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| author | Mahesh Rajashekhara <Mahesh.Rajashekhara@pmcs.com> | 2015-03-26 10:41:30 -0400 |
|---|---|---|
| committer | James Bottomley <JBottomley@Odin.com> | 2015-04-09 16:55:21 -0700 |
| commit | ef6162333a6910007c0ae2237e750ffd5bf25811 (patch) | |
| tree | 4c98934c82f74a61ff394aed1f16041129748e62 /drivers/scsi/aacraid/rx.c | |
| parent | f9c4259678cbde854a4e94398d66ef379178fd7c (diff) | |
| download | linux-stable-ef6162333a6910007c0ae2237e750ffd5bf25811.tar.gz linux-stable-ef6162333a6910007c0ae2237e750ffd5bf25811.tar.bz2 linux-stable-ef6162333a6910007c0ae2237e750ffd5bf25811.zip | |
aacraid: performance improvement changes
Signed-off-by: Mahesh Rajashekhara <Mahesh.Rajashekhara@pmcs.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Murthy Bhat <Murthy.Bhat@pmcs.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
Diffstat (limited to 'drivers/scsi/aacraid/rx.c')
| -rw-r--r-- | drivers/scsi/aacraid/rx.c | 14 |
1 files changed, 3 insertions, 11 deletions
diff --git a/drivers/scsi/aacraid/rx.c b/drivers/scsi/aacraid/rx.c index 5c6a8703f535..9570612b80ce 100644 --- a/drivers/scsi/aacraid/rx.c +++ b/drivers/scsi/aacraid/rx.c @@ -400,16 +400,13 @@ int aac_rx_deliver_producer(struct fib * fib) { struct aac_dev *dev = fib->dev; struct aac_queue *q = &dev->queues->queue[AdapNormCmdQueue]; - unsigned long qflags; u32 Index; unsigned long nointr = 0; - spin_lock_irqsave(q->lock, qflags); aac_queue_get( dev, &Index, AdapNormCmdQueue, fib->hw_fib_va, 1, fib, &nointr); - q->numpending++; + atomic_inc(&q->numpending); *(q->headers.producer) = cpu_to_le32(Index + 1); - spin_unlock_irqrestore(q->lock, qflags); if (!(nointr & aac_config.irq_mod)) aac_adapter_notify(dev, AdapNormCmdQueue); @@ -426,15 +423,12 @@ static int aac_rx_deliver_message(struct fib * fib) { struct aac_dev *dev = fib->dev; struct aac_queue *q = &dev->queues->queue[AdapNormCmdQueue]; - unsigned long qflags; u32 Index; u64 addr; volatile void __iomem *device; unsigned long count = 10000000L; /* 50 seconds */ - spin_lock_irqsave(q->lock, qflags); - q->numpending++; - spin_unlock_irqrestore(q->lock, qflags); + atomic_inc(&q->numpending); for(;;) { Index = rx_readl(dev, MUnit.InboundQueue); if (unlikely(Index == 0xFFFFFFFFL)) @@ -442,9 +436,7 @@ static int aac_rx_deliver_message(struct fib * fib) if (likely(Index != 0xFFFFFFFFL)) break; if (--count == 0) { - spin_lock_irqsave(q->lock, qflags); - q->numpending--; - spin_unlock_irqrestore(q->lock, qflags); + atomic_dec(&q->numpending); return -ETIMEDOUT; } udelay(5); |