[PATCH] ftrace: use kasprintf() in ftrace_profile_tracefs()

[Geliang Tang]

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

Signed-off-by: Geliang Tang <geliangt...@163.com>
---
 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 2ece9f1..69aceae 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) {
-- 
2.5.0