mbox series

[v1,RESEND,0/2] perf cs-etm: Improve timestamp tracing

Message ID 20231014074159.1667880-1-leo.yan@linaro.org (mailing list archive)
Headers show
Series perf cs-etm: Improve timestamp tracing | expand

Message

Leo Yan Oct. 14, 2023, 7:41 a.m. UTC 
This patch series is to improve timestamp handling in per-thread mode.

The current code doesn't validate timestamp and always return success for
per-thread mode, for a sane implementation, the first patch is to allow
validation timestamp tracing in per-thread mode.

The second patch is to respect timestamp option "--timestamp" or "-T",
when users set this option, the tool will automatically enable hardware
timestamp tracing in Arm CoreSight.

This patch set is rebased on the latest perf-tools-next branch, and
tested on Arm Juno board. And added James Clark's review tags.


Leo Yan (2):
  perf cs-etm: Validate timestamp tracing in per-thread mode
  perf cs-etm: Respect timestamp option

 tools/perf/arch/arm/util/cs-etm.c | 22 ++++++++++++++++++++--
 1 file changed, 20 insertions(+), 2 deletions(-)

Comments

Namhyung Kim Oct. 17, 2023, 7:55 p.m. UTC | #1 
On Sat, 14 Oct 2023 15:41:57 +0800, Leo Yan wrote:
> This patch series is to improve timestamp handling in per-thread mode.
> 
> The current code doesn't validate timestamp and always return success for
> per-thread mode, for a sane implementation, the first patch is to allow
> validation timestamp tracing in per-thread mode.
> 
> The second patch is to respect timestamp option "--timestamp" or "-T",
> when users set this option, the tool will automatically enable hardware
> timestamp tracing in Arm CoreSight.
> 
> [...]

Applied to perf-tools-next, thanks!