diff options
| author | Kan Liang <[email protected]> | 2022-08-16 05:56:12 -0700 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <[email protected]> | 2022-08-27 11:55:17 -0300 |
| commit | 3126204ce3d9ab083cbdc2d61ab93746232eb89b (patch) | |
| tree | f95331d8ed59bd305a0e76111785836faf0e7047 | |
| parent | d72e5cf3cf69d4c68d3b54aea232451b0a8b69d3 (diff) | |
perf docs: Update the documentation for the save_type filter
Update the documentation to reflect the kernel changes.
Signed-off-by: Kan Liang <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: Ian Rogers <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Stephane Eranian <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
| -rw-r--r-- | tools/perf/Documentation/perf-record.txt | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt index 6ec6d0ba0a72..0228efc96686 100644 --- a/tools/perf/Documentation/perf-record.txt +++ b/tools/perf/Documentation/perf-record.txt @@ -397,6 +397,9 @@ following filters are defined: - abort_tx: only when the target is a hardware transaction abort - cond: conditional branches - save_type: save branch type during sampling in case binary is not available later + For the platforms with Intel Arch LBR support (12th-Gen+ client or + 4th-Gen Xeon+ server), the save branch type is unconditionally enabled + when the taken branch stack sampling is enabled. + The option requires at least one branch type among any, any_call, any_ret, ind_call, cond. |