Commit cabbb25d authored by Richael Zhuang's avatar Richael Zhuang Committed by Tomasz Zawadzki
Browse files

bdev: add API to get submit tsc of a bdev I/O 



Add API spdk_bdev_io_get_submit_tsc to get submit tsc of a bdev I/O,
which can be used in bdev modules to avoid calling expensive
spdk_get_ticks().

Change-Id: Ifbcecb1bc663344997c5e73b72a1dfb5d0422946
Signed-off-by: default avatarRichael Zhuang <richael.zhuang@arm.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/14989


Tested-by: default avatarSPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Mellanox Build Bot
Reviewed-by: default avatarJim Harris <james.r.harris@intel.com>
Reviewed-by: default avatarAleksey Marchuk <alexeymar@nvidia.com>
parent c2735134

CHANGELOG.md

+2 −0
Original line number Diff line number Diff line
@@ -25,6 +25,8 @@ required bdev. 


New `spdk_bdev_copy_blocks` and `spdk_bdev_get_max_copy` APIs to support copy commands.



A new API `spdk_bdev_io_get_submit_tsc` was added to get the submit_tsc of the bdev I/O.



## v22.09



### accel

include/spdk/bdev_module.h

+9 −0
Original line number Diff line number Diff line
@@ -1077,6 +1077,15 @@ struct spdk_thread *spdk_bdev_io_get_thread(struct spdk_bdev_io *bdev_io); 
 */

struct spdk_io_channel *spdk_bdev_io_get_io_channel(struct spdk_bdev_io *bdev_io);



/**

 * Get the submit_tsc of a bdev I/O.

 *

 * \param bdev_io The bdev I/O to get the submit_tsc.

 *

 * \return The submit_tsc of the specified bdev I/O.

 */

uint64_t spdk_bdev_io_get_submit_tsc(struct spdk_bdev_io *bdev_io);



/**

 * Resize for a bdev.

 *

lib/bdev/bdev.c

+6 −0
Original line number Diff line number Diff line
@@ -3095,6 +3095,12 @@ spdk_bdev_io_type_supported(struct spdk_bdev *bdev, enum spdk_bdev_io_type io_ty 
	return supported;

}



uint64_t

spdk_bdev_io_get_submit_tsc(struct spdk_bdev_io *bdev_io)

{

	return bdev_io->internal.submit_tsc;

}



int

spdk_bdev_dump_info_json(struct spdk_bdev *bdev, struct spdk_json_write_ctx *w)

{

lib/bdev/spdk_bdev.map

+1 −0
Original line number Diff line number Diff line
@@ -134,6 +134,7 @@ 
	spdk_bdev_io_complete_aio_status;

	spdk_bdev_io_get_thread;

	spdk_bdev_io_get_io_channel;

	spdk_bdev_io_get_submit_tsc;

	spdk_bdev_notify_blockcnt_change;

	spdk_scsi_nvme_translate;

	spdk_bdev_module_list_add;