[RFC PATCH 13/39] blktrace: update blk_add_trace_bio()

From: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
To: linux-btrace@vger.kernel.org
Subject: [RFC PATCH 13/39] blktrace: update blk_add_trace_bio()
Date: Tue, 25 Aug 2020 22:09:43 +0000	[thread overview]
Message-ID: <20200825221009.6457-14-chaitanya.kulkarni@wdc.com> (raw)

Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
---
 kernel/trace/blktrace.c | 21 ++++++++++++++++-----
 1 file changed, 16 insertions(+), 5 deletions(-)

diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index 19519852ce89..c2e72cbcef4a 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -1261,20 +1261,31 @@ static void blk_add_trace_rq_complete(void *ignore, struct request *rq,
  *
  **/
 static void blk_add_trace_bio(struct request_queue *q, struct bio *bio,
-			      u32 what, int error)
+			      u64 what, int error)
 {
 	struct blk_trace *bt;
+	struct blk_trace_ext *bte;
 
 	rcu_read_lock();
 	bt = rcu_dereference(q->blk_trace);
-	if (likely(!bt)) {
+	bte = rcu_dereference(q->blk_trace_ext);
+	if (likely(!bt) && likely(!bte)) {
 		rcu_read_unlock();
 		return;
 	}
 
-	__blk_add_trace(bt, bio->bi_iter.bi_sector, bio->bi_iter.bi_size,
-			bio_op(bio), bio->bi_opf, what, error, 0, NULL,
-			blk_trace_bio_get_cgid(q, bio));
+	if (q->blk_trace) {
+		__blk_add_trace(bt, bio->bi_iter.bi_sector,
+				bio->bi_iter.bi_size, bio_op(bio),
+				bio->bi_opf, (u32)what, error, 0, NULL,
+				blk_trace_bio_get_cgid(q, bio));
+	} else if (q->blk_trace_ext) {
+		__blk_add_trace_ext(bte, bio->bi_iter.bi_sector,
+				    bio->bi_iter.bi_size, bio_op(bio),
+				    bio->bi_opf, what, error, 0, NULL,
+				    blk_trace_bio_get_cgid(q, bio),
+				    bio_prio(bio));
+	}
 	rcu_read_unlock();
 }
 
-- 
2.22.1
