Commit 6e6012df authored by Yu Kuai's avatar Yu Kuai
Browse files

block: support to recored bio allocation time 

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


CVE: NA

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

A new config BLK_BIO_ALLOC_TIME is added to control the behaviour, and
the time will be used later for blk-io-hierarchy.

Signed-off-by: default avatarYu Kuai <yukuai3@huawei.com>
parent fba98008

block/Kconfig

+3 −0
Original line number Diff line number Diff line
@@ -36,6 +36,9 @@ config BLOCK_LEGACY_AUTOLOAD 
	  created on demand, but scripts that manually create device nodes and

	  then call losetup might rely on this behavior.



config BLK_BIO_ALLOC_TIME

	bool



config BLK_RQ_ALLOC_TIME

	bool

block/bio.c

+4 −0
Original line number Diff line number Diff line
@@ -282,6 +282,10 @@ void bio_init(struct bio *bio, struct block_device *bdev, struct bio_vec *table, 
	bio->bi_max_vecs = max_vecs;

	bio->bi_io_vec = table;

	bio->bi_pool = NULL;



#ifdef CONFIG_BLK_BIO_ALLOC_TIME

	bio->bi_alloc_time_ns = blk_time_get_ns();

#endif

}

EXPORT_SYMBOL(bio_init);

include/linux/blk_types.h

+4 −0
Original line number Diff line number Diff line
@@ -297,7 +297,11 @@ struct bio { 
#endif

	KABI_RESERVE(2)

	KABI_RESERVE(3)

#ifdef CONFIG_BLK_BIO_ALLOC_TIME

	KABI_USE(4, u64 bi_alloc_time_ns)

#else

	KABI_RESERVE(4)

#endif

	KABI_RESERVE(5)

	KABI_RESERVE(6)

	KABI_RESERVE(7)