Commit cdabce2e authored by Jiafei Pan's avatar Jiafei Pan Committed by Thomas Gleixner

softirq: Add debug check to __raise_softirq_irqoff()

__raise_softirq_irqoff() must be called with interrupts disabled to protect
the per CPU softirq pending state update against an interrupt and soft
interrupt handling on return from interrupt.

Add a lockdep assertion to validate the calling convention.

[ tglx: Massaged changelog ]
Signed-off-by: default avatarJiafei Pan <Jiafei.Pan@nxp.com>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20200814045522.45719-1-Jiafei.Pan@nxp.com
parent 856deb86
...@@ -481,6 +481,7 @@ void raise_softirq(unsigned int nr) ...@@ -481,6 +481,7 @@ void raise_softirq(unsigned int nr)
void __raise_softirq_irqoff(unsigned int nr) void __raise_softirq_irqoff(unsigned int nr)
{ {
lockdep_assert_irqs_disabled();
trace_softirq_raise(nr); trace_softirq_raise(nr);
or_softirq_pending(1UL << nr); or_softirq_pending(1UL << nr);
} }
......
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