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From: Anton Vorontsov <anton.vorontsov@linaro.org>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Kees Cook <keescook@chromium.org>,
	Colin Cross <ccross@android.com>, Tony Luck <tony.luck@intel.com>
Cc: Arnd Bergmann <arnd@arndb.de>,
	John Stultz <john.stultz@linaro.org>,
	Shuah Khan <shuahkhan@gmail.com>,
	arve@android.com, Rebecca Schultz Zavin <rebecca@android.com>,
	Jesper Juhl <jj@chaosbits.net>,
	Randy Dunlap <rdunlap@xenotime.net>,
	Stephen Boyd <sboyd@codeaurora.org>,
	Thomas Meyer <thomas@m3y3r.de>,
	Andrew Morton <akpm@linux-foundation.org>,
	Marco Stornelli <marco.stornelli@gmail.com>,
	WANG Cong <xiyou.wangcong@gmail.com>,
	linux-kernel@vger.kernel.org, devel@driverdev.osuosl.org,
	linaro-kernel@lists.linaro.org, patches@linaro.org,
	kernel-team@android.com
Subject: [PATCH 0/6] Merge ram_console into pstore
Date: Wed, 16 May 2012 05:53:30 -0700	[thread overview]
Message-ID: <20120516125330.GA15460@lizard> (raw)

Hi all,

Currently pstore doesn't support logging kernel messages in run-time,
it only dumps dmesg when kernel oopses/panics. This makes pstore
useless for debugging hangs caused by HW issues or improper use of HW
(e.g. weird device inserted -> driver tried to write reserved bits ->
SoC hanged. In that case we don't get any messages in the pstore.

This series add a new message type for pstore, i.e. PSTORE_TYPE_CONSOLE,
plus make pstore/ram.c handle the new messages.

The old ram_console driver is removed. This might probably cause
some pain for out-of-tree code, as it would need to be adjusted...
but "no pain, no gain"? :-) Though, if there's some serious resistance,
we can probably postpone the last two patches.

These patches depend on the following series:
http://thread.gmane.org/gmane.linux.kernel/1298179
"[PATCH v2 0/6] Merge ramoops and persistent_ram, generic pstore RAM backend"

Thanks!

--- 
 Documentation/ramoops.txt             |   15 +++
 drivers/staging/android/Kconfig       |    5 -
 drivers/staging/android/Makefile      |    1 -
 drivers/staging/android/ram_console.c |  179 ---------------------------------
 fs/pstore/Kconfig                     |    7 ++
 fs/pstore/inode.c                     |    3 +
 fs/pstore/platform.c                  |   25 +++++
 fs/pstore/ram.c                       |   39 +++++--
 fs/pstore/ram_core.c                  |   81 +--------------
 include/linux/pstore.h                |    1 +
 include/linux/pstore_ram.h            |   19 ----
 11 files changed, 83 insertions(+), 292 deletions(-)

-- 
Anton Vorontsov
Email: cbouatmailru@gmail.com

             reply	other threads:[~2012-05-16 12:55 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-05-16 12:53 Anton Vorontsov [this message]
2012-05-16 12:56 ` [PATCH 1/6] pstore: Add console log messages support Anton Vorontsov
2012-05-16 16:49   ` Kees Cook
2012-05-16 22:33     ` Anton Vorontsov
2012-05-17  0:47       ` Anton Vorontsov
2012-05-16 12:56 ` [PATCH 2/6] pstore/ram: Add console messages handling Anton Vorontsov
2012-05-16 15:30   ` Shuah Khan
2012-05-16 22:20     ` Anton Vorontsov
2012-05-16 16:45   ` Kees Cook
2012-05-16 22:28     ` Anton Vorontsov
2012-05-16 12:56 ` [PATCH 3/6] pstore/ram_core: Silence some printks Anton Vorontsov
2012-05-16 12:56 ` [PATCH 4/6] pstore/ram: Add some more documentation and examples Anton Vorontsov
2012-05-16 15:28   ` Shuah Khan
2012-05-16 17:56   ` Colin Cross
2012-05-16 22:11     ` Anton Vorontsov
2012-05-16 22:25       ` Colin Cross
2012-05-16 12:57 ` [PATCH 5/6] staging/android: Remove ram_console driver Anton Vorontsov
2012-05-16 12:57 ` [PATCH 6/6] pstore/ram_core: Remove now unused code Anton Vorontsov

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