Messages in this thread | | | Date | Thu, 25 Aug 2022 09:23:23 -0400 | Subject | Re: [PATCH 2/2] perf docs: Update the documentation for the save_type filter | From | "Liang, Kan" <> |
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Hi Arnaldo,
The kernel change has been merged into the tip perf/urgent branch.
Do you have any comments for the patch? If it's OK for you, could you please pull this patch?
Thanks, Kan
On 2022-08-16 8:56 a.m., kan.liang@linux.intel.com wrote: > 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.
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