Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Date:   Tue, 9 May 2023 12:28:06 +0100
From:   Mark Rutland <mark.rutland@arm.com>
To:     Geert Uytterhoeven <geert+renesas@glider.be>
Cc:     Marc Zyngier <maz@kernel.org>,
        Russell King <linux@armlinux.org.uk>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will@kernel.org>,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/2] arm64: perf: Mark all accessor functions inline
Message-ID: <ZFouRoZiAVyoMZ9y@FVFF77S0Q05N>
References: <3a7d9bc7470aa2d85696ee9765c74f8c03fb5454.1683561482.git.geert+renesas@glider.be>
 <d53a19043c0c3bd25f6c203e73a2fb08a9661824.1683561482.git.geert+renesas@glider.be>
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Disposition: inline
Content-Transfer-Encoding: 8bit
In-Reply-To: <d53a19043c0c3bd25f6c203e73a2fb08a9661824.1683561482.git.geert+renesas@glider.be>
Precedence: bulk

On Mon, May 08, 2023 at 06:05:19PM +0200, Geert Uytterhoeven wrote:
> When just including <asm/arm_pmuv3.h>:
> 
>     arch/arm64/include/asm/arm_pmuv3.h:31:13: error: ‘write_pmevtypern’ defined but not used [-Werror=unused-function]
>        31 | static void write_pmevtypern(int n, unsigned long val)
> 	  |             ^~~~~~~~~~~~~~~~
>     arch/arm64/include/asm/arm_pmuv3.h:24:13: error: ‘write_pmevcntrn’ defined but not used [-Werror=unused-function]
>        24 | static void write_pmevcntrn(int n, unsigned long val)
> 	  |             ^~~~~~~~~~~~~~~
>     arch/arm64/include/asm/arm_pmuv3.h:16:22: error: ‘read_pmevcntrn’ defined but not used [-Werror=unused-function]
>        16 | static unsigned long read_pmevcntrn(int n)
> 	  |                      ^~~~~~~~~~~~~~
> 
> Fix this by adding the missing "inline" keywords to the three accessor
> functions that lack them.
> 
> Fixes: df29ddf4f04b00cf ("arm64: perf: Abstract system register accesses away")
> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

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

Mark.

> ---
>  arch/arm64/include/asm/arm_pmuv3.h | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/arch/arm64/include/asm/arm_pmuv3.h b/arch/arm64/include/asm/arm_pmuv3.h
> index d6b51deb7bf0ff2f..18dc2fb3d7b7b2d0 100644
> --- a/arch/arm64/include/asm/arm_pmuv3.h
> +++ b/arch/arm64/include/asm/arm_pmuv3.h
> @@ -13,7 +13,7 @@
>  
>  #define RETURN_READ_PMEVCNTRN(n) \
>  	return read_sysreg(pmevcntr##n##_el0)
> -static unsigned long read_pmevcntrn(int n)
> +static inline unsigned long read_pmevcntrn(int n)
>  {
>  	PMEVN_SWITCH(n, RETURN_READ_PMEVCNTRN);
>  	return 0;
> @@ -21,14 +21,14 @@ static unsigned long read_pmevcntrn(int n)
>  
>  #define WRITE_PMEVCNTRN(n) \
>  	write_sysreg(val, pmevcntr##n##_el0)
> -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##_el0)
> -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
>