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authorPaul Mundt <lethal@linux-sh.org>2010-05-31 12:59:19 +0900
committerPaul Mundt <lethal@linux-sh.org>2010-05-31 12:59:19 +0900
commit8fa76f7e61ef4e5bc97207143ea4e198b22487bc (patch)
tree266c42b6687e68e4febb72d8c031e5facd899a1c /arch/x86/kernel/cpu/perf_event.c
parenta41a7b91772da2c77ac0da74285fd8ebd86a85ba (diff)
parent67a3e12b05e055c0415c556a315a3d3eb637e29e (diff)
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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'arch/x86/kernel/cpu/perf_event.c')
-rw-r--r--arch/x86/kernel/cpu/perf_event.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c
index fd4db0d..c775860 100644
--- a/arch/x86/kernel/cpu/perf_event.c
+++ b/arch/x86/kernel/cpu/perf_event.c
@@ -1717,7 +1717,11 @@ void perf_arch_fetch_caller_regs(struct pt_regs *regs, unsigned long ip, int ski
*/
regs->bp = rewind_frame_pointer(skip + 1);
regs->cs = __KERNEL_CS;
- local_save_flags(regs->flags);
+ /*
+ * We abuse bit 3 to pass exact information, see perf_misc_flags
+ * and the comment with PERF_EFLAGS_EXACT.
+ */
+ regs->flags = 0;
}
unsigned long perf_instruction_pointer(struct pt_regs *regs)