diff options
| author | Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> | 2006-06-26 03:25:27 -0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-26 12:58:22 -0400 |
| commit | 4f9e87c0454059e80f3811f95ad9f40ed28c69a2 (patch) | |
| tree | cc8290b8fc757b34e01a4e9c25bbe00496400084 /include | |
| parent | ae9a5b85655d7133ab8e7c99b742ef20c8dbb7d2 (diff) | |
[PATCH] Notify page fault call chain for powerpc
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')
| -rw-r--r-- | include/asm-powerpc/kdebug.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/asm-powerpc/kdebug.h b/include/asm-powerpc/kdebug.h index c01786ab5fa6..532bfee934f4 100644 --- a/include/asm-powerpc/kdebug.h +++ b/include/asm-powerpc/kdebug.h | |||
| @@ -18,6 +18,8 @@ struct die_args { | |||
| 18 | 18 | ||
| 19 | extern int register_die_notifier(struct notifier_block *); | 19 | extern int register_die_notifier(struct notifier_block *); |
| 20 | extern int unregister_die_notifier(struct notifier_block *); | 20 | extern int unregister_die_notifier(struct notifier_block *); |
| 21 | extern int register_page_fault_notifier(struct notifier_block *); | ||
| 22 | extern int unregister_page_fault_notifier(struct notifier_block *); | ||
| 21 | extern struct atomic_notifier_head powerpc_die_chain; | 23 | extern struct atomic_notifier_head powerpc_die_chain; |
| 22 | 24 | ||
| 23 | /* Grossly misnamed. */ | 25 | /* Grossly misnamed. */ |