diff options
| author | Dan Williams <dan.j.williams@intel.com> | 2012-06-22 10:36:30 +0400 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2012-07-20 11:58:54 +0400 |
| commit | f0bf750c2d25c3a2131ececbff63c7878e0e3765 (patch) | |
| tree | ba967c5d28945e76bee78feb24ade328d5b0b3a6 /drivers/scsi/libsas/sas_expander.c | |
| parent | a494fd5bd98bb35d5a9a274fecb768e14ebf499c (diff) | |
| download | linux-f0bf750c2d25c3a2131ececbff63c7878e0e3765.tar.xz | |
[SCSI] libsas: trim sas_task of slow path infrastructure
The timer and the completion are only used for slow path tasks (smp, and
lldd tmfs), yet we incur the allocation space and cpu setup time for
every fast path task.
Cc: Xiangliang Yu <yuxiangl@marvell.com>
Acked-by: Jack Wang <jack_wang@usish.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/libsas/sas_expander.c')
| -rw-r--r-- | drivers/scsi/libsas/sas_expander.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c index 879dbbe69799..efc6e72f09f3 100644 --- a/drivers/scsi/libsas/sas_expander.c +++ b/drivers/scsi/libsas/sas_expander.c @@ -51,14 +51,14 @@ static void smp_task_timedout(unsigned long _task) task->task_state_flags |= SAS_TASK_STATE_ABORTED; spin_unlock_irqrestore(&task->task_state_lock, flags); - complete(&task->completion); + complete(&task->slow_task->completion); } static void smp_task_done(struct sas_task *task) { - if (!del_timer(&task->timer)) + if (!del_timer(&task->slow_task->timer)) return; - complete(&task->completion); + complete(&task->slow_task->completion); } /* Give it some long enough timeout. In seconds. */ @@ -79,7 +79,7 @@ static int smp_execute_task(struct domain_device *dev, void *req, int req_size, break; } - task = sas_alloc_task(GFP_KERNEL); + task = sas_alloc_slow_task(GFP_KERNEL); if (!task) { res = -ENOMEM; break; @@ -91,20 +91,20 @@ static int smp_execute_task(struct domain_device *dev, void *req, int req_size, task->task_done = smp_task_done; - task->timer.data = (unsigned long) task; - task->timer.function = smp_task_timedout; - task->timer.expires = jiffies + SMP_TIMEOUT*HZ; - add_timer(&task->timer); + task->slow_task->timer.data = (unsigned long) task; + task->slow_task->timer.function = smp_task_timedout; + task->slow_task->timer.expires = jiffies + SMP_TIMEOUT*HZ; + add_timer(&task->slow_task->timer); res = i->dft->lldd_execute_task(task, 1, GFP_KERNEL); if (res) { - del_timer(&task->timer); + del_timer(&task->slow_task->timer); SAS_DPRINTK("executing SMP task failed:%d\n", res); break; } - wait_for_completion(&task->completion); + wait_for_completion(&task->slow_task->completion); res = -ECOMM; if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) { SAS_DPRINTK("smp task timed out or aborted\n"); |