ftrace: annotate core code that should not be traced
Arnaldo Carvalho de Melo [Mon, 12 May 2008 19:20:41 +0000 (21:20 +0200)]
Mark with "notrace" functions in core code that should not be
traced.  The "notrace" attribute will prevent gcc from adding
a call to ftrace on the annotated funtions.

Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

lib/smp_processor_id.c

index 6c90fb9..e555ab6 100644 (file)
@@ -7,7 +7,7 @@
 #include <linux/kallsyms.h>
 #include <linux/sched.h>
 
-unsigned int debug_smp_processor_id(void)
+notrace unsigned int debug_smp_processor_id(void)
 {
        unsigned long preempt_count = preempt_count();
        int this_cpu = raw_smp_processor_id();