diff options
| author | Christoph Hellwig <hch@lst.de> | 2015-12-07 06:41:11 -0800 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2015-12-11 11:52:26 -0800 |
| commit | ea51190c03150fce4d9e428bfb608abbe0991db8 (patch) | |
| tree | 80c61fdc0817b5f1c5667155cf7256f688b71c63 /lib | |
| parent | 78d0264eb7a938f1eaf59fcb2d3f7da2567369d3 (diff) | |
| download | linux-ea51190c03150fce4d9e428bfb608abbe0991db8.tar.bz2 | |
irq_poll: fold irq_poll_sched_prep into irq_poll_sched
There is no good reason to keep them apart, and this makes using the API
a bit simpler.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/irq_poll.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/lib/irq_poll.c b/lib/irq_poll.c index 88af87971e8c..43a3370a09fd 100644 --- a/lib/irq_poll.c +++ b/lib/irq_poll.c @@ -21,13 +21,17 @@ static DEFINE_PER_CPU(struct list_head, blk_cpu_iopoll); * * Description: * Add this irq_poll structure to the pending poll list and trigger the - * raise of the blk iopoll softirq. The driver must already have gotten a - * successful return from irq_poll_sched_prep() before calling this. + * raise of the blk iopoll softirq. **/ void irq_poll_sched(struct irq_poll *iop) { unsigned long flags; + if (test_bit(IRQ_POLL_F_DISABLE, &iop->state)) + return; + if (!test_and_set_bit(IRQ_POLL_F_SCHED, &iop->state)) + return; + local_irq_save(flags); list_add_tail(&iop->list, this_cpu_ptr(&blk_cpu_iopoll)); __raise_softirq_irqoff(IRQ_POLL_SOFTIRQ); @@ -58,7 +62,7 @@ EXPORT_SYMBOL(__irq_poll_complete); * Description: * If a driver consumes less than the assigned budget in its run of the * iopoll handler, it'll end the polled mode by calling this function. The - * iopoll handler will not be invoked again before irq_poll_sched_prep() + * iopoll handler will not be invoked again before irq_poll_sched() * is called. **/ void irq_poll_complete(struct irq_poll *iop) |