[PATCH 2/3][RFC] tracing: Make the trace_clock_local and trace_normalize_local weak

[Steven Rostedt]

From: Steven Rostedt <srostedt@xxxxxxxxxx>

The function trace_clock_local uses sched_clock for taking the time
stamp. For some archs this is not the most efficient method.
Making the trace_clock_local and trace_normalize_local functions weak
allow for archs to override what they are defined as.

This patch also removes some "notrace" annotations from the trace_clock.c
file since the entire trace directory has the -pg option removed
from compiling.

Signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
---
 kernel/trace/trace_clock.c |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/kernel/trace/trace_clock.c b/kernel/trace/trace_clock.c
index 168bf59..2b21f61 100644
--- a/kernel/trace/trace_clock.c
+++ b/kernel/trace/trace_clock.c
@@ -28,7 +28,7 @@
  * Useful for tracing that does not cross to other CPUs nor
  * does it go through idle events.
  */
-u64 notrace trace_clock_local(void)
+u64 __weak trace_clock_local(void)
 {
 	u64 clock;
 	int resched;
@@ -52,7 +52,7 @@ u64 notrace trace_clock_local(void)
  *
  * Normalize the trace_clock_local value.
  */
-void notrace trace_normalize_local(int cpu, u64 *ts)
+void __weak trace_normalize_local(int cpu, u64 *ts)
 {
 	/* nop */
 }
@@ -65,7 +65,7 @@ void notrace trace_normalize_local(int cpu, u64 *ts)
  * jitter between CPUs. So it's a pretty scalable clock, but there
  * can be offsets in the trace data.
  */
-u64 notrace trace_clock(void)
+u64 trace_clock(void)
 {
 	return cpu_clock(raw_smp_processor_id());
 }
@@ -89,7 +89,7 @@ static struct {
 		.lock = (raw_spinlock_t)__RAW_SPIN_LOCK_UNLOCKED,
 	};
 
-u64 notrace trace_clock_global(void)
+u64 trace_clock_global(void)
 {
 	unsigned long flags;
 	int this_cpu;
-- 
1.6.5


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