From: Tyrel Datwyler <tyreld@linux.ibm.com> To: james.bottomley@hansenpartnership.com Cc: martin.petersen@oracle.com, linux-scsi@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, brking@linux.ibm.com, Tyrel Datwyler <tyreld@linux.ibm.com> Subject: [PATCH 00/13] ibmvfc: initial MQ development Date: Wed, 25 Nov 2020 19:48:11 -0600 [thread overview] Message-ID: <20201126014824.123831-1-tyreld@linux.ibm.com> (raw) Recent updates in pHyp Firmware and VIOS releases provide new infrastructure towards enabling Subordinate Command Response Queues (Sub-CRQs) such that each Sub-CRQ is a channel backed by an actual hardware queue in the FC stack on the partner VIOS. Sub-CRQs are registered with the firmware via hypercalls and then negotiated with the VIOS via new Management Datagrams (MADs) for channel setup. This initial implementation adds the necessary Sub-CRQ framework and implements the new MADs for negotiating and assigning a set of Sub-CRQs to associated VIOS HW backed channels. The event pool and locking still leverages the legacy single queue implementation, and as such lock contention is problematic when increasing the number of queues. However, this initial work demonstrates a 1.2x factor increase in IOPs when configured with two HW queues despite lock contention. Tyrel Datwyler (13): ibmvfc: add vhost fields and defaults for MQ enablement ibmvfc: define hcall wrapper for registering a Sub-CRQ ibmvfc: add Subordinate CRQ definitions ibmvfc: add alloc/dealloc routines for SCSI Sub-CRQ Channels ibmvfc: add Sub-CRQ IRQ enable/disable routine ibmvfc: add handlers to drain and complete Sub-CRQ responses ibmvfc: define Sub-CRQ interrupt handler routine ibmvfc: map/request irq and register Sub-CRQ interrupt handler ibmvfc: implement channel enquiry and setup commands ibmvfc: advertise client support for using hardware channels ibmvfc: set and track hw queue in ibmvfc_event struct ibmvfc: send commands down HW Sub-CRQ when channelized ibmvfc: register Sub-CRQ handles with VIOS during channel setup drivers/scsi/ibmvscsi/ibmvfc.c | 460 ++++++++++++++++++++++++++++++++- drivers/scsi/ibmvscsi/ibmvfc.h | 37 +++ 2 files changed, 493 insertions(+), 4 deletions(-) -- 2.27.0
WARNING: multiple messages have this Message-ID (diff)
From: Tyrel Datwyler <tyreld@linux.ibm.com> To: james.bottomley@hansenpartnership.com Cc: Tyrel Datwyler <tyreld@linux.ibm.com>, martin.petersen@oracle.com, linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, brking@linux.ibm.com, linuxppc-dev@lists.ozlabs.org Subject: [PATCH 00/13] ibmvfc: initial MQ development Date: Wed, 25 Nov 2020 19:48:11 -0600 [thread overview] Message-ID: <20201126014824.123831-1-tyreld@linux.ibm.com> (raw) Recent updates in pHyp Firmware and VIOS releases provide new infrastructure towards enabling Subordinate Command Response Queues (Sub-CRQs) such that each Sub-CRQ is a channel backed by an actual hardware queue in the FC stack on the partner VIOS. Sub-CRQs are registered with the firmware via hypercalls and then negotiated with the VIOS via new Management Datagrams (MADs) for channel setup. This initial implementation adds the necessary Sub-CRQ framework and implements the new MADs for negotiating and assigning a set of Sub-CRQs to associated VIOS HW backed channels. The event pool and locking still leverages the legacy single queue implementation, and as such lock contention is problematic when increasing the number of queues. However, this initial work demonstrates a 1.2x factor increase in IOPs when configured with two HW queues despite lock contention. Tyrel Datwyler (13): ibmvfc: add vhost fields and defaults for MQ enablement ibmvfc: define hcall wrapper for registering a Sub-CRQ ibmvfc: add Subordinate CRQ definitions ibmvfc: add alloc/dealloc routines for SCSI Sub-CRQ Channels ibmvfc: add Sub-CRQ IRQ enable/disable routine ibmvfc: add handlers to drain