linux-kernel - Re: [PATCH 1/2] ARM: perf: Mark all accessor functions inline

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Message-ID: <ZFouMZpJEY23l9ZY@FVFF77S0Q05N>
Date:   Tue, 9 May 2023 12:27:45 +0100
From:   Mark Rutland <mark.rutland@....com>
To:     Geert Uytterhoeven <geert+renesas@...der.be>
Cc:     Marc Zyngier <maz@...nel.org>,
        Russell King <linux@...linux.org.uk>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] ARM: perf: Mark all accessor functions inline

On Mon, May 08, 2023 at 06:05:18PM +0200, Geert Uytterhoeven wrote:
> When just including <asm/arm_pmuv3.h>:
> 
>     arch/arm/include/asm/arm_pmuv3.h:110:13: error: ‘write_pmevtypern’ defined but not used [-Werror=unused-function]
>       110 | static void write_pmevtypern(int n, unsigned long val)
> 	  |             ^~~~~~~~~~~~~~~~
>     arch/arm/include/asm/arm_pmuv3.h:103:13: error: ‘write_pmevcntrn’ defined but not used [-Werror=unused-function]
>       103 | static void write_pmevcntrn(int n, unsigned long val)
> 	  |             ^~~~~~~~~~~~~~~
>     arch/arm/include/asm/arm_pmuv3.h:95:22: error: ‘read_pmevcntrn’ defined but not used [-Werror=unused-function]
>        95 | static unsigned long read_pmevcntrn(int n)
> 	  |                      ^~~~~~~~~~~~~~
> 
> Fix this by adding the missing "inline" keywords to the three accessor
> functions that lack them.
> 
> Fixes: 009d6dc87a568db6 ("ARM: perf: Allow the use of the PMUv3 driver on 32bit ARM")
> Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>

Acked-by: Mark Rutland <mark.rutland@....com>

Mark.

> ---
>  arch/arm/include/asm/arm_pmuv3.h | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/arch/arm/include/asm/arm_pmuv3.h b/arch/arm/include/asm/arm_pmuv3.h
> index 78d3d4b82c6c2598..f4db3e75d75f024e 100644
> --- a/arch/arm/include/asm/arm_pmuv3.h
> +++ b/arch/arm/include/asm/arm_pmuv3.h
> @@ -92,7 +92,7 @@
>  
>  #define RETURN_READ_PMEVCNTRN(n) \
>  	return read_sysreg(PMEVCNTR##n)
> -static unsigned long read_pmevcntrn(int n)
> +static inline unsigned long read_pmevcntrn(int n)
>  {
>  	PMEVN_SWITCH(n, RETURN_READ_PMEVCNTRN);
>  	return 0;
> @@ -100,14 +100,14 @@ static unsigned long read_pmevcntrn(int n)
>  
>  #define WRITE_PMEVCNTRN(n) \
>  	write_sysreg(val, PMEVCNTR##n)
> -static void write_pmevcntrn(int n, unsigned long val)
> +static inline void write_pmevcntrn(int n, unsigned long val)
>  {
>  	PMEVN_SWITCH(n, WRITE_PMEVCNTRN);
>  }
>  
>  #define WRITE_PMEVTYPERN(n) \
>  	write_sysreg(val, PMEVTYPER##n)
> -static void write_pmevtypern(int n, unsigned long val)
> +static inline void write_pmevtypern(int n, unsigned long val)
>  {
>  	PMEVN_SWITCH(n, WRITE_PMEVTYPERN);
>  }
> -- 
> 2.34.1
>