diff options
| author | Arjan van de Ven | 2013-02-04 23:44:33 +0100 |
|---|---|---|
| committer | Matthew Wilcox | 2013-04-16 21:05:16 +0200 |
| commit | acb7aa0db09b8abd38abeb84334a8a27a52fbb1b (patch) | |
| tree | 934ba0814d0c5c733e90587e7a985102932f25c8 | |
| parent | NVMe: Add nvme-scsi.c (diff) | |
| download | kernel-qcow2-linux-acb7aa0db09b8abd38abeb84334a8a27a52fbb1b.tar.gz kernel-qcow2-linux-acb7aa0db09b8abd38abeb84334a8a27a52fbb1b.tar.xz kernel-qcow2-linux-acb7aa0db09b8abd38abeb84334a8a27a52fbb1b.zip | |
NVMe: Use round_jiffies_relative() for the periodic, once-per-second timer
The nvme driver has a "once per second" event where the management kthread
wakes up the system and then reschedules itself for 1 second later.
For power efficiency reasons, I'd like this timer to happen together
with other wakeups in the system.
This patch makes the schedule_timeout() call in the kthread use
round_jiffies_relative(), causing the wakeup to at least align with other
"once per X seconds" events in the kernel.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Tested-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
| -rw-r--r-- | drivers/block/nvme-core.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/block/nvme-core.c b/drivers/block/nvme-core.c index a89f7dbefba0..32fdfe9a5156 100644 --- a/drivers/block/nvme-core.c +++ b/drivers/block/nvme-core.c @@ -1309,7 +1309,7 @@ static int nvme_kthread(void *data) } spin_unlock(&dev_list_lock); set_current_state(TASK_INTERRUPTIBLE); - schedule_timeout(HZ); + schedule_timeout(round_jiffies_relative(HZ)); } return 0; } |