From: Heiko Carstens <hca@linux.ibm.com>
Date: Thu, 10 Dec 2020 21:30:09 +0000 (+0100)
Subject: s390/irq: select HAVE_IRQ_EXIT_ON_IRQ_STACK
X-Git-Tag: v5.11-rc1~67^2~5
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=9ceed9988a8e6a1656ed2bdaa30501cf0f3dd925;p=thirdparty%2Fkernel%2Flinux.git

s390/irq: select HAVE_IRQ_EXIT_ON_IRQ_STACK

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>
---

diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index a60cc523d8100..9e8895cb9ee79 100644
--- 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