From: Ross Zwisler <zwisler@google.com>
To: Raul E Rangel <rrangel@chromium.org>
Cc: linux-kernel@vger.kernel.org, zwisler@chromium.org,
djkurtz@chromium.org,
Enric Balletbo i Serra <enric.balletbo@collabora.com>,
Guenter Roeck <groeck@chromium.org>,
Benson Leung <bleung@chromium.org>
Subject: Re: [PATCH] cros_ec: Add trace event to trace EC commands
Date: Wed, 10 Apr 2019 14:41:39 -0600 [thread overview]
Message-ID: <20190410204139.GA144469@google.com> (raw)
In-Reply-To: <20190410202409.241507-1-rrangel@chromium.org>
On Wed, Apr 10, 2019 at 02:24:08PM -0600, Raul E Rangel wrote:
> This is useful to see which EC commands are being executed and when.
>
> To enable:
>
> echo 'cros_ec:*' >> /sys/kernel/debug/tracing/set_event
>
> Example:
>
> /* cros_ec_cmd: version: 0, command: GET_VERSION */
> /* cros_ec_cmd: version: 0, command: GET_PROTOCOL_INFO */
> /* cros_ec_cmd: version: 1, command: GET_CMD_VERSIONS */
> /* cros_ec_cmd: version: 1, command: USB_PD_CONTROL */
>
> Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Reviewed-by: Ross Zwisler <zwisler@google.com>
next prev parent reply other threads:[~2019-04-10 20:41 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-10 20:24 [PATCH] cros_ec: Add trace event to trace EC commands Raul E Rangel
2019-04-10 20:41 ` Ross Zwisler [this message]
2019-04-11 21:55 ` Enric Balletbo Serra
2019-04-11 22:28 ` Raul Rangel
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