提交 acb7aa0d 编写于 作者: A Arjan van de Ven 提交者: Matthew Wilcox

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: NArjan van de Ven <arjan@linux.intel.com>
Tested-by: NKeith Busch <keith.busch@intel.com>
Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
上级 5d0f6131
......@@ -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;
}
......
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