From: Benson Leung <bleung@google.com>
To: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Cc: olof@lixom.net, bleung@chromium.org,
linux-kernel@vger.kernel.org, lee.jones@linaro.org,
Nicolas Boichat <drinkcat@chromium.org>,
bleung@google.com
Subject: Re: [PATCH RESEND 04/13] mfd: cros_ec: Add support for dumping panic information
Date: Thu, 22 Jun 2017 16:38:28 -0700 [thread overview]
Message-ID: <20170622233828.GA125744@decatoncale.mtv.corp.google.com> (raw)
In-Reply-To: <20170516161319.13257-5-enric.balletbo@collabora.com>
[-- Attachment #1: Type: text/plain, Size: 3409 bytes --]
Hi Enric,
On Tue, May 16, 2017 at 06:13:10PM +0200, Enric Balletbo i Serra wrote:
> From: Nicolas Boichat <drinkcat@chromium.org>
>
> This dumps the EC panic information from the previous reboot.
>
> Similar to the information presented by ectool panicinfo, except
> that we do not bother doing any parsing (we should write a small
> offline tool for that).
>
> Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
> Reviewed-by: Guenter Roeck <groeck@chromium.org>
> Tested-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Benson Leung <bleung@chromium.org>
Applied. Thanks.
> ---
> drivers/platform/chrome/cros_ec_debugfs.c | 54 +++++++++++++++++++++++++++++++
> 1 file changed, 54 insertions(+)
>
> diff --git a/drivers/platform/chrome/cros_ec_debugfs.c b/drivers/platform/chrome/cros_ec_debugfs.c
> index f8195bb..8133c33 100644
> --- a/drivers/platform/chrome/cros_ec_debugfs.c
> +++ b/drivers/platform/chrome/cros_ec_debugfs.c
> @@ -47,15 +47,19 @@
> * @log_mutex: mutex to protect circular buffer
> * @log_wq: waitqueue for log readers
> * @log_poll_work: recurring task to poll EC for new console log data
> + * @panicinfo_blob: panicinfo debugfs blob
> */
> struct cros_ec_debugfs {
> struct cros_ec_dev *ec;
> struct dentry *dir;
> + /* EC log */
> struct circ_buf log_buffer;
> struct cros_ec_command *read_msg;
> struct mutex log_mutex;
> wait_queue_head_t log_wq;
> struct delayed_work log_poll_work;
> + /* EC panicinfo */
> + struct debugfs_blob_wrapper panicinfo_blob;
> };
>
> /*
> @@ -308,6 +312,52 @@ static void cros_ec_cleanup_console_log(struct cros_ec_debugfs *debug_info)
> }
> }
>
> +static int cros_ec_create_panicinfo(struct cros_ec_debugfs *debug_info)
> +{
> + struct cros_ec_device *ec_dev = debug_info->ec->ec_dev;
> + int ret;
> + struct cros_ec_command *msg;
> + int insize;
> +
> + insize = ec_dev->max_response;
> +
> + msg = devm_kzalloc(debug_info->ec->dev,
> + sizeof(*msg) + insize, GFP_KERNEL);
> + if (!msg)
> + return -ENOMEM;
> +
> + msg->command = EC_CMD_GET_PANIC_INFO;
> + msg->insize = insize;
> +
> + ret = cros_ec_cmd_xfer(ec_dev, msg);
> + if (ret < 0) {
> + dev_warn(debug_info->ec->dev, "Cannot read panicinfo.\n");
> + ret = 0;
> + goto free;
> + }
> +
> + /* No panic data */
> + if (ret == 0)
> + goto free;
> +
> + debug_info->panicinfo_blob.data = msg->data;
> + debug_info->panicinfo_blob.size = ret;
> +
> + if (!debugfs_create_blob("panicinfo",
> + S_IFREG | S_IRUGO,
> + debug_info->dir,
> + &debug_info->panicinfo_blob)) {
> + ret = -ENOMEM;
> + goto free;
> + }
> +
> + return 0;
> +
> +free:
> + devm_kfree(debug_info->ec->dev, msg);
> + return ret;
> +}
> +
> int cros_ec_debugfs_init(struct cros_ec_dev *ec)
> {
> struct cros_ec_platform *ec_platform = dev_get_platdata(ec->dev);
> @@ -324,6 +374,10 @@ int cros_ec_debugfs_init(struct cros_ec_dev *ec)
> if (!debug_info->dir)
> return -ENOMEM;
>
> + ret = cros_ec_create_panicinfo(debug_info);
> + if (ret)
> + goto remove_debugfs;
> +
> ret = cros_ec_create_console_log(debug_info);
> if (ret)
> goto remove_debugfs;
> --
> 2.9.3
>
--
Benson Leung
Staff Software Engineer
Chrome OS Kernel
Google Inc.
