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tracing: Fix memory leak on instance deletion 

When an instance is created, it also gets a snapshot ring buffer
allocated (with minimum of pages). But when it is deleted the snapshot
buffer is not. There was a helper function added to match the allocation
of these ring buffers to a way to free them, but it wasn't used by
the deletion of an instance. Using that helper function solves this
memory leak.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt (Red Hat) 2014-06-06 23:17:28 -04:00 committed by Steven Rostedt
parent 23aaa3c18e
commit a9fcaaac37
1 changed files with 1 additions and 2 deletions
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3
kernel/trace/trace.c
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@ -6349,8 +6349,7 @@ static int instance_delete(const char *name)
event_trace_del_tracer(tr);
ftrace_destroy_function_files(tr);
debugfs_remove_recursive(tr->dir);
free_percpu(tr->trace_buffer.data);
ring_buffer_free(tr->trace_buffer.buffer);
free_trace_buffers(tr);
kfree(tr->name);
kfree(tr);