diff mbox series

[RFC,21/39] blktrace: update blk_add_trace_unplug()

Message ID 20210225070231.21136-22-chaitanya.kulkarni@wdc.com (mailing list archive)
State New, archived
Headers show
Series blktrace: add block trace extension support | expand

Commit Message

Chaitanya Kulkarni Feb. 25, 2021, 7:02 a.m. UTC 
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
---
 kernel/trace/blktrace.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)
diff mbox series

Patch

diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index 0a9b491bac9e..1f2857cdbcee 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -1438,9 +1438,11 @@  static void blk_add_trace_unplug(void *ignore, struct request_queue *q,
 				    unsigned int depth, bool explicit)
 {
 	struct blk_trace *bt;
+	struct blk_trace_ext *bte;
 
 	rcu_read_lock();
 	bt = rcu_dereference(q->blk_trace);
+	bte = rcu_dereference(q->blk_trace_ext);
 	if (bt) {
 		__be64 rpdu = cpu_to_be64(depth);
 		u32 what;
@@ -1451,6 +1453,16 @@  static void blk_add_trace_unplug(void *ignore, struct request_queue *q,
 			what = BLK_TA_UNPLUG_TIMER;
 
 		__blk_add_trace(bt, 0, 0, 0, 0, what, 0, sizeof(rpdu), &rpdu, 0);
+	} else if (bte) {
+		__be64 rpdu = cpu_to_be64(depth);
+		u64 what;
+
+		if (explicit)
+			what = BLK_TA_UNPLUG_IO_EXT;
+		else
+			what = BLK_TA_UNPLUG_TIMER_EXT;
+		__blk_add_trace_ext(bte, 0, 0, 0, 0, what, 0, sizeof(rpdu),
+				&rpdu, 0, 0);
 	}
 	rcu_read_unlock();
 }