linux-kernel - [PATCH 4.9 20/31] MIPS: Select HAVE_IRQ_EXIT_ON_IRQ

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Message-Id: <20170416080222.862805812@linuxfoundation.org>
Date:   Sun, 16 Apr 2017 10:04:11 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Matt Redfearn <matt.redfearn@...tec.com>,
        "Jason A. Donenfeld" <jason@...c4.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        linux-mips@...ux-mips.org, Ralf Baechle <ralf@...ux-mips.org>,
        Amit Pundir <amit.pundir@...aro.org>
Subject: [PATCH 4.9 20/31] MIPS: Select HAVE_IRQ_EXIT_ON_IRQ_STACK

4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Matt Redfearn <matt.redfearn@...tec.com>

commit 3cc3434fd6307d06b53b98ce83e76bf9807689b9 upstream.

Since do_IRQ is now invoked on a separate IRQ stack, we select
HAVE_IRQ_EXIT_ON_IRQ_STACK so that softirq's may be invoked directly
from irq_exit(), rather than requiring do_softirq_own_stack.

Signed-off-by: Matt Redfearn <matt.redfearn@...tec.com>
Acked-by: Jason A. Donenfeld <jason@...c4.com>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: linux-mips@...ux-mips.org
Cc: linux-kernel@...r.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14744/
Signed-off-by: Ralf Baechle <ralf@...ux-mips.org>
Signed-off-by: Amit Pundir <amit.pundir@...aro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/mips/Kconfig |    1 +
 1 file changed, 1 insertion(+)

--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -9,6 +9,7 @@ config MIPS
 	select HAVE_CONTEXT_TRACKING
 	select HAVE_GENERIC_DMA_COHERENT
 	select HAVE_IDE
+	select HAVE_IRQ_EXIT_ON_IRQ_STACK
 	select HAVE_OPROFILE
 	select HAVE_PERF_EVENTS
 	select PERF_USE_VMALLOC