[SCSI] qla2xxx: Resolve a performance issue in interrupt

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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>

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Anirban Chakraborty 2009-06-10 13:55:11 -07:00 • committed by James Bottomley

parent babdb788f7

commit 43fac4d97a

1 changed files with 9 additions and 6 deletions

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drivers/scsi/qla2xxx/qla_isr.c

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