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authorChristoph Hellwig <hch@lst.de>2007-10-16 04:24:07 -0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-16 12:42:50 -0400
commit74a0b5762713a26496db72eac34fbbed46f20fce (patch)
tree4a14df7c07ebc16283454f33713519a0e10b5c43 /include/asm-s390
parentd5a7430ddcdb598261d70f7eb1bf450b5be52085 (diff)
x86: optimize page faults like all other achitectures and kill notifier cruft
x86(-64) are the last architectures still using the page fault notifier cruft for the kprobes page fault hook. This patch converts them to the proper direct calls, and removes the now unused pagefault notifier bits aswell as the cruft in kprobes.c that was related to this mess. I know Andi didn't really like this, but all other architecture maintainers agreed the direct calls are much better and besides the obvious cruft removal a common way of dealing with kprobes across architectures is important aswell. [akpm@linux-foundation.org: build fix] [akpm@linux-foundation.org: fix sparc64] Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Andi Kleen <ak@suse.de> Cc: <linux-arch@vger.kernel.org> Cc: Prasanna S Panchamukhi <prasanna@in.ibm.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/asm-s390')
-rw-r--r--include/asm-s390/kdebug.h15
-rw-r--r--include/asm-s390/kprobes.h1
2 files changed, 0 insertions, 16 deletions
diff --git a/include/asm-s390/kdebug.h b/include/asm-s390/kdebug.h
index 04418af08f85..40db27cd6e60 100644
--- a/include/asm-s390/kdebug.h
+++ b/include/asm-s390/kdebug.h
@@ -4,24 +4,9 @@
4/* 4/*
5 * Feb 2006 Ported to s390 <grundym@us.ibm.com> 5 * Feb 2006 Ported to s390 <grundym@us.ibm.com>
6 */ 6 */
7#include <linux/notifier.h>
8 7
9struct pt_regs; 8struct pt_regs;
10 9
11/*
12 * These are only here because kprobes.c wants them to implement a
13 * blatant layering violation. Will hopefully go away soon once all
14 * architectures are updated.
15 */
16static inline int register_page_fault_notifier(struct notifier_block *nb)
17{
18 return 0;
19}
20static inline int unregister_page_fault_notifier(struct notifier_block *nb)
21{
22 return 0;
23}
24
25enum die_val { 10enum die_val {
26 DIE_OOPS = 1, 11 DIE_OOPS = 1,
27 DIE_BPT, 12 DIE_BPT,
diff --git a/include/asm-s390/kprobes.h b/include/asm-s390/kprobes.h
index 340ba10446ea..8bc67cc9ffd2 100644
--- a/include/asm-s390/kprobes.h
+++ b/include/asm-s390/kprobes.h
@@ -47,7 +47,6 @@ typedef u16 kprobe_opcode_t;
47 : (((unsigned long)current_thread_info()) + THREAD_SIZE - (ADDR))) 47 : (((unsigned long)current_thread_info()) + THREAD_SIZE - (ADDR)))
48 48
49#define ARCH_SUPPORTS_KRETPROBES 49#define ARCH_SUPPORTS_KRETPROBES
50#define ARCH_INACTIVE_KPROBE_COUNT 0
51 50
52#define KPROBE_SWAP_INST 0x10 51#define KPROBE_SWAP_INST 0x10
53 52