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| author | Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> | 2006-06-26 00:25:27 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-26 09:58:22 -0700 |
| commit | 4f9e87c0454059e80f3811f95ad9f40ed28c69a2 (patch) | |
| tree | cc8290b8fc757b34e01a4e9c25bbe00496400084 /include | |
| parent | ae9a5b85655d7133ab8e7c99b742ef20c8dbb7d2 (diff) | |
| download | linux-4f9e87c0454059e80f3811f95ad9f40ed28c69a2.tar.gz linux-4f9e87c0454059e80f3811f95ad9f40ed28c69a2.tar.bz2 linux-4f9e87c0454059e80f3811f95ad9f40ed28c69a2.zip | |
[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 { 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 powerpc_die_chain; /* Grossly misnamed. */ |