diff options
| author | Davidlohr Bueso <dave@stgolabs.net> | 2016-10-24 22:56:53 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-10-25 14:50:53 +0200 |
| commit | 60758d6668b3e2fa8e5fd143d24d0425203d007e (patch) | |
| tree | 4e825f050b8853a68ec3e711a6e7d0c458b1e61f /tools/perf/bench/mem-memcpy-arch.h | |
| parent | perf bench futex: Avoid worker cacheline bouncing (diff) | |
| download | linux-60758d6668b3e2fa8e5fd143d24d0425203d007e.tar.xz linux-60758d6668b3e2fa8e5fd143d24d0425203d007e.zip | |
perf bench futex: Sanitize numeric parameters
This gets rid of oddities such as:
perf bench futex hash -t -4
perf: calloc: Cannot allocate memory
Runtime (and many more) are equally busted, i.e. run for bogus amounts of
time. Just use the abs, instead of, for example errorring out.
Committer note:
After the patch:
$ perf bench futex hash -t -4
# Running 'futex/hash' benchmark:
Run summary [PID 10178]: 4 threads, each operating on 1024 [private] futexes for 10 secs.
[thread 0] futexes: 0x34f9fa0 ... 0x34faf9c [ 4702208 ops/sec ]
[thread 1] futexes: 0x34fb140 ... 0x34fc13c [ 4707020 ops/sec ]
[thread 2] futexes: 0x34fc2e0 ... 0x34fd2dc [ 4711526 ops/sec ]
[thread 3] futexes: 0x34fd480 ... 0x34fe47c [ 4709683 ops/sec ]
Averaged 4707609 operations/sec (+- 0.04%), total secs = 10
$
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Link: http://lkml.kernel.org/r/1477342613-9938-3-git-send-email-dave@stgolabs.net
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/bench/mem-memcpy-arch.h')
0 files changed, 0 insertions, 0 deletions