diff options
Diffstat (limited to 'debian/patches-rt/0178-block-mq-use-cpu_light.patch')
| -rw-r--r-- | debian/patches-rt/0178-block-mq-use-cpu_light.patch | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/debian/patches-rt/0178-block-mq-use-cpu_light.patch b/debian/patches-rt/0178-block-mq-use-cpu_light.patch new file mode 100644 index 000000000..127e4aeb1 --- /dev/null +++ b/debian/patches-rt/0178-block-mq-use-cpu_light.patch @@ -0,0 +1,36 @@ +From 0d89852edf5dc2169659eb46bba1b5dc4f92444b Mon Sep 17 00:00:00 2001 +From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> +Date: Wed, 9 Apr 2014 10:37:23 +0200 +Subject: [PATCH 178/347] block: mq: use cpu_light() +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.246-rt110.tar.xz + +there is a might sleep splat because get_cpu() disables preemption and +later we grab a lock. As a workaround for this we use get_cpu_light(). + +Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> +--- + block/blk-mq.h | 4 ++-- + 1 file changed, 2 insertions(+), 2 deletions(-) + +diff --git a/block/blk-mq.h b/block/blk-mq.h +index 5ad9251627f8..5a96c97991b6 100644 +--- a/block/blk-mq.h ++++ b/block/blk-mq.h +@@ -113,12 +113,12 @@ static inline struct blk_mq_ctx *__blk_mq_get_ctx(struct request_queue *q, + */ + static inline struct blk_mq_ctx *blk_mq_get_ctx(struct request_queue *q) + { +- return __blk_mq_get_ctx(q, get_cpu()); ++ return __blk_mq_get_ctx(q, get_cpu_light()); + } + + static inline void blk_mq_put_ctx(struct blk_mq_ctx *ctx) + { +- put_cpu(); ++ put_cpu_light(); + } + + struct blk_mq_alloc_data { +-- +2.36.1 + |