diff options
| author | Peter Zijlstra <[email protected]> | 2011-04-26 13:24:33 +0200 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2011-04-26 13:34:34 +0200 |
| commit | 18a073a3acd3a47fbb5e23333df7fad28d576345 (patch) | |
| tree | 7b961ab5fd0f98a2348e4eaa419838040d7f8034 /tools/perf/scripts/python/futex-contention.py | |
| parent | cd2e49e90f1cae7726c9a2c54488d881d7f1cd1c (diff) | |
perf, x86: Fix BTS condition
Currently the x86 backend incorrectly assumes that any BRANCH_INSN
with sample_period==1 is a BTS request. This is not true when we do
frequency driven profiling such as 'perf record -e branches'.
Solves this error:
$ perf record -e branches ./array
Error: sys_perf_event_open() syscall returned with 95 (Operation not supported).
Signed-off-by: Peter Zijlstra <[email protected]>
Reported-by: Ingo Molnar <[email protected]>
Cc: "Metzger, Markus T" <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Link: http://lkml.kernel.org/n/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/futex-contention.py')
0 files changed, 0 insertions, 0 deletions