Commit 1793ed93 authored by Jeremy Linton's avatar Jeremy Linton Committed by Steven Rostedt (VMware)
Browse files

trace: rename trace_enum_mutex to trace_eval_mutex 

There is a lock protecting the trace_enum_map, rename
it to reflect the use by more than enums.

Link: http://lkml.kernel.org/r/20170531215653.3240-6-jeremy.linton@arm.com



Signed-off-by: default avatarJeremy Linton <jeremy.linton@arm.com>
Signed-off-by: default avatarSteven Rostedt (VMware) <rostedt@goodmis.org>
parent 23bf8cb8

kernel/trace/trace.c

+7 −7
Original line number Diff line number Diff line
@@ -138,7 +138,7 @@ struct trace_eval_map_tail { 
	const char			*end;	/* points to NULL */

};



static DEFINE_MUTEX(trace_enum_mutex);

static DEFINE_MUTEX(trace_eval_mutex);



/*

 * The trace_eval_maps are saved in an array with two extra elements,
@@ -4785,7 +4785,7 @@ static void *enum_map_start(struct seq_file *m, loff_t *pos) 
	union trace_eval_map_item *v;

	loff_t l = 0;



	mutex_lock(&trace_enum_mutex);

	mutex_lock(&trace_eval_mutex);



	v = trace_eval_maps;

	if (v)
@@ -4800,7 +4800,7 @@ static void *enum_map_start(struct seq_file *m, loff_t *pos) 


static void enum_map_stop(struct seq_file *m, void *v)

{

	mutex_unlock(&trace_enum_mutex);

	mutex_unlock(&trace_eval_mutex);

}



static int enum_map_show(struct seq_file *m, void *v)
@@ -4865,7 +4865,7 @@ trace_insert_enum_map_file(struct module *mod, struct trace_eval_map **start, 
		return;

	}



	mutex_lock(&trace_enum_mutex);

	mutex_lock(&trace_eval_mutex);



	if (!trace_eval_maps)

		trace_eval_maps = map_array;
@@ -4890,7 +4890,7 @@ trace_insert_enum_map_file(struct module *mod, struct trace_eval_map **start, 
	}

	memset(map_array, 0, sizeof(*map_array));



	mutex_unlock(&trace_enum_mutex);

	mutex_unlock(&trace_eval_mutex);

}



static void trace_create_enum_file(struct dentry *d_tracer)
@@ -7768,7 +7768,7 @@ static void trace_module_remove_enums(struct module *mod) 
	if (!mod->num_trace_evals)

		return;



	mutex_lock(&trace_enum_mutex);

	mutex_lock(&trace_eval_mutex);



	map = trace_eval_maps;
@@ -7785,7 +7785,7 @@ static void trace_module_remove_enums(struct module *mod) 
	*last = trace_enum_jmp_to_tail(map)->tail.next;

	kfree(map);

 out:

	mutex_unlock(&trace_enum_mutex);

	mutex_unlock(&trace_eval_mutex);

}

#else

static inline void trace_module_remove_enums(struct module *mod) { }

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