[for-next][PATCH 3/8] ftrace: Use kasprintf() in ftrace_profile_tracefs()

From: Steven Rostedt
Date: Sat Mar 19 2016 - 10:16:49 EST


From: Geliang Tang <geliangtang@xxxxxxx>

Use kasprintf() instead of kmalloc() and snprintf().

Link: http://lkml.kernel.org/r/135a7bc36e51fd9eaa57124dd2140285b771f738.1458050835.git.geliangtang@xxxxxxx

Acked-by: Namhyung Kim <namhyung@xxxxxxxxxx>
Signed-off-by: Geliang Tang <geliangtang@xxxxxxx>
Signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
---
kernel/trace/ftrace.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index d3850cbb840f..6a93faafbea4 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -1030,8 +1030,7 @@ static __init void ftrace_profile_tracefs(struct dentry *d_tracer)
for_each_possible_cpu(cpu) {
stat = &per_cpu(ftrace_profile_stats, cpu);

- /* allocate enough for function name + cpu number */
- name = kmalloc(32, GFP_KERNEL);
+ name = kasprintf(GFP_KERNEL, "function%d", cpu);
if (!name) {
/*
* The files created are permanent, if something happens
@@ -1043,7 +1042,6 @@ static __init void ftrace_profile_tracefs(struct dentry *d_tracer)
return;
}
stat->stat = function_stats;
- snprintf(name, 32, "function%d", cpu);
stat->stat.name = name;
ret = register_stat_tracer(&stat->stat);
if (ret) {
--
2.7.0