From 68f40969f0173c02ddc22a40df865c81c29070e4 Mon Sep 17 00:00:00 2001 From: "Steven Rostedt (Red Hat)" Date: Thu, 1 May 2014 12:44:50 -0400 Subject: [PATCH] ftrace: Always inline ftrace_hash_empty() helper function The ftrace_hash_empty() function is a simple test: return !hash || !hash->count; But gcc seems to want to make it a call. As this is in an extreme hot path of the function tracer, there's no reason it needs to be a call. I only wrote it to be a helper function anyway, otherwise it would have been inlined manually. Force gcc to inline it, as it could have also been a macro. Signed-off-by: Steven Rostedt --- kernel/trace/ftrace.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 61f39f8b62e1..98fa931b6864 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -1105,7 +1105,7 @@ struct ftrace_page { static struct ftrace_page *ftrace_pages_start; static struct ftrace_page *ftrace_pages; -static bool ftrace_hash_empty(struct ftrace_hash *hash) +static bool __always_inline ftrace_hash_empty(struct ftrace_hash *hash) { return !hash || !hash->count; } -- GitLab