diff options
| author | Andi Kleen <ak@linux.intel.com> | 2013-09-20 07:40:44 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2013-10-04 10:06:16 +0200 |
| commit | b7af41a1bc255c0098c37a4bcf5c7e5e168ce875 (patch) | |
| tree | d6fc45600ecb9af6eb96c114269fa22b19c732db /arch/x86/kernel/cpu/perf_event.h | |
| parent | 475eeab9f3c1579c8da89667496084db4867bf7c (diff) | |
| download | linux-b7af41a1bc255c0098c37a4bcf5c7e5e168ce875.tar.gz | |
perf/x86: Suppress duplicated abort LBR records
Haswell always give an extra LBR record after every TSX abort.
Suppress the extra record.
This only works when the abort is visible in the LBR
If the original abort has already left the 16 LBR entries
the extra entry will will stay.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1379688044-14173-7-git-send-email-andi@firstfloor.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/kernel/cpu/perf_event.h')
| -rw-r--r-- | arch/x86/kernel/cpu/perf_event.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/perf_event.h b/arch/x86/kernel/cpu/perf_event.h index ce84edeeae27..fd00bb29425d 100644 --- a/arch/x86/kernel/cpu/perf_event.h +++ b/arch/x86/kernel/cpu/perf_event.h @@ -445,6 +445,7 @@ struct x86_pmu { int lbr_nr; /* hardware stack size */ u64 lbr_sel_mask; /* LBR_SELECT valid bits */ const int *lbr_sel_map; /* lbr_select mappings */ + bool lbr_double_abort; /* duplicated lbr aborts */ /* * Extra registers for events |