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| author | Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> | 2006-06-26 00:25:25 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-26 09:58:22 -0700 |
| commit | b71b5b652852db1b499d22aaabed8f5043acafad (patch) | |
| tree | 82f5e0c8090515fc8886f26540a3b00ae603ae77 /include/asm-i386/kdebug.h | |
| parent | 1bd858a507937cef6e8ca5efc6820a5744e73683 (diff) | |
| download | op-kernel-dev-b71b5b652852db1b499d22aaabed8f5043acafad.zip op-kernel-dev-b71b5b652852db1b499d22aaabed8f5043acafad.tar.gz | |
[PATCH] Notify page fault call chain for i386
Overloading of page fault notification with the notify_die() has performance
issues(since the only interested components for page fault is kprobes and/or
kdb) and hence this patch introduces the new notifier call chain exclusively
for page fault notifications their by avoiding notifying unnecessary
components in the do_page_fault() code path.
Signed-off-by: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-i386/kdebug.h')
| -rw-r--r-- | include/asm-i386/kdebug.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/asm-i386/kdebug.h b/include/asm-i386/kdebug.h index 96d0828..d18cdb9 100644 --- a/include/asm-i386/kdebug.h +++ b/include/asm-i386/kdebug.h @@ -19,6 +19,8 @@ struct die_args { extern int register_die_notifier(struct notifier_block *); extern int unregister_die_notifier(struct notifier_block *); +extern int register_page_fault_notifier(struct notifier_block *); +extern int unregister_page_fault_notifier(struct notifier_block *); extern struct atomic_notifier_head i386die_chain; |
