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From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Fri, 15 Nov 2019 21:37:22 +0100
Subject: [PATCH] block: Don't disable interrupts in trigger_softirq()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.4/older/patches-5.4.3-rt1.tar.xz
trigger_softirq() is always invoked as a SMP-function call which is
always invoked with disables interrupts.
Don't disable interrupt in trigger_softirq() because interrupts are
already disabled.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
block/blk-softirq.c | 4 ----
1 file changed, 4 deletions(-)
--- a/block/blk-softirq.c
+++ b/block/blk-softirq.c
@@ -42,17 +42,13 @@ static __latent_entropy void blk_done_so
static void trigger_softirq(void *data)
{
struct request *rq = data;
- unsigned long flags;
struct list_head *list;
- local_irq_save(flags);
list = this_cpu_ptr(&blk_cpu_done);
list_add_tail(&rq->ipi_list, list);
if (list->next == &rq->ipi_list)
raise_softirq_irqoff(BLOCK_SOFTIRQ);
-
- local_irq_restore(flags);
}
/*
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