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