linux-kernel - [PATCH v1 3/4] powerpc/kexec: Declare kexec

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Message-Id: <094983ee851644165b7700c73cac63cfe20596cd.1646413435.git.christophe.leroy@csgroup.eu>
Date:   Fri,  4 Mar 2022 18:04:04 +0100
From:   Christophe Leroy <christophe.leroy@...roup.eu>
To:     Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>
Cc:     Christophe Leroy <christophe.leroy@...roup.eu>,
        linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: [PATCH v1 3/4] powerpc/kexec: Declare kexec_paca static

kexec_paca is exclusively used in kexec/core_64.c

Declare is static.

Signed-off-by: Christophe Leroy <christophe.leroy@...roup.eu>
---
 arch/powerpc/include/asm/asm-prototypes.h | 2 --
 arch/powerpc/kexec/core_64.c              | 2 +-
 2 files changed, 1 insertion(+), 3 deletions(-)

diff --git a/arch/powerpc/include/asm/asm-prototypes.h b/arch/powerpc/include/asm/asm-prototypes.h
index 283bfeb8bf4c..83ef106923e6 100644
--- a/arch/powerpc/include/asm/asm-prototypes.h
+++ b/arch/powerpc/include/asm/asm-prototypes.h
@@ -24,9 +24,7 @@ extern struct task_struct *secondary_current;
 void start_secondary(void *unused);
 
 /* kexec */
-struct paca_struct;
 struct kimage;
-extern struct paca_struct kexec_paca;
 void kexec_copy_flush(struct kimage *image);
 
 /* pseries hcall tracing */
diff --git a/arch/powerpc/kexec/core_64.c b/arch/powerpc/kexec/core_64.c
index 635b5fc30b53..2d49dce129f2 100644
--- a/arch/powerpc/kexec/core_64.c
+++ b/arch/powerpc/kexec/core_64.c
@@ -291,7 +291,7 @@ static union thread_union kexec_stack __init_task_data =
  * For similar reasons to the stack above, the kexecing CPU needs to be on a
  * static PACA; we switch to kexec_paca.
  */
-struct paca_struct kexec_paca;
+static struct paca_struct kexec_paca;
 
 /* Our assembly helper, in misc_64.S */
 extern void kexec_sequence(void *newstack, unsigned long start,
-- 
2.34.1