| Message ID | 20230810141947.1236730-3-arnd@kernel.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | None | expand |
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
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 --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) { }