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| author | Yang Shi <yang.shi@linaro.org> | 2015-09-30 00:49:43 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-10-02 22:11:08 +0300 |
| commit | 9f065194e2a505bb6fd23946b410a0036e9de2ca (patch) | |
| tree | 08a1878dc7933d72e57d494ec15c45cb562b61d9 /tools/perf/Documentation | |
| parent | 1a8ac29cbffc261f6d7c92e573878110a7dcbd94 (diff) | |
| download | linux-9f065194e2a505bb6fd23946b410a0036e9de2ca.tar.xz | |
perf record: Change 'record.samples' type to unsigned long long
When run "perf record -e", the number of samples showed up is wrong on some
32 bit systems, i.e. powerpc and arm.
For example, run the below commands on 32 bit powerpc:
perf probe -x /lib/libc.so.6 malloc
perf record -e probe_libc:malloc -a ls perf.data
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.036 MB perf.data (13829241621624967218 samples) ]
Actually, "perf script" just shows 21 samples. The number of samples is also
absurd since samples is long type, but it is printed as PRIu64.
Build test ran on x86-64, x86, aarch64, arm, mips, ppc and ppc64.
Signed-off-by: Yang Shi <yang.shi@linaro.org>
Cc: linaro-kernel@lists.linaro.org
Link: http://lkml.kernel.org/r/1443563383-4064-1-git-send-email-yang.shi@linaro.org
[ Bumped the 'hits' var used together with record.samples to 'unsigned long long' too ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/Documentation')
0 files changed, 0 insertions, 0 deletions