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s390/irq: select HAVE_IRQ_EXIT_ON_IRQ_STACK

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irq_exit() is always called on async stack. Therefore select
HAVE_IRQ_EXIT_ON_IRQ_STACK and get a tiny optimization in
invoke_softirq().

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
This commit is contained in:
Heiko Carstens
2020-12-16 14:55:49 +01:00
parent dd6cfe5532
commit 9ceed9988a
1 changed files with 1 additions and 0 deletions
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arch/s390/Kconfig
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@@ -153,6 +153,7 @@ config S390
select HAVE_FUTEX_CMPXCHG if FUTEX
select HAVE_GCC_PLUGINS
select HAVE_GENERIC_VDSO
select HAVE_IRQ_EXIT_ON_IRQ_STACK
select HAVE_KERNEL_BZIP2
select HAVE_KERNEL_GZIP
select HAVE_KERNEL_LZ4