linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Leo Yan <leo.yan@linaro.org>
To: German Gomez <german.gomez@arm.com>
Cc: coresight@lists.linaro.org, mathieu.poirier@linaro.org,
	suzuki.poulose@arm.com, james.clark@arm.com,
	mike.leach@linaro.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/2] coresight: etm4x: Expose default timestamp source in sysfs
Date: Sat, 30 Apr 2022 00:28:21 +0800	[thread overview]
Message-ID: <20220429162821.GA653442@leoy-ThinkPad-X240s> (raw)
In-Reply-To: <20220429123100.268059-2-german.gomez@arm.com>

On Fri, Apr 29, 2022 at 01:30:59PM +0100, German Gomez wrote:
> Add a new sysfs interface in /sys/bus/coresight/devices/etm<N>/ts_source
> indicating the configured timestamp source when the ETM device driver
> was probed.
> 
> The perf tool will use this information to detect if the trace data
> timestamp matches the kernel time, enabling correlation of CoreSight
> trace with perf events.
> 
> Suggested-by: Suzuki K Poulose <suzuki.poulose@arm.com>
> Signed-off-by: German Gomez <german.gomez@arm.com>

Reviewed-by: Leo Yan <leo.yan@linaro.org>

  reply	other threads:[~2022-04-29 16:29 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-04-29 12:30 [PATCH 0/2] coresight: etm4x: Expose default timestamp source in sysfs German Gomez
2022-04-29 12:30 ` [PATCH 1/2] " German Gomez
2022-04-29 16:28   ` Leo Yan [this message]
2022-05-02 16:49   ` Mathieu Poirier
2022-04-29 12:31 ` [PATCH 2/2] coresight: etm4x: docs: Add documentation for 'ts_source' sysfs interface German Gomez
2022-05-02 16:45   ` Mathieu Poirier

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20220429162821.GA653442@leoy-ThinkPad-X240s \
    --to=leo.yan@linaro.org \
    --cc=coresight@lists.linaro.org \
    --cc=german.gomez@arm.com \
    --cc=james.clark@arm.com \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mathieu.poirier@linaro.org \
    --cc=mike.leach@linaro.org \
    --cc=suzuki.poulose@arm.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).