| From 750cf7f4bbe5c4faa48a0bde42e0cc9b901e3dcf Mon Sep 17 00:00:00 2001 |
| From: Sasha Levin <sashal@kernel.org> |
| Date: Thu, 10 Dec 2020 22:30:09 +0100 |
| Subject: s390/irq: select HAVE_IRQ_EXIT_ON_IRQ_STACK |
| |
| From: Heiko Carstens <hca@linux.ibm.com> |
| |
| [ 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@linux.ibm.com> |
| Signed-off-by: Sasha Levin <sashal@kernel.org> |
| --- |
| 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 |
| |
