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authorSteve Wise <swise@opengridcomputing.com>2019-02-06 13:11:49 -0800
committerJason Gunthorpe <jgg@mellanox.com>2019-02-19 20:52:19 -0700
commit4133b013faf31fbab61d4deb626fcb4390042eba (patch)
treeb447d1d1f060082dd66aecea061c60e4193b2d42 /lib/irq_poll.c
parent66920e1b25861d5bd99192489f6da7183529285e (diff)
lib/irq_poll: Support schedules in non-interrupt contexts
Do not assume irq_poll_sched() is called from an interrupt context only. So use raise_softirq_irqoff() instead of __raise_softirq_irqoff() so it will kick the ksoftirqd if the schedule is from a non-interrupt context. This is required for RDMA drivers, like soft iwarp, that generate cq completion notifications in a workqueue or kthread context. Without this change, siw completion notifications to the ULP can take several hundred usecs, depending on the system load. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'lib/irq_poll.c')
-rw-r--r--lib/irq_poll.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/irq_poll.c b/lib/irq_poll.c
index 86a709954f5a..2f17b488d58e 100644
--- a/lib/irq_poll.c
+++ b/lib/irq_poll.c
@@ -35,7 +35,7 @@ void irq_poll_sched(struct irq_poll *iop)
local_irq_save(flags);
list_add_tail(&iop->list, this_cpu_ptr(&blk_cpu_iopoll));
- __raise_softirq_irqoff(IRQ_POLL_SOFTIRQ);
+ raise_softirq_irqoff(IRQ_POLL_SOFTIRQ);
local_irq_restore(flags);
}
EXPORT_SYMBOL(irq_poll_sched);