bleung@google.com
Chromium OS Project
bleung@chromium.org
[-- Attachment #2: Digital signature --]
[-- Type: application/pgp-signature, Size: 819 bytes --]
next prev parent reply other threads:[~2017-06-22 23:38 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-16 16:13 [PATCH RESEND 00/13] platform/chrome: Add console debugfs, lpc and lightbar programming support Enric Balletbo i Serra
2017-05-16 16:13 ` [PATCH RESEND 01/13] mfd: cros_ec: Add helper for event notifier Enric Balletbo i Serra
2017-06-16 20:45 ` Benson Leung
2017-05-16 16:13 ` [PATCH RESEND 02/13] mfd: cros_ec: Add EC console read structures definitions Enric Balletbo i Serra
2017-06-16 20:47 ` Benson Leung
2017-05-16 16:13 ` [PATCH RESEND 03/13] mfd: cros_ec: add debugfs, console log file Enric Balletbo i Serra
2017-06-16 19:42 ` Benson Leung
2017-05-16 16:13 ` [PATCH RESEND 04/13] mfd: cros_ec: Add support for dumping panic information Enric Balletbo i Serra
2017-06-22 23:38 ` Benson Leung [this message]
2017-05-16 16:13 ` [PATCH RESEND 05/13] platform/chrome: cros_ec_lpc: Add R/W helpers to LPC protocol variants Enric Balletbo i Serra
2017-05-22 11:09 ` Lee Jones
2017-06-22 19:02 ` Benson Leung
2017-05-16 16:13 ` [PATCH RESEND 06/13] platform/chrome: cros_ec_lpc: Add support for mec1322 EC Enric Balletbo i Serra
2017-05-22 11:09 ` Lee Jones
2017-06-22 19:01 ` Benson Leung
2017-05-16 16:13 ` [PATCH RESEND 07/13] platform/chrome: cros_ec_lpc: Add support for GOOG004 ACPI device Enric Balletbo i Serra
2017-06-22 19:39 ` Benson Leung
2017-05-16 16:13 ` [PATCH RESEND 08/13] platform/chrome: cros_ec_lpc: Add power management ops Enric Balletbo i Serra
2017-06-22 19:46 ` Benson Leung
2017-05-16 16:13 ` [PATCH RESEND 09/13] platform/chrome: cros_ec_lpc: Add MKBP events support over ACPI Enric Balletbo i Serra
2017-06-22 19:35 ` Benson Leung
2017-06-23 7:35 ` Thierry Escande
2017-06-23 17:54 ` Benson Leung
2017-05-16 16:13 ` [PATCH RESEND 10/13] platform/chrome: cros_ec_lightbar - Add lightbar program feature to sysfs Enric Balletbo i Serra
2017-06-22 23:43 ` Benson Leung
2017-05-16 16:13 ` [PATCH RESEND 11/13] platform/chrome: cros_ec_lightbar - Control of suspend/resume lightbar sequence Enric Balletbo i Serra
2017-06-23 22:08 ` Benson Leung
2017-05-16 16:13 ` [PATCH RESEND 12/13] platform/chrome: cros_ec_lightbar - Add userspace lightbar control bit to EC Enric Balletbo i Serra
2017-06-23 22:12 ` Benson Leung
2017-05-16 16:13 ` [PATCH RESEND 13/13] platform/chrome: cros_ec_lightbar - Avoid I2C xfer to EC during suspend Enric Balletbo i Serra
2017-06-23 22:22 ` Benson Leung
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=20170622233828.GA125744@decatoncale.mtv.corp.google.com \
--to=bleung@google.com \
--cc=bleung@chromium.org \
--cc=drinkcat@chromium.org \
--cc=enric.balletbo@collabora.com \
--cc=lee.jones@linaro.org \
--cc=linux-kernel@vger.kernel.org \
--cc=olof@lixom.net \
/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).