Messages in this thread | | | Date | Wed, 19 Apr 2006 12:00:59 -0700 | From | Anil S Keshavamurthy <> | Subject | [patch 0/6] Notify page fault call chain |
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Hi Andrew,
Currently in the do_page_fault() code path, we call notify_die(DIE_PAGE_FAULT, ...) to notify the page fault. The only interested components for this page fault notifications are Kprobes and/or kdb. Since notify_die() is highly overloaded, this page fault notification is currently being sent to other components registered with register_die_notification() which uses the same die_chain to loop for all the registered components.
In order to optimize the do_page_fault() code path, this critical page fault notification is now moved to different call chain and the test results showed great improvements.
Patches for i386, x86_64, ia64, powerpc and sparc64 follows this mail.
Please apply.
Thanks, Anil Keshavamurthy
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