[PATCH v2 1/3] kernel : process fork/exit: export symbol for fork/exit tracing functions

[Wei Chin Tsai]

In ths Patch, we export symbols for two functions of
"sched_process_fork" and "sched_process_exit" for
process statistics. During the system running,
some process will run in a second and then terminate.
We hope that we can capture those processes' jiffies
information for system performance analysis.

Signed-off-by: Wei Chin Tsai <Wei-chin.Tsai@xxxxxxxxxxxx>
---
 kernel/exit.c | 2 ++
 kernel/fork.c | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/kernel/exit.c b/kernel/exit.c
index edb50b4c9972..410a3de14e09 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -81,6 +81,8 @@
  */
 static unsigned int oops_limit = 10000;
 
+EXPORT_TRACEPOINT_SYMBOL_GPL(sched_process_exit);
+
 #ifdef CONFIG_SYSCTL
 static struct ctl_table kern_exit_table[] = {
 	{
diff --git a/kernel/fork.c b/kernel/fork.c
index f81985dcc4bd..8fba356fb7c2 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -142,6 +142,8 @@ DEFINE_PER_CPU(unsigned long, process_counts) = 0;
 
 __cacheline_aligned DEFINE_RWLOCK(tasklist_lock);  /* outer */
 
+EXPORT_TRACEPOINT_SYMBOL_GPL(sched_process_fork);
+
 #ifdef CONFIG_PROVE_RCU
 int lockdep_tasklist_lock_is_held(void)
 {
-- 
2.18.0