diff options
| author | Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> | 2006-06-26 03:25:26 -0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-26 12:58:22 -0400 |
| commit | ae9a5b85655d7133ab8e7c99b742ef20c8dbb7d2 (patch) | |
| tree | 011bf055ef888a4cfb949fec467bd6385a090d12 /include/asm-ia64 | |
| parent | b71b5b652852db1b499d22aaabed8f5043acafad (diff) | |
[PATCH] Notify page fault call chain for ia64
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-ia64')
| -rw-r--r-- | include/asm-ia64/kdebug.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/asm-ia64/kdebug.h b/include/asm-ia64/kdebug.h index c195a9ad1255..aed7142f9e4a 100644 --- a/include/asm-ia64/kdebug.h +++ b/include/asm-ia64/kdebug.h | |||
| @@ -40,6 +40,8 @@ struct die_args { | |||
| 40 | 40 | ||
| 41 | extern int register_die_notifier(struct notifier_block *); | 41 | extern int register_die_notifier(struct notifier_block *); |
| 42 | extern int unregister_die_notifier(struct notifier_block *); | 42 | extern int unregister_die_notifier(struct notifier_block *); |
| 43 | extern int register_page_fault_notifier(struct notifier_block *); | ||
| 44 | extern int unregister_page_fault_notifier(struct notifier_block *); | ||
| 43 | extern struct atomic_notifier_head ia64die_chain; | 45 | extern struct atomic_notifier_head ia64die_chain; |
| 44 | 46 | ||
| 45 | enum die_val { | 47 | enum die_val { |