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authorOmar Sandoval <osandov@fb.com>2017-04-05 22:01:31 +0300
committerJens Axboe <axboe@fb.com>2017-04-07 17:56:46 +0300
commit93252632e828da3e90241a1c0e766556abf71598 (patch)
tree388756bb6862ea8943c87240644a33feb8c5c402 /block/blk-mq-sched.h
parent6917ff0b5bd4139e08a3f3146529dcb3b95ba7a6 (diff)
downloadlinux-93252632e828da3e90241a1c0e766556abf71598.tar.xz
blk-mq-sched: set up scheduler tags when bringing up new queues
If a new hardware queue is added at runtime, we don't allocate scheduler tags for it, leading to a crash. This hooks up the scheduler framework to blk_mq_{init,exit}_hctx() to make sure everything gets properly initialized/freed. Signed-off-by: Omar Sandoval <osandov@fb.com> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block/blk-mq-sched.h')
-rw-r--r--block/blk-mq-sched.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/block/blk-mq-sched.h b/block/blk-mq-sched.h
index 873f9af5a35b..19db25e0c95a 100644
--- a/block/blk-mq-sched.h
+++ b/block/blk-mq-sched.h
@@ -35,6 +35,11 @@ void blk_mq_sched_move_to_dispatch(struct blk_mq_hw_ctx *hctx,
int blk_mq_init_sched(struct request_queue *q, struct elevator_type *e);
void blk_mq_sched_teardown(struct request_queue *q);
+int blk_mq_sched_init_hctx(struct request_queue *q, struct blk_mq_hw_ctx *hctx,
+ unsigned int hctx_idx);
+void blk_mq_sched_exit_hctx(struct request_queue *q, struct blk_mq_hw_ctx *hctx,
+ unsigned int hctx_idx);
+
int blk_mq_sched_init(struct request_queue *q);
static inline bool