* [RFC PATCH 21/39] blktrace: update blk_add_trace_plug()
@ 2020-08-25 22:09 Chaitanya Kulkarni
0 siblings, 0 replies; 2+ messages in thread
From: Chaitanya Kulkarni @ 2020-08-25 22:09 UTC (permalink / raw)
To: linux-btrace
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
---
kernel/trace/blktrace.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index 3cd11e1c46d5..dd80f25ebdaf 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -1493,11 +1493,20 @@ static void blk_add_trace_sleeprq(void *ignore,
static void blk_add_trace_plug(void *ignore, struct request_queue *q)
{
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 (likely(!bt) && likely(!bte)) {
+ rcu_read_unlock();
+ return;
+ }
if (bt)
__blk_add_trace(bt, 0, 0, 0, 0, BLK_TA_PLUG, 0, 0, NULL, 0);
+ else if (bte)
+ __blk_add_trace_ext(bte, 0, 0, 0, 0, BLK_TA_PLUG_EXT, 0, 0,
+ NULL, 0, 0);
rcu_read_unlock();
}
--
2.22.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* [RFC PATCH 21/39] blktrace: update blk_add_trace_plug()
@ 2020-11-05 2:40 Chaitanya Kulkarni
0 siblings, 0 replies; 2+ messages in thread
From: Chaitanya Kulkarni @ 2020-11-05 2:40 UTC (permalink / raw)
To: linux-btrace
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
---
kernel/trace/blktrace.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index 31d8f36a0ad8..6da8d1c185ee 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -1493,11 +1493,20 @@ static void blk_add_trace_sleeprq(void *ignore,
static void blk_add_trace_plug(void *ignore, struct request_queue *q)
{
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 (likely(!bt) && likely(!bte)) {
+ rcu_read_unlock();
+ return;
+ }
if (bt)
__blk_add_trace(bt, 0, 0, 0, 0, BLK_TA_PLUG, 0, 0, NULL, 0);
+ else if (bte)
+ __blk_add_trace_ext(bte, 0, 0, 0, 0, BLK_TA_PLUG_EXT, 0, 0,
+ NULL, 0, 0);
rcu_read_unlock();
}
--
2.22.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
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