Commit 21dcd8a7 authored by Yu Kuai's avatar Yu Kuai
Browse files

block: support to record when request is completed 

hulk inclusion
category: feature
bugzilla: https://gitee.com/openeuler/release-management/issues/IB4E8P


CVE: NA

--------------------------------

The time will be reused for completing bio, to avoid getting ns time
again.

Signed-off-by: default avatarYu Kuai <yukuai3@huawei.com>
parent ab67983f

block/blk-mq.c

+8 −2
Original line number Diff line number Diff line
@@ -379,6 +379,7 @@ static struct request *blk_mq_rq_ctx_init(struct blk_mq_alloc_data *data, 


	rq->part = NULL;

	rq->io_start_time_ns = 0;

	rq->io_end_time_ns = 0;

	rq->stats_sectors = 0;

	rq->nr_phys_segments = 0;

#if defined(CONFIG_BLK_DEV_INTEGRITY)
@@ -1045,8 +1046,13 @@ static inline void __blk_mq_end_request_acct(struct request *rq, u64 now) 


inline void __blk_mq_end_request(struct request *rq, blk_status_t error)

{

	if (blk_mq_need_time_stamp(rq))

		__blk_mq_end_request_acct(rq, blk_time_get_ns());

	if (blk_mq_need_time_stamp(rq)) {

		u64 now = rq->io_end_time_ns;



		if (!now)

			now = blk_time_get_ns();

		__blk_mq_end_request_acct(rq, now);

	}



	blk_mq_finish_request(rq);

include/linux/blk-mq.h

+1 −1
Original line number Diff line number Diff line
@@ -200,7 +200,7 @@ struct request { 
#else

	KABI_RESERVE(2)

#endif

	KABI_RESERVE(3)

	KABI_USE(3, u64 io_end_time_ns)

	KABI_RESERVE(4)

	KABI_RESERVE(5)

	KABI_RESERVE(6)