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| author | Thomas Gleixner <tglx@linutronix.de> | 2021-02-10 00:40:51 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2021-02-10 23:34:16 +0100 |
| commit | 624db9eabc74597f682c0651047a25b54f7260a1 (patch) | |
| tree | ff8d74fd46fa59d8424244026fdda562fcb21128 /arch/x86/kernel/irq_64.c | |
| parent | 52d743f3b71265e14560a38f4c835d07b9c6fc4c (diff) | |
| download | lwn-624db9eabc74597f682c0651047a25b54f7260a1.tar.gz lwn-624db9eabc74597f682c0651047a25b54f7260a1.zip | |
x86: Select CONFIG_HAVE_IRQ_EXIT_ON_IRQ_STACK
Now that all invocations of irq_exit_rcu() happen on the irq stack, turn on
CONFIG_HAVE_IRQ_EXIT_ON_IRQ_STACK which causes the core code to invoke
__do_softirq() directly without going through do_softirq_own_stack().
That means do_softirq_own_stack() is only invoked from task context which
means it can't be on the irq stack. Remove the conditional from
run_softirq_on_irqstack_cond() and rename the function accordingly.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20210210002513.068033456@linutronix.de
Diffstat (limited to 'arch/x86/kernel/irq_64.c')
| -rw-r--r-- | arch/x86/kernel/irq_64.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/irq_64.c b/arch/x86/kernel/irq_64.c index 8d9f9a1b49e5..b88fdb9686e6 100644 --- a/arch/x86/kernel/irq_64.c +++ b/arch/x86/kernel/irq_64.c @@ -76,5 +76,5 @@ int irq_init_percpu_irqstack(unsigned int cpu) void do_softirq_own_stack(void) { - run_softirq_on_irqstack_cond(); + run_softirq_on_irqstack(); } |