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Subject[PATCH 2/2] perf docs: Update the documentation for the save_type filter
Date
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
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