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asm-generic: Conditionally enable do_softirq_own_stack() via Kconfig.

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Remove the CONFIG_PREEMPT_RT symbol from the ifdef around
do_softirq_own_stack() and move it to Kconfig instead.

Enable softirq stacks based on SOFTIRQ_ON_OWN_STACK which depends on
HAVE_SOFTIRQ_ON_OWN_STACK and its default value is set to !PREEMPT_RT.
This ensures that softirq stacks are not used on PREEMPT_RT and avoids
a 'select' statement on an option which has a 'depends' statement.

Link: https://lore.kernel.org/YvN5E%2FPrHfUhggr7@linutronix.de
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Sebastian Andrzej Siewior
2022-08-25 10:25:05 +02:00
committed by Arnd Bergmann
parent b90cb10531
commit 8cbb2b50ee
10 changed files with 13 additions and 10 deletions
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2
arch/s390/include/asm/softirq_stack.h
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@@ -5,7 +5,7 @@
#include <asm/lowcore.h>
#include <asm/stacktrace.h>
#ifndef CONFIG_PREEMPT_RT
#ifdef CONFIG_SOFTIRQ_ON_OWN_STACK
static inline void do_softirq_own_stack(void)
{
call_on_stack(0, S390_lowcore.async_stack, void, __do_softirq);