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 <t-nagano@ah.jp.nec.com> --
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