preempt/dynamic: Provide irqentry_exit_cond_resched() static call

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Provide static call to control IRQ preemption (called in CONFIG_PREEMPT)
so that we can override its behaviour when preempt= is overriden.

Since the default behaviour is full preemption, its call is
initialized to provide IRQ preemption when preempt= isn't passed.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lkml.kernel.org/r/20210118141223.123667-8-frederic@kernel.org

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Peter Zijlstra (Intel) 2021-01-18 15:12:22 +01:00 • committed by Ingo Molnar

parent 2c9a98d3bc

commit 40607ee97e

2 changed files with 13 additions and 1 deletions

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4

include/linux/entry-common.h

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10

kernel/entry/common.c

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