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Diffstat (limited to 'kernel/trace/blktrace.c')
-rw-r--r--kernel/trace/blktrace.c20
1 files changed, 13 insertions, 7 deletions
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index c286c13bd31a..c221e4c3f625 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -312,8 +312,6 @@ record_it:
static void blk_trace_free(struct blk_trace *bt)
{
- debugfs_remove(bt->msg_file);
- debugfs_remove(bt->dropped_file);
relay_close(bt->rchan);
debugfs_remove(bt->dir);
free_percpu(bt->sequence);
@@ -545,10 +543,8 @@ static int do_blk_trace_setup(struct request_queue *q, char *name, dev_t dev,
INIT_LIST_HEAD(&bt->running_list);
ret = -EIO;
- bt->dropped_file = debugfs_create_file("dropped", 0444, dir, bt,
- &blk_dropped_fops);
-
- bt->msg_file = debugfs_create_file("msg", 0222, dir, bt, &blk_msg_fops);
+ debugfs_create_file("dropped", 0444, dir, bt, &blk_dropped_fops);
+ debugfs_create_file("msg", 0222, dir, bt, &blk_msg_fops);
bt->rchan = relay_open("trace", dir, buts->buf_size,
buts->buf_nr, &blk_relay_callbacks, bt);
@@ -1868,7 +1864,17 @@ void blk_trace_remove_sysfs(struct device *dev)
#ifdef CONFIG_EVENT_TRACING
-void blk_fill_rwbs(char *rwbs, unsigned int op, int bytes)
+/**
+ * blk_fill_rwbs - Fill the buffer rwbs by mapping op to character string.
+ * @rwbs: buffer to be filled
+ * @op: REQ_OP_XXX for the tracepoint
+ *
+ * Description:
+ * Maps the REQ_OP_XXX to character and fills the buffer provided by the
+ * caller with resulting string.
+ *
+ **/
+void blk_fill_rwbs(char *rwbs, unsigned int op)
{
int i = 0;