[RFC PATCH 05/22 -v2] add notrace annotations for NMI routines

[Steven Rostedt]

This annotates NMI functions with notrace. Some tracers may be able
to live with this, but some cannot. So we turn off NMI tracing.

One solution might be to make a notrace_nmi which would only turn
off NMI tracing if a trace utility needed it off.

Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Steven Rostedt <srostedt@xxxxxxxxxx>

---
 arch/x86/kernel/nmi_32.c   |    2 +-
 arch/x86/kernel/nmi_64.c   |    2 +-
 arch/x86/kernel/traps_32.c |    4 ++--
 3 files changed, 4 insertions(+), 4 deletions(-)

Index: linux-compile-i386.git/arch/x86/kernel/nmi_32.c
===================================================================
--- linux-compile-i386.git.orig/arch/x86/kernel/nmi_32.c	2008-01-09 14:07:36.000000000 -0500
+++ linux-compile-i386.git/arch/x86/kernel/nmi_32.c	2008-01-09 14:10:29.000000000 -0500
@@ -323,7 +323,7 @@ EXPORT_SYMBOL(touch_nmi_watchdog);
 
 extern void die_nmi(struct pt_regs *, const char *msg);
 
-__kprobes int nmi_watchdog_tick(struct pt_regs * regs, unsigned reason)
+notrace __kprobes int nmi_watchdog_tick(struct pt_regs *regs, unsigned reason)
 {
 
 	/*
Index: linux-compile-i386.git/arch/x86/kernel/traps_32.c
===================================================================
--- linux-compile-i386.git.orig/arch/x86/kernel/traps_32.c	2008-01-09 14:07:36.000000000 -0500
+++ linux-compile-i386.git/arch/x86/kernel/traps_32.c	2008-01-09 14:10:29.000000000 -0500
@@ -722,7 +722,7 @@ void __kprobes die_nmi(struct pt_regs *r
 	do_exit(SIGSEGV);
 }
 
-static __kprobes void default_do_nmi(struct pt_regs * regs)
+static notrace __kprobes void default_do_nmi(struct pt_regs *regs)
 {
 	unsigned char reason = 0;
 
@@ -762,7 +762,7 @@ static __kprobes void default_do_nmi(str
 
 static int ignore_nmis;
 
-fastcall __kprobes void do_nmi(struct pt_regs * regs, long error_code)
+notrace fastcall __kprobes void do_nmi(struct pt_regs *regs, long error_code)
 {
 	int cpu;
 
Index: linux-compile-i386.git/arch/x86/kernel/nmi_64.c
===================================================================
--- linux-compile-i386.git.orig/arch/x86/kernel/nmi_64.c	2008-01-09 14:07:36.000000000 -0500
+++ linux-compile-i386.git/arch/x86/kernel/nmi_64.c	2008-01-09 14:10:29.000000000 -0500
@@ -314,7 +314,7 @@ void touch_nmi_watchdog(void)
  	touch_softlockup_watchdog();
 }
 
-int __kprobes nmi_watchdog_tick(struct pt_regs * regs, unsigned reason)
+notrace __kprobes int nmi_watchdog_tick(struct pt_regs *regs, unsigned reason)
 {
 	int sum;
 	int touched = 0;

-- 
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/