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[SCSI] qla2xxx: Resolve a performance issue in interrupt
authorAnirban Chakraborty <anirban.chakraborty@qlogic.com>
Wed, 10 Jun 2009 20:55:11 +0000 (13:55 -0700)
committerJames Bottomley <James.Bottomley@HansenPartnership.com>
Mon, 15 Jun 2009 15:09:32 +0000 (10:09 -0500)
commit43fac4d97a1a30085f1cae61aa565e5e7e5e5d7d
tree52a532aac2f925bc104bc78aab29727fd3a29742tree | snapshot (tar.gz zip)
parentbabdb788f7ec1a782a52240a5f6dae568f32565fcommit | diff
[SCSI] qla2xxx: Resolve a performance issue in interrupt

Reverted back a change in qla*_intr_handler code that caused an increase in
cpu cycles by allowing interrupts to occur while the instance hardware lock
was being held.  Fix by taking the lock in irqsave mode.

Reported-and-tested-by: Douglas W. Styner <douglas.w.styner@intel.com>
Signed-off-by: Anirban Chakraborty <anirban.chakraborty@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
drivers/scsi/qla2xxx/qla_isr.c diff | blob | blame | history