linux-kernel - Re: [PATCH] recordmcount: Fix build failure on non arm64

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Message-ID: <20200810091730.GA3099@ltoracle>
Date:   Mon, 10 Aug 2020 11:17:30 +0200
From:   Gregory Herrero <gregory.herrero@...cle.com>
To:     Christophe Leroy <christophe.leroy@...roup.eu>
Cc:     Steven Rostedt <rostedt@...dmis.org>,
        Catalin Marinas <catalin.marinas@....com>,
        linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] recordmcount: Fix build failure on non arm64

Hi Christophe,

On Mon, Aug 10, 2020 at 08:48:22AM +0000, Christophe Leroy wrote:
> Commit ea0eada45632 leads to the following build failure on powerpc:
> 
>   HOSTCC  scripts/recordmcount
> scripts/recordmcount.c: In function 'arm64_is_fake_mcount':
> scripts/recordmcount.c:440: error: 'R_AARCH64_CALL26' undeclared (first use in this function)
> scripts/recordmcount.c:440: error: (Each undeclared identifier is reported only once
> scripts/recordmcount.c:440: error: for each function it appears in.)
> make[2]: *** [scripts/recordmcount] Error 1
> 
> Make sure R_AARCH64_CALL26 is always defined.
> 
Oops, thanks for fixing this.

Acked-by: Gregory Herrero <gregory.herrero@...cle.com>

Greg

> Fixes: ea0eada45632 ("recordmcount: only record relocation of type R_AARCH64_CALL26 on arm64.")
> Cc: Gregory Herrero <gregory.herrero@...cle.com>
> Signed-off-by: Christophe Leroy <christophe.leroy@...roup.eu>
> ---
>  scripts/recordmcount.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/scripts/recordmcount.c b/scripts/recordmcount.c
> index e59022b3f125..b9c2ee7ab43f 100644
> --- a/scripts/recordmcount.c
> +++ b/scripts/recordmcount.c
> @@ -42,6 +42,8 @@
>  #define R_ARM_THM_CALL		10
>  #define R_ARM_CALL		28
>  
> +#define R_AARCH64_CALL26	283
> +
>  static int fd_map;	/* File descriptor for file being modified. */
>  static int mmap_failed; /* Boolean flag. */
>  static char gpfx;	/* prefix for global symbol name (sometimes '_') */
> -- 
> 2.25.0
>