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| author | Dick Kennedy <dick.kennedy@broadcom.com> | 2020-05-02 00:43:06 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2020-05-08 05:47:24 +0300 |
| commit | 3048e3e805e36a61cf02f185b02b4144f46d8ff3 (patch) | |
| tree | 4e4ad1788e1a7b8260076869438851532330b0c6 /drivers/scsi/lpfc/lpfc_sli4.h | |
| parent | f809da6db68a8be49e317f0ccfbced1af9258839 (diff) | |
| download | linux-3048e3e805e36a61cf02f185b02b4144f46d8ff3.tar.xz | |
scsi: lpfc: Change default queue allocation for reduced memory consumption
By default, the driver attempts to allocate a hdwq per logical cpu in order
to provide good cpu affinity. Some systems have extremely high cpu counts
and this can significantly raise memory consumption.
In testing on x86 platforms (non-AMD) it is found that sharing of a hdwq by
a physical cpu and its HT cpu can occur with little performance
degredation. By sharing, the hdwq count can be halved, significantly
reducing the memory overhead.
Change the default behavior of the driver on non-AMD x86 platforms to
share a hdwq by the cpu and its HT cpu.
Link: https://lore.kernel.org/r/20200501214310.91713-6-jsmart2021@gmail.com
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_sli4.h')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_sli4.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/scsi/lpfc/lpfc_sli4.h b/drivers/scsi/lpfc/lpfc_sli4.h index 8da7429e385a..4decb53d81c3 100644 --- a/drivers/scsi/lpfc/lpfc_sli4.h +++ b/drivers/scsi/lpfc/lpfc_sli4.h @@ -920,7 +920,7 @@ struct lpfc_sli4_hba { struct lpfc_vector_map_info *cpu_map; uint16_t num_possible_cpu; uint16_t num_present_cpu; - struct cpumask numa_mask; + struct cpumask irq_aff_mask; uint16_t curr_disp_cpu; struct lpfc_eq_intr_info __percpu *eq_info; #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |