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| author | Davidlohr Bueso <dave@stgolabs.net> | 2021-08-08 21:32:58 -0700 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2021-08-09 12:00:04 -0300 |
| commit | 9f9a3ffe94f263388b99cb75e4ec374e31aaeb0f (patch) | |
| tree | bc35c452426a5763e94488dc91377a2683f4ef1b /tools/perf/bench/futex.h | |
| parent | b2105a75703ebe098710beedc7a1685f67010675 (diff) | |
| download | linux-next-9f9a3ffe94f263388b99cb75e4ec374e31aaeb0f.tar.gz linux-next-9f9a3ffe94f263388b99cb75e4ec374e31aaeb0f.zip | |
perf bench futex: Add --mlockall parameter
This adds, across all futex benchmarks, the -m/--mlockall option
which is a common operation for realtime workloads by not incurring
in page faults in paths that want determinism. As such, threads
started after a call to mlockall(2) will generate page faults
immediately since the new stack is immediately forced to memory,
due to the MCL_FUTURE flag.
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Cc: Davidlohr Bueso <dbueso@suse.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lore.kernel.org/lkml/20210809043301.66002-5-dave@stgolabs.net
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/bench/futex.h')
| -rw-r--r-- | tools/perf/bench/futex.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/perf/bench/futex.h b/tools/perf/bench/futex.h index 6f8b85b67348..fca4eee5e040 100644 --- a/tools/perf/bench/futex.h +++ b/tools/perf/bench/futex.h @@ -16,6 +16,7 @@ struct bench_futex_parameters { bool silent; bool fshared; + bool mlockall; bool multi; /* lock-pi */ unsigned int runtime; /* seconds*/ unsigned int nthreads; |