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generated by cgit v1.2.2 (git 2.25.0) at 2025-12-05 04:28:04 -0500
itter Ingo Molnar <mingo@elte.hu> 2009-05-06 04:38:19 -0400 tracing/events: fix concurrent access to ftrace_events list' href='/cgit/cgit.cgi/litmus-rt.git/commit/kernel/trace/trace_event_profile.c?h=wip-shared-lib2&id=20c8928abe70e204bd077ab6cfe23002d7788983'>20c8928abe70 
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/*
 * trace event based perf counter profiling
 *
 * Copyright (C) 2009 Red Hat Inc, Peter Zijlstra <pzijlstr@redhat.com>
 *
 */

#include "trace.h"

int ftrace_profile_enable(int event_id)
{
	struct ftrace_event_call *event;
	int ret = -EINVAL;

	mutex_lock(&event_mutex);
	list_for_each_entry(event, &ftrace_events, list) {
		if (event->id == event_id && event->profile_enable) {
			ret = event->profile_enable(event);
			break;
		}
	}
	mutex_unlock(&event_mutex);

	return ret;
}

void ftrace_profile_disable(int event_id)
{
	struct ftrace_event_call *event;

	mutex_lock(&event_mutex);
	list_for_each_entry(event, &ftrace_events, list) {
		if (event->id == event_id) {
			event->profile_disable(event);
			break;
		}
	}
	mutex_unlock(&event_mutex);
}