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ftrace: Always inline ftrace_hash_empty() helper function

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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 <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt (Red Hat) 2014-05-01 12:44:50 -04:00 committed by Steven Rostedt
parent 19eab4a472
commit 68f40969f0
1 changed files with 1 additions and 1 deletions
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2
kernel/trace/ftrace.c
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@ -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;
}