diff mbox series

[02/17,RESEND] irq_work: consolidate arch_irq_work_raise prototypes

Message ID 20230810141947.1236730-3-arnd@kernel.org (mailing list archive)
State Handled Elsewhere, archived
Headers show
Series -Wmissing-prototype warning fixes | expand

Commit Message

Arnd Bergmann Aug. 10, 2023, 2:19 p.m. UTC
From: Arnd Bergmann <arnd@arndb.de>

The prototype was hidden on x86, which causes a warning:

kernel/irq_work.c:72:13: error: no previous prototype for 'arch_irq_work_raise' [-Werror=missing-prototypes]

Fix this by providing it in only one place that is always visible.

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Palmer Dabbelt <palmer@rivosinc.com>
Acked-by: Guo Ren <guoren@kernel.org>
Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/arm/include/asm/irq_work.h     | 2 --
 arch/arm64/include/asm/irq_work.h   | 2 --
 arch/csky/include/asm/irq_work.h    | 2 +-
 arch/powerpc/include/asm/irq_work.h | 1 -
 arch/riscv/include/asm/irq_work.h   | 2 +-
 arch/s390/include/asm/irq_work.h    | 2 --
 arch/x86/include/asm/irq_work.h     | 1 -
 include/linux/irq_work.h            | 3 +++
 8 files changed, 5 insertions(+), 10 deletions(-)

Comments

Masahiro Yamada Aug. 11, 2023, 10:10 p.m. UTC | #1
On Fri, Aug 11, 2023 at 10:00 AM Arnd Bergmann <arnd@kernel.org> wrote:
>
> From: Arnd Bergmann <arnd@arndb.de>
>
> The prototype was hidden on x86, which causes a warning:


What do you mean by "hidden on x86"?

arch_irq_work_raise() was declared on 7 architectures,
including x86.




>
> kernel/irq_work.c:72:13: error: no previous prototype for 'arch_irq_work_raise' [-Werror=missing-prototypes]
>
> Fix this by providing it in only one place that is always visible.
>
> Acked-by: Catalin Marinas <catalin.marinas@arm.com>
> Acked-by: Palmer Dabbelt <palmer@rivosinc.com>
> Acked-by: Guo Ren <guoren@kernel.org>
> Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
>  arch/arm/include/asm/irq_work.h     | 2 --
>  arch/arm64/include/asm/irq_work.h   | 2 --
>  arch/csky/include/asm/irq_work.h    | 2 +-
>  arch/powerpc/include/asm/irq_work.h | 1 -
>  arch/riscv/include/asm/irq_work.h   | 2 +-
>  arch/s390/include/asm/irq_work.h    | 2 --
>  arch/x86/include/asm/irq_work.h     | 1 -
>  include/linux/irq_work.h            | 3 +++
>  8 files changed, 5 insertions(+), 10 deletions(-)
>


--
Best Regards
Masahiro Yamada
Arnd Bergmann Aug. 12, 2023, 7:34 a.m. UTC | #2
On Sat, Aug 12, 2023, at 00:10, Masahiro Yamada wrote:
> On Fri, Aug 11, 2023 at 10:00 AM Arnd Bergmann <arnd@kernel.org> wrote:
>>
>> From: Arnd Bergmann <arnd@arndb.de>
>>
>> The prototype was hidden on x86, which causes a warning:
>
>
> What do you mean by "hidden on x86"?
>
> arch_irq_work_raise() was declared on 7 architectures,
> including x86.
>

I meant hidden in some configurations. Specifically, x86
only declares the function when it overrides it for
CONFIG_X86_LOCAL_APIC, while without that option the generic
stub still gets compiled but is never declared.

