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-rw-r--r--block/blktrace.c51
1 files changed, 30 insertions, 21 deletions
diff --git a/block/blktrace.c b/block/blktrace.c
index 4f45b343690..8f5c37b0f80 100644
--- a/block/blktrace.c
+++ b/block/blktrace.c
@@ -24,7 +24,7 @@
#include <linux/debugfs.h>
#include <linux/time.h>
#include <trace/block.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
#include <../kernel/trace/trace_output.h>
static unsigned int blktrace_seq __read_mostly = 1;
@@ -148,11 +148,12 @@ static int act_log_check(struct blk_trace *bt, u32 what, sector_t sector,
/*
* Data direction bit lookup
*/
-static u32 ddir_act[2] __read_mostly = { BLK_TC_ACT(BLK_TC_READ), BLK_TC_ACT(BLK_TC_WRITE) };
+static u32 ddir_act[2] __read_mostly = { BLK_TC_ACT(BLK_TC_READ),
+ BLK_TC_ACT(BLK_TC_WRITE) };
/* The ilog2() calls fall out because they're constant */
-#define MASK_TC_BIT(rw, __name) ( (rw & (1 << BIO_RW_ ## __name)) << \
- (ilog2(BLK_TC_ ## __name) + BLK_TC_SHIFT - BIO_RW_ ## __name) )
+#define MASK_TC_BIT(rw, __name) ((rw & (1 << BIO_RW_ ## __name)) << \
+ (ilog2(BLK_TC_ ## __name) + BLK_TC_SHIFT - BIO_RW_ ## __name))
/*
* The worker for the various blk_add_trace*() types. Fills out a
@@ -221,13 +222,13 @@ static void __blk_add_trace(struct blk_trace *bt, sector_t sector, int bytes,
t->time = ktime_to_ns(ktime_get());
record_it:
/*
- * These two are not needed in ftrace as they are in the
- * generic trace_entry, filled by tracing_generic_entry_update,
- * but for the trace_event->bin() synthesizer benefit we do it
- * here too.
- */
- t->cpu = cpu;
- t->pid = pid;
+ * These two are not needed in ftrace as they are in the
+ * generic trace_entry, filled by tracing_generic_entry_update,
+ * but for the trace_event->bin() synthesizer benefit we do it
+ * here too.
+ */
+ t->cpu = cpu;
+ t->pid = pid;
t->sector = sector;
t->bytes = bytes;
@@ -453,7 +454,8 @@ int do_blk_trace_setup(struct request_queue *q, char *name, dev_t dev,
atomic_set(&bt->dropped, 0);
ret = -EIO;
- bt->dropped_file = debugfs_create_file("dropped", 0444, dir, bt, &blk_dropped_fops);
+ bt->dropped_file = debugfs_create_file("dropped", 0444, dir, bt,
+ &blk_dropped_fops);
if (!bt->dropped_file)
goto err;
@@ -535,10 +537,10 @@ EXPORT_SYMBOL_GPL(blk_trace_setup);
int blk_trace_startstop(struct request_queue *q, int start)
{
- struct blk_trace *bt;
int ret;
+ struct blk_trace *bt = q->blk_trace;
- if ((bt = q->blk_trace) == NULL)
+ if (bt == NULL)
return -EINVAL;
/*
@@ -674,12 +676,14 @@ static void blk_add_trace_rq_issue(struct request_queue *q, struct request *rq)
blk_add_trace_rq(q, rq, BLK_TA_ISSUE);
}
-static void blk_add_trace_rq_requeue(struct request_queue *q, struct request *rq)
+static void blk_add_trace_rq_requeue(struct request_queue *q,
+ struct request *rq)
{
blk_add_trace_rq(q, rq, BLK_TA_REQUEUE);
}
-static void blk_add_trace_rq_complete(struct request_queue *q, struct request *rq)
+static void blk_add_trace_rq_complete(struct request_queue *q,
+ struct request *rq)
{
blk_add_trace_rq(q, rq, BLK_TA_COMPLETE);
}
@@ -716,12 +720,14 @@ static void blk_add_trace_bio_complete(struct request_queue *q, struct bio *bio)
blk_add_trace_bio(q, bio, BLK_TA_COMPLETE);
}
-static void blk_add_trace_bio_backmerge(struct request_queue *q, struct bio *bio)
+static void blk_add_trace_bio_backmerge(struct request_queue *q,
+ struct bio *bio)
{
blk_add_trace_bio(q, bio, BLK_TA_BACKMERGE);
}
-static void blk_add_trace_bio_frontmerge(struct request_queue *q, struct bio *bio)
+static void blk_add_trace_bio_frontmerge(struct request_queue *q,
+ struct bio *bio)
{
blk_add_trace_bio(q, bio, BLK_TA_FRONTMERGE);
}
@@ -731,7 +737,8 @@ static void blk_add_trace_bio_queue(struct request_queue *q, struct bio *bio)
blk_add_trace_bio(q, bio, BLK_TA_QUEUE);
}
-static void blk_add_trace_getrq(struct request_queue *q, struct bio *bio, int rw)
+static void blk_add_trace_getrq(struct request_queue *q,
+ struct bio *bio, int rw)
{
if (bio)
blk_add_trace_bio(q, bio, BLK_TA_GETRQ);
@@ -744,7 +751,8 @@ static void blk_add_trace_getrq(struct request_queue *q, struct bio *bio, int rw
}
-static void blk_add_trace_sleeprq(struct request_queue *q, struct bio *bio, int rw)
+static void blk_add_trace_sleeprq(struct request_queue *q,
+ struct bio *bio, int rw)
{
if (bio)
blk_add_trace_bio(q, bio, BLK_TA_SLEEPRQ);
@@ -752,7 +760,8 @@ static void blk_add_trace_sleeprq(struct request_queue *q, struct bio *bio, int
struct blk_trace *bt = q->blk_trace;
if (bt)
- __blk_add_trace(bt, 0, 0, rw, BLK_TA_SLEEPRQ, 0, 0, NULL);
+ __blk_add_trace(bt, 0, 0, rw, BLK_TA_SLEEPRQ,
+ 0, 0, NULL);
}
}