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
@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 modesCc: 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
Hello,
On Wed, Jan 07, 2026 at 08:58:53AM +0800, Mi, Dapeng wrote:
@Arnaldo, @Kim, @Ian
Kindly ping ...
Sorry for the delay.
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 modesCc: 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
Reviewed-by: Namhyung Kim namhyung@kernel.org
Thanks, Namhyung
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
On 1/8/2026 2:14 PM, Namhyung Kim wrote:
Hello,
On Wed, Jan 07, 2026 at 08:58:53AM +0800, Mi, Dapeng wrote:
@Arnaldo, @Kim, @Ian
Kindly ping ...
Sorry for the delay.
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 modesCc: 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
Reviewed-by: Namhyung Kim namhyung@kernel.org
Thanks a lot. :)
Thanks, Namhyung
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
linux-stable-mirror@lists.linaro.org
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Dapeng Mi -
Mi, Dapeng
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Namhyung Kim