Messages in this thread Patch in this message | | | From | kan.liang@linux ... | Subject | [PATCH 2/2] perf docs: Update the documentation for the save_type filter | Date | Tue, 16 Aug 2022 05:56:12 -0700 |
| |
From: Kan Liang <kan.liang@linux.intel.com>
Update the documentation to reflect the kernel changes.
Signed-off-by: Kan Liang <kan.liang@linux.intel.com> --- tools/perf/Documentation/perf-record.txt | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt index 099817ef5150..d5c57ac1ee0a 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. -- 2.35.1
| |