Chaitanya Kulkarni 39dfe84451 nvme: split nvme_alloc_request() ... Right now nvme_alloc_request() allocates a request from block layer based on the value of the qid. When qid set to NVME_QID_ANY it used blk_mq_alloc_request() else blk_mq_alloc_request_hctx(). The function nvme_alloc_request() is called from different context, The only place where it uses non NVME_QID_ANY value is for fabrics connect commands :- nvme_submit_sync_cmd() NVME_QID_ANY nvme_features() NVME_QID_ANY nvme_sec_submit() NVME_QID_ANY nvmf_reg_read32() NVME_QID_ANY nvmf_reg_read64() NVME_QID_ANY nvmf_reg_write32() NVME_QID_ANY nvmf_connect_admin_queue() NVME_QID_ANY nvme_submit_user_cmd() NVME_QID_ANY nvme_alloc_request() nvme_keep_alive() NVME_QID_ANY nvme_alloc_request() nvme_timeout() NVME_QID_ANY nvme_alloc_request() nvme_delete_queue() NVME_QID_ANY nvme_alloc_request() nvmet_passthru_execute_cmd() NVME_QID_ANY nvme_alloc_request() nvmf_connect_io_queue() QID __nvme_submit_sync_cmd() nvme_alloc_request() With passthru nvme_alloc_request() now falls into the I/O fast path such that blk_mq_alloc_request_hctx() is never gets called and that adds additional branch check in fast path. Split the nvme_alloc_request() into nvme_alloc_request() and nvme_alloc_request_qid(). Replace each call of the nvme_alloc_request() with NVME_QID_ANY param with a call to newly added nvme_alloc_request() without NVME_QID_ANY. Replace a call to nvme_alloc_request() with QID param with a call to newly added nvme_alloc_request() and nvme_alloc_request_qid() based on the qid value set in the __nvme_submit_sync_cmd(). Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> Reviewed-by: Logan Gunthorpe <logang@deltatee.com> Signed-off-by: Christoph Hellwig <hch@lst.de>		2020-12-01 20:36:35 +01:00
..
admin-cmd.c	nvmet: handle keep-alive timer when kato is modified by a set features cmd	2020-09-27 09:14:19 +02:00
configfs.c	nvmet: add passthru io timeout value attr	2020-12-01 20:36:35 +01:00
core.c	nvmet: fix a NULL pointer dereference when tracing the flush command	2020-10-27 10:02:50 +01:00
discovery.c	nvmet: introduce flags member in nvmet_fabrics_ops	2020-07-08 16:16:17 +02:00
fabrics-cmd.c	nvmet: add metadata/T10-PI support	2020-05-27 07:12:40 +02:00
fc.c	nvmet-fc: fix missing check for no hostport struct	2020-09-27 09:14:19 +02:00
fcloop.c	nvme-fcloop: add sysfs attribute to inject command drop	2020-12-01 20:36:34 +01:00
io-cmd-bdev.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
io-cmd-file.c	nvmet: rename nvmet_check_data_len to nvmet_check_transfer_len	2020-05-27 07:12:39 +02:00
Kconfig	nvmet: introduce the passthru Kconfig option	2020-07-29 07:45:21 +02:00
loop.c	nvme: use consistent macro name for timeout	2020-12-01 20:36:35 +01:00
Makefile	nvmet: add passthru code to process commands	2020-07-29 07:45:21 +02:00
nvmet.h	nvmet: add passthru io timeout value attr	2020-12-01 20:36:35 +01:00
passthru.c	nvme: split nvme_alloc_request()	2020-12-01 20:36:35 +01:00
rdma.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
tcp.c	nvmet-tcp: have queue io_work context run on sock incoming cpu	2020-09-27 09:14:18 +02:00
trace.c	nvmet: trace: parse Get LBA Status command in detail	2019-08-29 12:55:01 -07:00
trace.h	nvmet: fix a NULL pointer dereference when tracing the flush command	2020-10-27 10:02:50 +01:00