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| author | James Smart <jsmart2021@gmail.com> | 2019-01-28 20:14:31 +0100 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2019-02-06 04:29:49 +0100 |
| commit | 6a828b0f6192b4930894925d1c1d0dc1f1d99e6e (patch) | |
| tree | 30837f3b1f484f4b6357b173b173e3e3b8672464 /drivers/scsi/lpfc/lpfc_hw4.h | |
| parent | scsi: lpfc: Fix setting affinity hints to correlate with hardware queues (diff) | |
| download | linux-6a828b0f6192b4930894925d1c1d0dc1f1d99e6e.tar.xz linux-6a828b0f6192b4930894925d1c1d0dc1f1d99e6e.zip | |
scsi: lpfc: Support non-uniform allocation of MSIX vectors to hardware queues
So far MSIX vector allocation assumed it would be 1:1 with hardware
queues. However, there are several reasons why fewer MSIX vectors may be
allocated than hardware queues such as the platform being out of vectors or
adapter limits being less than cpu count.
This patch reworks the MSIX/EQ relationships with the per-cpu hardware
queues so they can function independently. MSIX vectors will be equitably
split been cpu sockets/cores and then the per-cpu hardware queues will be
mapped to the vectors most efficient for them.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_hw4.h')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_hw4.h | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/scsi/lpfc/lpfc_hw4.h b/drivers/scsi/lpfc/lpfc_hw4.h index cd39845c909f..665852291a4f 100644 --- a/drivers/scsi/lpfc/lpfc_hw4.h +++ b/drivers/scsi/lpfc/lpfc_hw4.h @@ -211,9 +211,8 @@ struct lpfc_sli_intf { #define LPFC_DEF_IMAX 150000 #define LPFC_MIN_CPU_MAP 0 -#define LPFC_MAX_CPU_MAP 2 +#define LPFC_MAX_CPU_MAP 1 #define LPFC_HBA_CPU_MAP 1 -#define LPFC_DRIVER_CPU_MAP 2 /* Default */ /* PORT_CAPABILITIES constants. */ #define LPFC_MAX_SUPPORTED_PAGES 8 |