genirq: Add might_sleep() to disable_irq()

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With the introduction of threaded interrupt handlers, it is virtually
never safe to call disable_irq() from non-premptible context.

Thus: Update the documentation, add an explicit might_sleep() to catch any
offenders. This is more obvious and straight forward than the implicit
might_sleep() check deeper down in the disable_irq() call chain.

Fixes: 3aa551c9b4 ("genirq: add threaded interrupt handler support")
Signed-off-by: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20221216150441.200533-3-manfred@colorfullife.com

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Manfred Spraul 2022-12-16 16:04:41 +01:00 • committed by Thomas Gleixner

parent b7bfaa761d

commit 17549b0f18

1 changed files with 4 additions and 1 deletions

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kernel/irq/manage.c

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