diff options
Diffstat (limited to 'kernel/trace/blktrace.c')
| -rw-r--r-- | kernel/trace/blktrace.c | 18 |
1 files changed, 5 insertions, 13 deletions
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c index 84763e0c83cf..8cea91d248d9 100644 --- a/kernel/trace/blktrace.c +++ b/kernel/trace/blktrace.c @@ -28,6 +28,8 @@ #include <linux/uaccess.h> #include <linux/list.h> +#include "../../block/blk.h" + #include <trace/events/block.h> #include "trace_output.h" @@ -292,9 +294,6 @@ record_it: local_irq_restore(flags); } -static struct dentry *blk_tree_root; -static DEFINE_MUTEX(blk_tree_mutex); - static void blk_trace_free(struct blk_trace *bt) { debugfs_remove(bt->msg_file); @@ -468,17 +467,10 @@ static int do_blk_trace_setup(struct request_queue *q, char *name, dev_t dev, ret = -ENOENT; - mutex_lock(&blk_tree_mutex); - if (!blk_tree_root) { - blk_tree_root = debugfs_create_dir("block", NULL); - if (!blk_tree_root) { - mutex_unlock(&blk_tree_mutex); - goto err; - } - } - mutex_unlock(&blk_tree_mutex); + if (!blk_debugfs_root) + goto err; - dir = debugfs_create_dir(buts->name, blk_tree_root); + dir = debugfs_create_dir(buts->name, blk_debugfs_root); if (!dir) goto err; |