From 74a0b5762713a26496db72eac34fbbed46f20fce Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Tue, 16 Oct 2007 01:24:07 -0700 Subject: 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 Cc: Andi Kleen Cc: Cc: Prasanna S Panchamukhi Cc: Ananth N Mavinakayanahalli Cc: Anil S Keshavamurthy Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/asm-s390/kdebug.h | 15 --------------- include/asm-s390/kprobes.h | 1 - 2 files changed, 16 deletions(-) (limited to 'include/asm-s390') diff --git a/include/asm-s390/kdebug.h b/include/asm-s390/kdebug.h index 04418af08f8..40db27cd6e6 100644 --- a/include/asm-s390/kdebug.h +++ b/include/asm-s390/kdebug.h @@ -4,24 +4,9 @@ /* * Feb 2006 Ported to s390 */ -#include struct pt_regs; -/* - * These are only here because kprobes.c wants them to implement a - * blatant layering violation. Will hopefully go away soon once all - * architectures are updated. - */ -static inline int register_page_fault_notifier(struct notifier_block *nb) -{ - return 0; -} -static inline int unregister_page_fault_notifier(struct notifier_block *nb) -{ - return 0; -} - enum die_val { DIE_OOPS = 1, DIE_BPT, diff --git a/include/asm-s390/kprobes.h b/include/asm-s390/kprobes.h index 340ba10446e..8bc67cc9ffd 100644 --- a/include/asm-s390/kprobes.h +++ b/include/asm-s390/kprobes.h @@ -47,7 +47,6 @@ typedef u16 kprobe_opcode_t; : (((unsigned long)current_thread_info()) + THREAD_SIZE - (ADDR))) #define ARCH_SUPPORTS_KRETPROBES -#define ARCH_INACTIVE_KPROBE_COUNT 0 #define KPROBE_SWAP_INST 0x10 -- cgit v1.2.3-70-g09d2