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| author | Sreekanth Reddy <sreekanth.reddy@broadcom.com> | 2021-02-02 12:58:32 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2021-02-09 05:53:12 +0300 |
| commit | 664f0dce20580837c7fa136a03b3a9fc43034104 (patch) | |
| tree | 7283d40ee7518976ada38e5900ce651862d0d3a6 /drivers/scsi/dc395x.h | |
| parent | d309ae07327d19ce613629a0535e9a11a8ff5127 (diff) | |
| download | linux-664f0dce20580837c7fa136a03b3a9fc43034104.tar.xz | |
scsi: mpt3sas: Add support for shared host tagset for CPU hotplug
MPT Fusion adapters can steer completions to individual queues and we now
have support for shared host-wide tags in the I/O stack. The addition of
the host-wide tags allows us to enable multiqueue support for MPT Fusion
adapters. Once host-wise tags are enabled, the CPU hotplug feature is also
supported.
Allow use of host-wide tags to be disabled through the "host_tagset_enable"
module parameter. Once we do not have any major performance regressions
using host-wide tags, we will drop the hand-crafted interrupt affinity
settings.
Performance is meeting expectations. About 3.1M IOPS using 24 Drive SSD on
Aero controllers.
Link: https://lore.kernel.org/r/20210202095832.23072-1-sreekanth.reddy@broadcom.com
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/dc395x.h')
0 files changed, 0 insertions, 0 deletions