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s390/irq: select HAVE_IRQ_EXIT_ON_IRQ_STACK
author
Heiko Carstens
<hca@linux.ibm.com>
Thu, 10 Dec 2020 21:30:09 +0000
(22:30 +0100)
committer
Heiko Carstens
<hca@linux.ibm.com>
Wed, 16 Dec 2020 13:55:49 +0000
(14:55 +0100)
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>
arch/s390/Kconfig
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diff --git
a/arch/s390/Kconfig
b/arch/s390/Kconfig
index
a60cc52
..
9e8895c
100644
(file)
--- a/
arch/s390/Kconfig
+++ b/
arch/s390/Kconfig
@@
-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