    Arnd
diff mbox series

Patch

diff --git a/arch/arm/include/asm/irq_work.h b/arch/arm/include/asm/irq_work.h
index 3149e4dc1b540..8895999834cc0 100644
--- a/arch/arm/include/asm/irq_work.h
+++ b/arch/arm/include/asm/irq_work.h
@@ -9,6 +9,4 @@  static inline bool arch_irq_work_has_interrupt(void)
 	return is_smp();
 }
 
-extern void arch_irq_work_raise(void);
-
 #endif /* _ASM_ARM_IRQ_WORK_H */
diff --git a/arch/arm64/include/asm/irq_work.h b/arch/arm64/include/asm/irq_work.h
index 81bbfa3a035bd..a1020285ea750 100644
--- a/arch/arm64/include/asm/irq_work.h
+++ b/arch/arm64/include/asm/irq_work.h
@@ -2,8 +2,6 @@ 
 #ifndef __ASM_IRQ_WORK_H
 #define __ASM_IRQ_WORK_H
 
-extern void arch_irq_work_raise(void);
-
 static inline bool arch_irq_work_has_interrupt(void)
 {
 	return true;
diff --git a/arch/csky/include/asm/irq_work.h b/arch/csky/include/asm/irq_work.h
index 33aaf39d6f94f..d39fcc1f5395f 100644
--- a/arch/csky/include/asm/irq_work.h
+++ b/arch/csky/include/asm/irq_work.h
@@ -7,5 +7,5 @@  static inline bool arch_irq_work_has_interrupt(void)
 {
 	return true;
 }
-extern void arch_irq_work_raise(void);
+
 #endif /* __ASM_CSKY_IRQ_WORK_H */
diff --git a/arch/powerpc/include/asm/irq_work.h b/arch/powerpc/include/asm/irq_work.h
index b8b0be8f1a07e..c6d3078bd8c3b 100644
--- a/arch/powerpc/include/asm/irq_work.h
+++ b/arch/powerpc/include/asm/irq_work.h
@@ -6,6 +6,5 @@  static inline bool arch_irq_work_has_interrupt(void)
 {
 	return true;
 }
-extern void arch_irq_work_raise(void);
 
 #endif /* _ASM_POWERPC_IRQ_WORK_H */
diff --git a/arch/riscv/include/asm/irq_work.h b/arch/riscv/include/asm/irq_work.h
index b53891964ae03..b27a4d64fc6a0 100644
--- a/arch/riscv/include/asm/irq_work.h
+++ b/arch/riscv/include/asm/irq_work.h
@@ -6,5 +6,5 @@  static inline bool arch_irq_work_has_interrupt(void)
 {
 	return IS_ENABLED(CONFIG_SMP);
 }
-extern void arch_irq_work_raise(void);
+
 #endif /* _ASM_RISCV_IRQ_WORK_H */
diff --git a/arch/s390/include/asm/irq_work.h b/arch/s390/include/asm/irq_work.h
index 603783766d0ab..f00c9f610d5a8 100644
--- a/arch/s390/include/asm/irq_work.h
+++ b/arch/s390/include/asm/irq_work.h
@@ -7,6 +7,4 @@  static inline bool arch_irq_work_has_interrupt(void)
 	return true;
 }
 
-void arch_irq_work_raise(void);
-
 #endif /* _ASM_S390_IRQ_WORK_H */
diff --git a/arch/x86/include/asm/irq_work.h b/arch/x86/include/asm/irq_work.h
index 800ffce0db29e..6b4d36c951655 100644
--- a/arch/x86/include/asm/irq_work.h
+++ b/arch/x86/include/asm/irq_work.h
@@ -9,7 +9,6 @@  static inline bool arch_irq_work_has_interrupt(void)
 {
 	return boot_cpu_has(X86_FEATURE_APIC);
 }
-extern void arch_irq_work_raise(void);
 #else
 static inline bool arch_irq_work_has_interrupt(void)
 {
diff --git a/include/linux/irq_work.h b/include/linux/irq_work.h
index 8cd11a2232605..136f2980cba30 100644
--- a/include/linux/irq_work.h
+++ b/include/linux/irq_work.h
@@ -66,6 +66,9 @@  void irq_work_sync(struct irq_work *work);
 void irq_work_run(void);
 bool irq_work_needs_cpu(void);
 void irq_work_single(void *arg);
+
+void arch_irq_work_raise(void);
+
 #else
 static inline bool irq_work_needs_cpu(void) { return false; }
 static inline void irq_work_run(void) { }