Commit f7e944b4 authored by Yu Kuai's avatar Yu Kuai
Browse files

block: support to recored bio allocation task 

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


CVE: NA

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

A new config BLK_BIO_ALLOC_TASK is added to control the behaviour, and
the task_struct will be used later for blk-io-hierarchy to dump thread
info to user.

Signed-off-by: default avatarYu Kuai <yukuai3@huawei.com>
parent 6e6012df

block/Kconfig

+3 −0
Original line number Diff line number Diff line
@@ -39,6 +39,9 @@ config BLOCK_LEGACY_AUTOLOAD 
config BLK_BIO_ALLOC_TIME

	bool



config BLK_BIO_ALLOC_TASK

	bool



config BLK_RQ_ALLOC_TIME

	bool

block/bio.c

+11 −0
Original line number Diff line number Diff line
@@ -223,6 +223,13 @@ void bio_uninit(struct bio *bio) 
		bio_integrity_free(bio);



	bio_crypt_free_ctx(bio);



#ifdef CONFIG_BLK_BIO_ALLOC_TASK

	if (bio->pid) {

		put_pid(bio->pid);

		bio->pid = NULL;

	}

#endif

}

EXPORT_SYMBOL(bio_uninit);
@@ -286,6 +293,10 @@ void bio_init(struct bio *bio, struct block_device *bdev, struct bio_vec *table, 
#ifdef CONFIG_BLK_BIO_ALLOC_TIME

	bio->bi_alloc_time_ns = blk_time_get_ns();

#endif



#ifdef CONFIG_BLK_BIO_ALLOC_TASK

	bio->pid = get_pid(task_pid(current));

#endif

}

EXPORT_SYMBOL(bio_init);

include/linux/blk_types.h

+4 −0
Original line number Diff line number Diff line
@@ -302,7 +302,11 @@ struct bio { 
#else

	KABI_RESERVE(4)

#endif

#ifdef CONFIG_BLK_BIO_ALLOC_TASK

	KABI_USE(5, struct pid *pid)

#else

	KABI_RESERVE(5)

#endif

	KABI_RESERVE(6)

	KABI_RESERVE(7)

	KABI_RESERVE(8)