Commits
Davidlohr Bueso committed 3b2323c2c1c
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>