From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759322AbYDKHzF (ORCPT ); Fri, 11 Apr 2008 03:55:05 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756084AbYDKHyv (ORCPT ); Fri, 11 Apr 2008 03:54:51 -0400 Received: from TYO201.gate.nec.co.jp ([202.32.8.193]:62345 "EHLO tyo201.gate.nec.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758826AbYDKHyt (ORCPT ); Fri, 11 Apr 2008 03:54:49 -0400 Message-ID: <47FF190B.6030406@ah.jp.nec.com> Date: Fri, 11 Apr 2008 16:53:47 +0900 From: Takenori Nagano User-Agent: Thunderbird 2.0.0.12 (Windows/20080213) MIME-Version: 1.0 To: linux-kernel@vger.kernel.org, Andrew Morton CC: kdb@oss.sgi.com, vgoyal@in.ibm.com, "Eric W. Biederman" , k-miyoshi@cb.jp.nec.com, kexec@lists.infradead.org, Bernhard Walle , Keith Owens , nickpiggin@yahoo.com.au, Randy Dunlap , greg@kroah.com Subject: [PATCH 0/2] add new notifier function ,take3 Content-Type: text/plain; charset=ISO-2022-JP Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, A big thanks to everybody who read and replied to previous version. changelog take2 -> take3 - Rebased 2.6.25-rc8-mm1 - comment updated - renamed the notifiner name "tunable_notifier" to "tunable_atomic_notifier" - fixed typo - move control files debugfs to /sys/kernel These patches add new notifier function and implement it to panic_notifier_list. We used the hardcoded notifier chain so far, but it was not flexible. New notifier is very flexible, because user can change a list of order by control files. Example) # cd /sys/kernel/notifiers/ # ls panic_notifier_list # cd panic_notifier_list/ # ls ipmi_msghandler ipmi_wdog # insmod notifier_test.ko # ls ipmi_msghandler ipmi_wdog notifier_test1 notifier_test2 # cat */priority 200 150 500 1000 Kernel panic - not syncing: Panic by panic_module. __tunable_atomic_notifier_call_chain enter notifier_test: notifier_test_panic2() is called. notifier_test: notifier_test_panic() is called. msg_handler:panic_event was called. ipmi_wdog:wdog_panic_handler was called. .....(reboot) # cd /sys/kernel/notifiers/panic_notifier_list/ # ls ipmi_msghandler ipmi_wdog notifier_test1 notifier_test2 # cat */priority 200 150 500 1000 # echo 10000 > ipmi_msghandler/priority # echo 5000 > ipmi_wdog/priority # echo 3000 > notifier_test1/priority # echo 1500 > notifier_test2/priority # cat */priority 10000 5000 3000 1500 Kernel panic - not syncing: Panic by panic_module. __tunable_atomic_notifier_call_chain enter msg_handler:panic_event was called. ipmi_wdog:wdog_panic_handler was called. notifier_test: notifier_test_panic() is called. notifier_test: notifier_test_panic2() is called. -- Takenori Nagano