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3b2323c2c1
linux/tools/perf/bench
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Davidlohr Bueso 3b2323c2c1 perf bench futex: Use cpumaps 
It was reported that the whole futex bench breaks when dealing with
non-contiguously numbered cpus.

$ echo 0 | sudo tee /sys/devices/system/cpu/cpu3/online
$ ./perf bench futex all
 perf: pthread_create: Operation not permitted
 Run summary [PID 14934]: 7 threads, each ....

James had implemented an approach with cpumaps that use an in house
flavor. Instead of re-inventing the wheel, I've redone the patch such
that we use the perf's util/cpumap.c interface instead.

Applies to all futex benchmarks.

Suggested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Originally-from: James Yang <james.yang@arm.com>
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Cc: Davidlohr Bueso <dbueso@suse.de>
Cc: Kim Phillips <kim.phillips@arm.com>
Link: http://lkml.kernel.org/r/20171127042101.3659-2-dave@stgolabs.net
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-11-30 14:02:05 -03:00
..
bench.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Build perf bench: Rename 'mem-memcpy.c' => 'mem-functions.c' 2015-10-19 15:39:39 -03:00
futex-hash.c perf bench futex: Use cpumaps 2017-11-30 14:02:05 -03:00
futex-lock-pi.c perf bench futex: Use cpumaps 2017-11-30 14:02:05 -03:00
futex-requeue.c perf bench futex: Use cpumaps 2017-11-30 14:02:05 -03:00
futex-wake-parallel.c perf bench futex: Use cpumaps 2017-11-30 14:02:05 -03:00
futex-wake.c perf bench futex: Use cpumaps 2017-11-30 14:02:05 -03:00
futex.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mem-functions.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mem-memcpy-arch.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mem-memcpy-x86-64-asm-def.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mem-memcpy-x86-64-asm.S License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mem-memset-arch.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mem-memset-x86-64-asm-def.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mem-memset-x86-64-asm.S License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
numa.c perf bench numa: Fixup discontiguous/sparse numa nodes 2017-11-28 14:28:10 -03:00
sched-messaging.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
sched-pipe.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00