Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-22 12:11:40 +00:00
Code Issues Packages Projects Releases Wiki Activity

softirq: Add debug check to __raise_softirq_irqoff()

Browse Source 
__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: Jiafei Pan <Jiafei.Pan@nxp.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20200814045522.45719-1-Jiafei.Pan@nxp.com
This commit is contained in:
Jiafei Pan 2020-08-14 12:55:22 +08:00 committed by Thomas Gleixner
parent 856deb866d
commit cdabce2e3d
1 changed files with 1 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
kernel/softirq.c
View File

@ -481,6 +481,7 @@ void raise_softirq(unsigned int nr)
void __raise_softirq_irqoff(unsigned int nr)
{
lockdep_assert_irqs_disabled();
trace_softirq_raise(nr);
or_softirq_pending(1UL << nr);
}