and complete Sub-CRQ responses ibmvfc: define Sub-CRQ interrupt handler routine ibmvfc: map/request irq and register Sub-CRQ interrupt handler ibmvfc: implement channel enquiry and setup commands ibmvfc: advertise client support for using hardware channels ibmvfc: set and track hw queue in ibmvfc_event struct ibmvfc: send commands down HW Sub-CRQ when channelized ibmvfc: register Sub-CRQ handles with VIOS during channel setup drivers/scsi/ibmvscsi/ibmvfc.c | 460 ++++++++++++++++++++++++++++++++- drivers/scsi/ibmvscsi/ibmvfc.h | 37 +++ 2 files changed, 493 insertions(+), 4 deletions(-) -- 2.27.0
next reply other threads:[~2020-11-26 1:49 UTC|newest] Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-11-26 1:48 Tyrel Datwyler [this message] 2020-11-26 1:48 ` [PATCH 00/13] ibmvfc: initial MQ development Tyrel Datwyler 2020-11-26 1:48 ` [PATCH 01/13] ibmvfc: add vhost fields and defaults for MQ enablement Tyrel Datwyler 2020-11-26 1:48 ` Tyrel Datwyler 2020-11-27 17:45 ` Brian King 2020-11-27 17:45 ` Brian King 2020-11-30 17:22 ` Tyrel Datwyler 2020-11-30 17:22 ` Tyrel Datwyler 2020-11-26 1:48 ` [PATCH 02/13] ibmvfc: define hcall wrapper for registering a Sub-CRQ Tyrel Datwyler 2020-11-26 1:48 ` Tyrel Datwyler 2020-11-27 17:45 ` Brian King 2020-11-27 17:45 ` Brian King 2020-11-26 1:48 ` [PATCH 03/13] ibmvfc: add Subordinate CRQ definitions Tyrel Datwyler 2020-11-26 1:48 ` Tyrel Datwyler 2020-11-27 17:46 ` Brian King 2020-11-27 17:46 ` Brian King 2020-11-26 1:48 ` [PATCH 04/13] ibmvfc: add alloc/dealloc routines for SCSI Sub-CRQ Channels Tyrel Datwyler 2020-11-26 1:48 ` Tyrel Datwyler 2020-11-27 17:46 ` Brian King 2020-11-27 17:46 ` Brian King 2020-11-30 17:26 ` Tyrel Datwyler 2020-11-30 17:26 ` Tyrel Datwyler 2020-11-26 1:48 ` [PATCH 05/13] ibmvfc: add Sub-CRQ IRQ enable/disable routine Tyrel Datwyler 2020-11-26 1:48 ` Tyrel Datwyler 2020-11-27 17:47 ` Brian King 2020-11-27 17:47 ` Brian King 2020-11-26 1:48 ` [PATCH 06/13] ibmvfc: add handlers to drain and complete Sub-CRQ responses Tyrel Datwyler 2020-11-26 1:48 ` Tyrel Datwyler 2020-11-27 17:47 ` Brian King 2020-11-27 17:47 ` Brian King 2020-11-30 17:27 ` Tyrel Datwyler 2020-11-30 17:27 ` Tyrel Datwyler 2020-11-26 1:48 ` [PATCH 07/13] ibmvfc: define Sub-CRQ interrupt handler routine Tyrel Datwyler 2020-11-26 1:48 ` Tyrel Datwyler 2020-11-27 17:48 ` Brian King 2020-11-27 17:48 ` Brian King 2020-11-26 1:48 ` [PATCH 08/13] ibmvfc: map/request irq and register Sub-CRQ interrupt handler Tyrel Datwyler 2020-11-26 1:48 ` Tyrel Datwyler 2020-11-27 17:48 ` Brian King 2020-11-27 17:48 ` Brian King 2020-11-26 1:48 ` [PATCH 09/13] ibmvfc: implement channel enquiry and setup commands Tyrel Datwyler 2020-11-26 1:48 ` Tyrel Datwyler 2020-11-27 17:49 ` Brian King 2020-11-27 17:49 ` Brian King 2020-11-30 17:29 ` Tyrel Datwyler 2020-11-30 17:29 ` Tyrel Datwyler 2020-11-26 1:48 ` [PATCH 10/13] ibmvfc: advertise client support for using hardware channels Tyrel Datwyler 2020-11-26 1:48 ` Tyrel Datwyler 2020-11-27 17:49 ` Brian King 2020-11-27 17:49 ` Brian King 2020-11-26 1:48 ` [PATCH 11/13] ibmvfc: set and track hw queue in ibmvfc_event struct Tyrel Datwyler 2020-11-26 1:48 ` Tyrel Datwyler 2020-11-27 17:50 ` Brian King 2020-11-27 17:50 ` Brian King 2020-11-26 1:48 ` [PATCH 12/13] ibmvfc: send commands down HW Sub-CRQ when channelized Tyrel Datwyler 2020-11-26 1:48 ` Tyrel Datwyler 2020-11-27 17:50 ` Brian King 2020-11-27 17:50 ` Brian King 2020-11-26 1:48 ` [PATCH 13/13] ibmvfc: register Sub-CRQ handles with VIOS during channel setup Tyrel Datwyler 2020-11-26 1:48 ` Tyrel Datwyler 2020-11-27 17:50 ` Brian King 2020-11-27 17:50 ` Brian King 2020-12-02 12:03 ` [PATCH 00/13] ibmvfc: initial MQ development Hannes Reinecke 2020-12-02 12:03 ` Hannes Reinecke 2020-12-02 17:19 ` Tyrel Datwyler 2020-12-02 17:19 ` Tyrel Datwyler
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