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hpsa: choose number of reply queues more intelligently.

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No sense having 8 or 16 reply queues if you only have 4 cpus,
and likewise no sense limiting to 8 reply queues if you have
many more cpus.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Reviewed-by: Mike Miller <michael.miller@canonical.com>
Reviewed-by: Scott Teel <scott.teel@hp.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Stephen M. Cameron 2014-05-29 10:53:02 -05:00 committed by Christoph Hellwig
parent 7b9235ee19
commit f89439bc2e
2 changed files with 3 additions and 1 deletions
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2
drivers/scsi/hpsa.c
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@ -6164,6 +6164,8 @@ static void hpsa_interrupt_mode(struct ctlr_info *h)
if (pci_find_capability(h->pdev, PCI_CAP_ID_MSIX)) {
dev_info(&h->pdev->dev, "MSIX\n");
h->msix_vector = MAX_REPLY_QUEUES;
if (h->msix_vector > num_online_cpus())
h->msix_vector = num_online_cpus();
err = pci_enable_msix(h->pdev, hpsa_msix_entries,
h->msix_vector);
if (err > 0) {

2
drivers/scsi/hpsa_cmd.h
View File

@ -615,7 +615,7 @@ struct TransTable_struct {
u32 RepQCount;
u32 RepQCtrAddrLow32;
u32 RepQCtrAddrHigh32;
#define MAX_REPLY_QUEUES 8
#define MAX_REPLY_QUEUES 64
struct vals32 RepQAddr[MAX_REPLY_QUEUES];
};