:00

All over the tree.

Cc: David Ahern 
cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Ravi Bangoria 
Link: http://lkml.kernel.org/n/tip-8nzhnokxyp8y4v7gf0j00oyb@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf bench numa: Fix assertion for nodes bitfield

2016-03-21T20:46:57+00:00

Comparing bits and bytes in numa benchmark assertion

I hit the issue on two socket Power8 machine presenting its numa nodes
as 0,1,16,17 (according to numactl). Therefore I got error (and hang of
parent process):

    perf: bench/numa.c:296: bind_to_memnode: Assertion `!(g->p.nr_nodes > (int)sizeof(nodemask))' failed.

This is obviously false positive. We can fit all the 18 nodes into
bitfield of 8 bytes (long on 64b architecture).

Signed-off-by: Jakub Jelen 
Cc: Alexander Shishkin 
Cc: Jakub Jelen 
Cc: Peter Zijlstra 
Cc: trivial@kernel.org
Link: http://lkml.kernel.org/r/1458388687-24421-1-git-send-email-jakuje@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo

perf bench mem: Prepare the x86-64 build for upstream memcpy_mcsafe() changes

2016-03-09T09:40:01+00:00

The following upcoming upstream commit:

  92b0729c34ca ("x86/mm, x86/mce: Add memcpy_mcsafe()")

Adds _ASM_EXTABLE_FAULT(), which is not available in user-space
and breaks the build.

We don't really need _ASM_EXTABLE_FAULT() in user-space, so simply
wrap it to nothing.

Cc: Arnaldo Carvalho de Melo 
Cc: David Ahern 
Cc: Hitoshi Mitake 
Cc: Jiri Olsa 
Cc: Linus Torvalds 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Cc: Thomas Gleixner 
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar