diff options
Diffstat (limited to 'tools/perf/bench/futex-hash.c')
| -rw-r--r-- | tools/perf/bench/futex-hash.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/tools/perf/bench/futex-hash.c b/tools/perf/bench/futex-hash.c index ddca7558e559..fcdea3e44937 100644 --- a/tools/perf/bench/futex-hash.c +++ b/tools/perf/bench/futex-hash.c @@ -20,6 +20,7 @@ #include <linux/kernel.h> #include <linux/zalloc.h> #include <sys/time.h> +#include <sys/mman.h> #include <perf/cpumap.h> #include "../util/stat.h" @@ -56,6 +57,7 @@ static const struct option options[] = { OPT_UINTEGER('f', "futexes", ¶ms.nfutexes, "Specify amount of futexes per 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() }; @@ -142,6 +144,11 @@ int bench_futex_hash(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"); + } + if (!params.nthreads) /* default to the number of CPUs */ params.nthreads = cpu->nr; |