[SCSI] hpsa: only do device rescan for certain events
Do no rescan on every events -- way too many rescans are triggered if we don't filter the events. Limit rescans to be triggered by the following set of events: * controller state change * enclosure hot plug * physical drive state change * logical drive state change * redundant controller state change * accelerated io enabled/disabled * accelerated io configuration change Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
parent
23100dd96a
commit
faff6ee053
|
@ -6419,7 +6419,7 @@ static void hpsa_ctlr_needs_rescan(struct ctlr_info *h)
|
|||
return;
|
||||
|
||||
h->events = readl(&(h->cfgtable->event_notify));
|
||||
if (!h->events && !h->drv_req_rescan)
|
||||
if (!(h->events & RESCAN_REQUIRED_EVENT_BITS) && !h->drv_req_rescan)
|
||||
return;
|
||||
|
||||
/*
|
||||
|
|
|
@ -181,6 +181,22 @@ struct ctlr_info {
|
|||
#define HPSATMF_LOG_QRY_TSET (1 << 24)
|
||||
#define HPSATMF_LOG_QRY_ASYNC (1 << 25)
|
||||
u32 events;
|
||||
#define CTLR_STATE_CHANGE_EVENT (1 << 0)
|
||||
#define CTLR_ENCLOSURE_HOT_PLUG_EVENT (1 << 1)
|
||||
#define CTLR_STATE_CHANGE_EVENT_PHYSICAL_DRV (1 << 4)
|
||||
#define CTLR_STATE_CHANGE_EVENT_LOGICAL_DRV (1 << 5)
|
||||
#define CTLR_STATE_CHANGE_EVENT_REDUNDANT_CNTRL (1 << 6)
|
||||
#define CTLR_STATE_CHANGE_EVENT_AIO_ENABLED_DISABLED (1 << 30)
|
||||
#define CTLR_STATE_CHANGE_EVENT_AIO_CONFIG_CHANGE (1 << 31)
|
||||
|
||||
#define RESCAN_REQUIRED_EVENT_BITS \
|
||||
(CTLR_STATE_CHANGE_EVENT | \
|
||||
CTLR_ENCLOSURE_HOT_PLUG_EVENT | \
|
||||
CTLR_STATE_CHANGE_EVENT_PHYSICAL_DRV | \
|
||||
CTLR_STATE_CHANGE_EVENT_LOGICAL_DRV | \
|
||||
CTLR_STATE_CHANGE_EVENT_REDUNDANT_CNTRL | \
|
||||
CTLR_STATE_CHANGE_EVENT_AIO_ENABLED_DISABLED | \
|
||||
CTLR_STATE_CHANGE_EVENT_AIO_CONFIG_CHANGE)
|
||||
int acciopath_status;
|
||||
int drv_req_rescan; /* flag for driver to request rescan event */
|
||||
};
|
||||
|
|
Loading…
Reference in a new issue