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authormao, bibo <bibo.mao@intel.com>2006-04-27 21:39:44 -0400
committerLinus Torvalds <torvalds@g5.osdl.org>2006-04-28 11:33:47 -0400
commitbf661987da6f5131475dfe3f51a98de4e2589ed3 (patch)
tree4db8c9692e6517dfe8190e3ee9451b8b713116e8 /arch/i386/kernel/kprobes.c
parent9539d4e79fae8482bc64ced03a46c7c6d711d19e (diff)
[PATCH] kprobe cleanup for VM_MASK judgement
When trap happens in user space, kprobe_exceptions_notify() funtion will skip it. This patch deletes some unnecessary code for VM_MASK judgement in eflags. Signed-off-by: bibo, mao <bibo.mao@intel.com> Cc: Masami Hiramatsu <hiramatu@sdl.hitachi.co.jp> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Acked-by: "Keshavamurthy, Anil S" <anil.s.keshavamurthy@intel.com> Acked-by: Prasanna S Panchamukhi <prasanna@in.ibm.com> Cc: Jim Keniston <jkenisto@us.ibm.com> Cc: Yumiko Sugita <sugita@sdl.hitachi.co.jp> Cc: Satoshi Oshima <soshima@redhat.com> Cc: Hideo Aoki <haoki@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/i386/kernel/kprobes.c')
-rw-r--r--arch/i386/kernel/kprobes.c9
1 files changed, 0 insertions, 9 deletions
diff --git a/arch/i386/kernel/kprobes.c b/arch/i386/kernel/kprobes.c
index 043f5292e70a..6c93ddf09512 100644
--- a/arch/i386/kernel/kprobes.c
+++ b/arch/i386/kernel/kprobes.c
@@ -242,10 +242,6 @@ static int __kprobes kprobe_handler(struct pt_regs *regs)
242 kcb->kprobe_status = KPROBE_REENTER; 242 kcb->kprobe_status = KPROBE_REENTER;
243 return 1; 243 return 1;
244 } else { 244 } else {
245 if (regs->eflags & VM_MASK) {
246 /* We are in virtual-8086 mode. Return 0 */
247 goto no_kprobe;
248 }
249 if (*addr != BREAKPOINT_INSTRUCTION) { 245 if (*addr != BREAKPOINT_INSTRUCTION) {
250 /* The breakpoint instruction was removed by 246 /* The breakpoint instruction was removed by
251 * another cpu right after we hit, no further 247 * another cpu right after we hit, no further
@@ -265,11 +261,6 @@ static int __kprobes kprobe_handler(struct pt_regs *regs)
265 261
266 p = get_kprobe(addr); 262 p = get_kprobe(addr);
267 if (!p) { 263 if (!p) {
268 if (regs->eflags & VM_MASK) {
269 /* We are in virtual-8086 mode. Return 0 */
270 goto no_kprobe;
271 }
272
273 if (*addr != BREAKPOINT_INSTRUCTION) { 264 if (*addr != BREAKPOINT_INSTRUCTION) {
274 /* 265 /*
275 * The breakpoint instruction was removed right 266 * The breakpoint instruction was removed right