From: Aaron Tomlin <atomlin@atomlin.com>
To: mpi3mr-linuxdrv.pdl@broadcom.com
Cc: kashyap.desai@broadcom.com, sumit.saxena@broadcom.com,
sreekanth.reddy@broadcom.com,
James.Bottomley@HansenPartnership.com,
martin.petersen@oracle.com, atomlin@atomlin.com,
linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [RFC PATCH v2 0/1] scsi: mpi3mr: Introduce smp_affinity_enable module parameter
Date: Sat, 31 May 2025 21:40:55 -0400 [thread overview]
Message-ID: <20250601014056.128716-1-atomlin@atomlin.com> (raw)
I noticed that the Linux MegaRAID driver for SAS based RAID controllers has
the same aforementioned module parameter. Despite the potential performance
drawbacks, I suspect it would be useful with the Broadcom MPI3 Storage
Controller Driver too, to respect the default IRQ affinity.
Please let me know your thoughts.
Changes since v1 [1]
- Addressed WARN_ON() in pci_alloc_irq_vectors_affinity()
due to affd != NULL when smp_affinity_enable = 0
- Avoid unnecessary complexity for a single queue
[1]: https://lore.kernel.org/lkml/20250428094141.1385188-2-atomlin@atomlin.com/
Aaron Tomlin (1):
scsi: mpi3mr: Introduce smp_affinity_enable module parameter
drivers/scsi/mpi3mr/mpi3mr.h | 1 +
drivers/scsi/mpi3mr/mpi3mr_fw.c | 14 ++++++++++++--
drivers/scsi/mpi3mr/mpi3mr_os.c | 14 +++++++++++---
3 files changed, 24 insertions(+), 5 deletions(-)
--
2.49.0
next reply other threads:[~2025-06-01 1:41 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-01 1:40 Aaron Tomlin [this message]
2025-06-01 1:40 ` [RFC PATCH v2 1/1] " Aaron Tomlin
2025-06-16 20:51 ` Martin K. Petersen
2025-06-17 7:18 ` John Garry
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