Re: [PATCH] perf Documentation: Correct branch stack sampling call-stack option

@Arnaldo, @Kim, @Ian

Kindly ping ...

On 12/16/2025 9:39 AM, Dapeng Mi wrote:

The correct call-stack option for branch stack sampling should be "stack" instead of "call_stack". Correct it.

$perf record -e instructions -j call_stack -- sleep 1 unknown branch filter call_stack, check man page

Usage: perf record [<options>] [<command>] or: perf record [<options>] -- <command> [<options>]

-j, --branch-filter <branch filter mask>
                      branch stack filter modes

Cc: stable@vger.kernel.org Fixes: 955f6def5590 ("perf record: Add remaining branch filters: "no_cycles", "no_flags" & "hw_index"") Signed-off-by: Dapeng Mi dapeng1.mi@linux.intel.com

---

tools/perf/Documentation/perf-record.txt | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt index e8b9aadbbfa5..3d19e77c9c53 100644 --- a/tools/perf/Documentation/perf-record.txt +++ b/tools/perf/Documentation/perf-record.txt @@ -454,7 +454,7 @@ following filters are defined:

• no_tx: only when the target is not in a hardware transaction
• abort_tx: only when the target is a hardware transaction abort
• cond: conditional branches
• • call_stack: save call stack

• • stack: save call stack
  • no_flags: don't save branch flags e.g prediction, misprediction etc
  • no_cycles: don't save branch cycles
  • hw_index: save branch hardware index

base-commit: cb015814f8b6eebcbb8e46e111d108892c5e6821