linux-kernel - Re: [PATCH] perf machine: Search for modules in %s/lib/modules/%s

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Message-ID: <53482425.3090608@gmail.com>
Date:	Fri, 11 Apr 2014 10:19:33 -0700
From:	David Ahern <dsahern@...il.com>
To:	Richard Yao <ryao@...too.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
CC:	Paul Mackerras <paulus@...ba.org>, Ingo Molnar <mingo@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Jiri Olsa <jolsa@...hat.com>,
	Stephane Eranian <eranian@...gle.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] perf machine: Search for modules in %s/lib/modules/%s

On 4/10/14, 9:52 AM, Richard Yao wrote:
> Modules installed outside of the kernel's build system should go into
> "%s/lib/modules/%s/extra", but at present, perf will only look at them
> when they are in "%s/lib/modules/%s/kernel". Lets encourage good
> citizenship by relaxing this requirement to "%s/lib/modules/%s". This
> way open source modules that are out-of-tree have no incentive to start
> populating a directory reserved for in-kernle modules and I can stop hex
> editing my system's perf binary when profiling OSS out-of-tree modules.
>
> Signed-off-by: Richard Yao <ryao@...too.org>
> ---
>   tools/perf/util/machine.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
> index a53cd0b..116842e 100644
> --- a/tools/perf/util/machine.c
> +++ b/tools/perf/util/machine.c
> @@ -786,7 +786,7 @@ static int machine__set_modules_path(struct machine *machine)
>   	if (!version)
>   		return -1;
>
> -	snprintf(modules_path, sizeof(modules_path), "%s/lib/modules/%s/kernel",
> +	snprintf(modules_path, sizeof(modules_path), "%s/lib/modules/%s",
>   		 machine->root_dir, version);
>   	free(version);
>
>

Acked-by: David Ahern <dsahern@...il.com>
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