Re: [PATCH v2 0/5] ibmvfc: MQ preparatory locking work
On Wed, 6 Jan 2021 14:18:30 -0600, Tyrel Datwyler wrote: > The ibmvfc driver in its current form relies heavily on the host_lock. This > patchset introduces a genric queue with its own queue lock and sent/free event > list locks. This generic queue allows the driver to decouple the primary queue > and future subordinate queues from the host lock reducing lock contention > while > also relaxing locking for submissions and completions to simply the list lock > of > the queue in question. > > [...] Applied to 5.12/scsi-queue, thanks! [1/5] ibmvfc: define generic queue structure for CRQs https://git.kernel.org/mkp/scsi/c/f8968665af28 [2/5] ibmvfc: make command event pool queue specific https://git.kernel.org/mkp/scsi/c/e4b26f3db864 [3/5] ibmvfc: define per-queue state/list locks https://git.kernel.org/mkp/scsi/c/57e80e0bc108 [4/5] ibmvfc: complete commands outside the host/queue lock https://git.kernel.org/mkp/scsi/c/1f4a4a19508d [5/5] ibmvfc: relax locking around ibmvfc_queuecommand https://git.kernel.org/mkp/scsi/c/654080d02edb -- Martin K. Petersen Oracle Linux Engineering
Re: [PATCH v2 0/5] ibmvfc: MQ preparatory locking work
Tyrel, > The ibmvfc driver in its current form relies heavily on the > host_lock. This patchset introduces a genric queue with its own queue > lock and sent/free event list locks. This generic queue allows the > driver to decouple the primary queue and future subordinate queues > from the host lock reducing lock contention while also relaxing > locking for submissions and completions to simply the list lock of the > queue in question. Applied to 5.12/scsi-staging, thanks! -- Martin K. Petersen Oracle Linux Engineering
[PATCH v2 0/5] ibmvfc: MQ preparatory locking work
The ibmvfc driver in its current form relies heavily on the host_lock. This patchset introduces a genric queue with its own queue lock and sent/free event list locks. This generic queue allows the driver to decouple the primary queue and future subordinate queues from the host lock reducing lock contention while also relaxing locking for submissions and completions to simply the list lock of the queue in question. changes in v2: * Patch 4: Made ibmvfc_locked_done() static fixing a no-prototype warning Tyrel Datwyler (5): ibmvfc: define generic queue structure for CRQs ibmvfc: make command event pool queue specific ibmvfc: define per-queue state/list locks ibmvfc: complete commands outside the host/queue lock ibmvfc: relax locking around ibmvfc_queuecommand drivers/scsi/ibmvscsi/ibmvfc.c | 379 ++--- drivers/scsi/ibmvscsi/ibmvfc.h | 54 +++-- 2 files changed, 286 insertions(+), 147 deletions(-) -- 2.27.0
