Commit fb9fb015 authored by Steven Rostedt's avatar Steven Rostedt
Browse files

tracing: clean up tracing profiler 



Ingo Molnar suggested clean ups for the profiling code. This patch
makes those updates.

Reported-by: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarSteven Rostedt <srostedt@redhat.com>
parent a2a16d6a

kernel/trace/ftrace.c

+15 −13
Original line number Diff line number Diff line
@@ -271,8 +271,10 @@ struct ftrace_profile_stat { 
#define PROFILES_PER_PAGE					\

	(PROFILE_RECORDS_SIZE / sizeof(struct ftrace_profile))



static int ftrace_profile_bits;

static int ftrace_profile_enabled;

static int ftrace_profile_bits __read_mostly;

static int ftrace_profile_enabled __read_mostly;



/* ftrace_profile_lock - synchronize the enable and disable of the profiler */

static DEFINE_MUTEX(ftrace_profile_lock);



static DEFINE_PER_CPU(struct ftrace_profile_stat, ftrace_profile_stats);
@@ -670,7 +672,7 @@ ftrace_profile_write(struct file *filp, const char __user *ubuf, 
		     size_t cnt, loff_t *ppos)

{

	unsigned long val;

	char buf[64];

	char buf[64];		/* big enough to hold a number */

	int ret;



	if (cnt >= sizeof(buf))
@@ -719,7 +721,7 @@ static ssize_t 
ftrace_profile_read(struct file *filp, char __user *ubuf,

		     size_t cnt, loff_t *ppos)

{

	char buf[64];

	char buf[64];		/* big enough to hold a number */

	int r;



	r = sprintf(buf, "%u\n", ftrace_profile_enabled);