From: Heiko Carstens <hca@xxxxxxxxxxxxx> [ Upstream commit 9ceed9988a8e6a1656ed2bdaa30501cf0f3dd925 ] 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@xxxxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- arch/s390/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index 4a2a12be04c9..dc5c3e6fd200 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -154,6 +154,7 @@ 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 -- 2.30.2
