linux-kernel - Re: [RESEND PATCH] perf tools riscv: Add support for riscv lookup_binutils

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Date:   Sun, 12 Mar 2023 13:40:18 +0000
From:   Conor Dooley <conor@...nel.org>
To:     Paran Lee <p4ranlee@...il.com>
Cc:     Jiri Olsa <jolsa@...nel.org>, Namhyung Kim <namhyung@...nel.org>,
        Ian Rogers <irogers@...gle.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Arnaldo Carvalho de Melo <acme@...hat.com>,
        Anton Blanchard <anton@...abs.org>,
        Daniel Axtens <dja@...ens.net>,
        Michael Ellerman <mpe@...erman.id.au>,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-riscv@...ts.infradead.org
Subject: Re: [RESEND PATCH] perf tools riscv: Add support for riscv
 lookup_binutils_path

On Sun, Mar 12, 2023 at 10:03:05PM +0900, Paran Lee wrote:
> Add to know RISC-V binutils path.
> 
> Signed-off-by: Paran Lee <p4ranlee@...il.com>
> ---
>  tools/perf/arch/common.c | 18 ++++++++++++++++++
>  1 file changed, 18 insertions(+)
> 
> diff --git a/tools/perf/arch/common.c b/tools/perf/arch/common.c
> index 59dd875fd5e4..6ac7a22244c0 100644
> --- a/tools/perf/arch/common.c
> +++ b/tools/perf/arch/common.c
> @@ -43,6 +43,20 @@ const char *const powerpc_triplets[] = {
>  	NULL
>  };
>  
> +const char *const riscv32_triplets[] = {
> +	"riscv32-unknown-linux-gnu-",
> +	"riscv32-linux-android-",
> +	"riscv32-linux-gnu-",
> +	NULL
> +};
> +
> +const char *const riscv64_triplets[] = {
> +	"riscv64-unknown-linux-gnu-",
> +	"riscv64-linux-android-",
> +	"riscv64-linux-gnu-",

I don't know anything about perf, so I could be asking a really silly
question here, but how come riscvN-linux- has been omitted here?
The kernel.org toolchains [1] are prefixed that way, although I noticed
in your v1 that you'd seemingly duplicated the arm64 patterns, so I am
curious as to whether the omission is intentional.

Cheers,
Conor.

[1] https://mirrors.edge.kernel.org/pub/tools/crosstool/

> +	NULL
> +};
> +
>  const char *const s390_triplets[] = {
>  	"s390-ibm-linux-",
>  	"s390x-linux-gnu-",
> @@ -168,6 +182,10 @@ static int perf_env__lookup_binutils_path(struct perf_env *env,
>  		path_list = powerpc_triplets;
>  	else if (!strcmp(arch, "sh"))
>  		path_list = sh_triplets;
> +	else if (!strcmp(arch, "riscv32"))
> +		path_list = riscv32_triplets;
> +	else if (!strcmp(arch, "riscv64"))
> +		path_list = riscv64_triplets;
>  	else if (!strcmp(arch, "s390"))
>  		path_list = s390_triplets;
>  	else if (!strcmp(arch, "sparc"))
> -- 
> 2.34.1
> 

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