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| author | Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> | 2006-06-26 09:25:27 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-26 18:58:22 +0200 |
| commit | d98f8f05188b45168db43df8ddc9feeb0b1cd512 (patch) | |
| tree | 505edc88aa4e8ec3593d7a218c470e7cb9640fb7 /include/asm-sparc64 | |
| parent | [PATCH] Notify page fault call chain for powerpc (diff) | |
| download | linux-d98f8f05188b45168db43df8ddc9feeb0b1cd512.tar.xz linux-d98f8f05188b45168db43df8ddc9feeb0b1cd512.zip | |
[PATCH] Notify page fault call chain for sparc64
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-sparc64')
| -rw-r--r-- | include/asm-sparc64/kdebug.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/asm-sparc64/kdebug.h b/include/asm-sparc64/kdebug.h index 4040d127ac3e..11251bdd00cb 100644 --- a/include/asm-sparc64/kdebug.h +++ b/include/asm-sparc64/kdebug.h @@ -17,6 +17,8 @@ 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 sparc64die_chain; extern void bad_trap(struct pt_regs *, long); |