diff options
Diffstat (limited to 'tools/perf/bench/futex-wake-parallel.c')
| -rw-r--r-- | tools/perf/bench/futex-wake-parallel.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/tools/perf/bench/futex-wake-parallel.c b/tools/perf/bench/futex-wake-parallel.c index 958372ad159c..e970e6b9ad53 100644 --- a/tools/perf/bench/futex-wake-parallel.c +++ b/tools/perf/bench/futex-wake-parallel.c @@ -34,6 +34,7 @@ int bench_futex_wake_parallel(int argc __maybe_unused, const char **argv __maybe #include <err.h> #include <stdlib.h> #include <sys/time.h> +#include <sys/mman.h> struct thread_data { pthread_t worker; @@ -62,6 +63,8 @@ static const struct option options[] = { OPT_UINTEGER('w', "nwakers", ¶ms.nwakes, "Specify amount of waking threads"), OPT_BOOLEAN( 's', "silent", ¶ms.silent, "Silent mode: do not display data/details"), OPT_BOOLEAN( 'S', "shared", ¶ms.fshared, "Use shared futexes instead of private ones"), + OPT_BOOLEAN( 'm', "mlockall", ¶ms.mlockall, "Lock all current and future memory"), + OPT_END() }; @@ -239,6 +242,11 @@ int bench_futex_wake_parallel(int argc, const char **argv) act.sa_sigaction = toggle_done; sigaction(SIGINT, &act, NULL); + if (params.mlockall) { + if (mlockall(MCL_CURRENT | MCL_FUTURE)) + err(EXIT_FAILURE, "mlockall"); + } + cpu = perf_cpu_map__new(NULL); if (!cpu) err(EXIT_FAILURE, "calloc"); |