linux-kernel - [PATCH v2] LoongArch: signal.c: add header file to fix build error

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Date: Thu, 21 Dec 2023 20:45:54 -0800
From: Randy Dunlap <rdunlap@...radead.org>
To: linux-kernel@...r.kernel.org
Cc: Randy Dunlap <rdunlap@...radead.org>,
	Huacai Chen <chenhuacai@...nel.org>,
	WANG Xuerui <kernel@...0n.name>,
	loongarch@...ts.linux.dev,
	Kent Overstreet <kent.overstreet@...il.com>
Subject: [PATCH v2] LoongArch: signal.c: add header file to fix build error

loongarch's signal.c uses rseq_signal_deliver() so it should
pull in the appropriate header to prevent a build error:

../arch/loongarch/kernel/signal.c: In function 'handle_signal':
../arch/loongarch/kernel/signal.c:1034:9: error: implicit declaration of function 'rseq_signal_deliver' [-Werror=implicit-function-declaration]
 1034 |         rseq_signal_deliver(ksig, regs);
      |         ^~~~~~~~~~~~~~~~~~~

Fixes: b74baf4ad05b ("LoongArch: Add signal handling support")
Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
Cc: Huacai Chen <chenhuacai@...nel.org>
Cc: WANG Xuerui <kernel@...0n.name>
Cc: loongarch@...ts.linux.dev
Cc: Kent Overstreet <kent.overstreet@...il.com>
---
v2: repair Cc: list

 arch/loongarch/kernel/signal.c |    1 +
 1 file changed, 1 insertion(+)

diff -- a/arch/loongarch/kernel/signal.c b/arch/loongarch/kernel/signal.c
--- a/arch/loongarch/kernel/signal.c
+++ b/arch/loongarch/kernel/signal.c
@@ -15,6 +15,7 @@
 #include <linux/context_tracking.h>
 #include <linux/entry-common.h>
 #include <linux/irqflags.h>
+#include <linux/rseq.h>
 #include <linux/sched.h>
 #include <linux/mm.h>
 #include <linux/personality.h>