From: Alexander van Heukelum <heukelum@fastmail.fm>
Date: Fri, 26 Sep 2008 12:03:05 +0000 (+0200)
Subject: traps: x86_64: remove trace_hardirqs_fixup from int3 handler
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=8b1c870f19849235b8c7e4dfe2ec6b0d691fa9d7;p=openwrt%2Fstaging%2Fblogic.git

traps: x86_64: remove trace_hardirqs_fixup from int3 handler

All exceptions are taken via interrupt gates. TRACE_IRQS_OFF
is called just before entering the C code, so the irq state
is known to the irq tracer at this point. No need to call
trace_hardirqs_fixup.

Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

diff --git a/arch/x86/kernel/traps_64.c b/arch/x86/kernel/traps_64.c
index 9f487f374c72..7d56c875dd03 100644
--- a/arch/x86/kernel/traps_64.c
+++ b/arch/x86/kernel/traps_64.c
@@ -861,8 +861,6 @@ void restart_nmi(void)
 /* runs on IST stack. */
 asmlinkage void __kprobes do_int3(struct pt_regs *regs, long error_code)
 {
-	trace_hardirqs_fixup();
-
 	if (notify_die(DIE_INT3, "int3", regs, error_code, 3, SIGTRAP)
 			== NOTIFY_STOP)
 		return;