tracing, sched: mark get_parent_ip() notrace

Impact: remove overly redundant tracing entries

When tracer is "function" or "function_graph", way too much
"get_parent_ip" entries are recorded in ring_buffer.

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Acked-by: Steven Rostedt <srostedt@redhat.com>
LKML-Reference: <49D458B1.5000703@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/kernel/sched.c b/kernel/sched.c
index 5724508..e90e70e 100644 (file)
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -4846,7 +4846,7 @@ void scheduler_tick(void)
 #endif
 }
 
-unsigned long get_parent_ip(unsigned long addr)
+notrace unsigned long get_parent_ip(unsigned long addr)
 {
        if (in_lock_functions(addr)) {
                addr = CALLER_ADDR2;