diff options
| author | kashyap.desai@lsi.com <kashyap.desai@lsi.com> | 2011-08-04 15:12:46 +0400 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2011-08-27 18:35:18 +0400 |
| commit | a38ae37fdcd77657fb6624b0a0ec57f3d21e2f40 (patch) | |
| tree | 21f2f183fe342a25fca6ec3a37db395573a35b63 | |
| parent | e62cca19a9bbfc72c62632d95a7c01cd6476708c (diff) | |
| download | linux-a38ae37fdcd77657fb6624b0a0ec57f3d21e2f40.tar.xz | |
[SCSI] mptfusion: Avoid out of order Event processing due to cpu migration
Driver will now schedule MPI event using "delay_work_queue_on" to
specify same CPU to be used to schedule work. Earlier it used
"delay_work_queue" which can cause migration of work due to kernel'
timer migration feature.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| -rw-r--r-- | drivers/message/fusion/mptsas.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/drivers/message/fusion/mptsas.c b/drivers/message/fusion/mptsas.c index d21924ba4b1a..074e52254fcd 100644 --- a/drivers/message/fusion/mptsas.c +++ b/drivers/message/fusion/mptsas.c @@ -290,10 +290,11 @@ mptsas_add_fw_event(MPT_ADAPTER *ioc, struct fw_event_work *fw_event, spin_lock_irqsave(&ioc->fw_event_lock, flags); list_add_tail(&fw_event->list, &ioc->fw_event_list); INIT_DELAYED_WORK(&fw_event->work, mptsas_firmware_event_work); - devtprintk(ioc, printk(MYIOC_s_DEBUG_FMT "%s: add (fw_event=0x%p)\n", - ioc->name, __func__, fw_event)); - queue_delayed_work(ioc->fw_event_q, &fw_event->work, - delay); + devtprintk(ioc, printk(MYIOC_s_DEBUG_FMT "%s: add (fw_event=0x%p)" + "on cpuid %d\n", ioc->name, __func__, + fw_event, smp_processor_id())); + queue_delayed_work_on(smp_processor_id(), ioc->fw_event_q, + &fw_event->work, delay); spin_unlock_irqrestore(&ioc->fw_event_lock, flags); } @@ -305,10 +306,11 @@ mptsas_requeue_fw_event(MPT_ADAPTER *ioc, struct fw_event_work *fw_event, unsigned long flags; spin_lock_irqsave(&ioc->fw_event_lock, flags); devtprintk(ioc, printk(MYIOC_s_DEBUG_FMT "%s: reschedule task " - "(fw_event=0x%p)\n", ioc->name, __func__, fw_event)); + "(fw_event=0x%p)on cpuid %d\n", ioc->name, __func__, + fw_event, smp_processor_id())); fw_event->retries++; - queue_delayed_work(ioc->fw_event_q, &fw_event->work, - msecs_to_jiffies(delay)); + queue_delayed_work_on(smp_processor_id(), ioc->fw_event_q, + &fw_event->work, msecs_to_jiffies(delay)); spin_unlock_irqrestore(&ioc->fw_event_lock, flags); } |