1 files changed, 0 insertions, 120 deletions
diff --git a/kernel/trace/trace_event_profile.c b/kernel/trace/trace_event_profile.c
deleted file mode 100644
index dd44b876886..00000000000
--- a/kernel/trace/trace_event_profile.c
+++ /dev/null
@@ -1,120 +0,0 @@
-/*
- * trace event based perf counter profiling
- *
- * Copyright (C) 2009 Red Hat Inc, Peter Zijlstra <pzijlstr@redhat.com>
- *
- */
-
-#include <linux/module.h>
-#include "trace.h"
-
-/*
- * We can't use a size but a type in alloc_percpu()
- * So let's create a dummy type that matches the desired size
- */
-typedef struct {char buf[FTRACE_MAX_PROFILE_SIZE];} profile_buf_t;
-
-char		*trace_profile_buf;
-EXPORT_SYMBOL_GPL(trace_profile_buf);
-
-char		*trace_profile_buf_nmi;
-EXPORT_SYMBOL_GPL(trace_profile_buf_nmi);
-
-/* Count the events in use (per event id, not per instance) */
-static int	total_profile_count;
-
-static int ftrace_profile_enable_event(struct ftrace_event_call *event)
-{
-	char *buf;
-	int ret = -ENOMEM;
-
-	if (atomic_inc_return(&event->profile_count))
-		return 0;
-
-	if (!total_profile_count++) {
-		buf = (char *)alloc_percpu(profile_buf_t);
-		if (!buf)
-			goto fail_buf;
-
-		rcu_assign_pointer(trace_profile_buf, buf);
-
-		buf = (char *)alloc_percpu(profile_buf_t);
-		if (!buf)
-			goto fail_buf_nmi;
-
-		rcu_assign_pointer(trace_profile_buf_nmi, buf);
-	}
-
-	ret = event->profile_enable();
-	if (!ret)
-		return 0;
-
-	kfree(trace_profile_buf_nmi);
-fail_buf_nmi:
-	kfree(trace_profile_buf);
-fail_buf:
-	total_profile_count--;
-	atomic_dec(&event->profile_count);
-
-	return ret;
-}
-
-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 &&
-		    try_module_get(event->mod)) {
-			ret = ftrace_profile_enable_event(event);
-			break;
-		}
-	}
-	mutex_unlock(&event_mutex);
-
-	return ret;
-}
-
-static void ftrace_profile_disable_event(struct ftrace_event_call *event)
-{
-	char *buf, *nmi_buf;
-
-	if (!atomic_add_negative(-1, &event->profile_count))
-		return;
-
-	event->profile_disable();
-
-	if (!--total_profile_count) {
-		buf = trace_profile_buf;
-		rcu_assign_pointer(trace_profile_buf, NULL);
-
-		nmi_buf = trace_profile_buf_nmi;
-		rcu_assign_pointer(trace_profile_buf_nmi, NULL);
-
-		/*
-		 * Ensure every events in profiling have finished before
-		 * releasing the buffers
-		 */
-		synchronize_sched();
-
-		free_percpu(buf);
-		free_percpu(nmi_buf);
-	}
-}
-
-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) {
-			ftrace_profile_disable_event(event);
-			module_put(event->mod);
-			break;
-		}
-	}
-	mutex_unlock(&event_mutex);
-}