From: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
To: linux-btrace@vger.kernel.org
Subject: [RFC PATCH 22/39] blktrace: update blk_add_trace_unplug()
Date: Thu, 05 Nov 2020 02:40:21 +0000 [thread overview]
Message-ID: <20201105024038.5831-23-chaitanya.kulkarni@wdc.com> (raw)
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
---
kernel/trace/blktrace.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index 6da8d1c185ee..ffae6abfa606 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -1514,9 +1514,11 @@ 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;
@@ -1527,6 +1529,16 @@ 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();
}
--
2.22.1
next reply other threads:[~2020-11-05 2:40 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-05 2:40 Chaitanya Kulkarni [this message]
-- strict thread matches above, loose matches on Subject: below --
2020-08-25 22:09 [RFC PATCH 22/39] blktrace: update blk_add_trace_unplug() Chaitanya Kulkarni
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