linux-kernel - Re: [RFC PATCH v3 19/37] bpf tools: Clear libelf and ELF parsing resrouce to finish opening

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Date:	Mon, 18 May 2015 17:35:24 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Alexei Starovoitov <ast@...mgrid.com>
Cc:	Wang Nan <wangnan0@...wei.com>, paulus@...ba.org,
	a.p.zijlstra@...llo.nl, mingo@...hat.com, namhyung@...nel.org,
	jolsa@...nel.org, dsahern@...il.com, daniel@...earbox.net,
	brendan.d.gregg@...il.com, masami.hiramatsu.pt@...achi.com,
	lizefan@...wei.com, linux-kernel@...r.kernel.org, pi3orama@....com
Subject: Re: [RFC PATCH v3 19/37] bpf tools: Clear libelf and ELF parsing
 resrouce to finish opening

Em Mon, May 18, 2015 at 11:36:07AM -0700, Alexei Starovoitov escreveu:
> On 5/17/15 3:56 AM, Wang Nan wrote:
> >After all eBPF programs in an object file are loaded, related ELF
> >information is useless. Close the object file and free those memory.
> >
> >Signed-off-by: Wang Nan <wangnan0@...wei.com>
> >---
> >  tools/lib/bpf/libbpf.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> >diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
> >index ded96cb..9ed8cca 100644
> >--- a/tools/lib/bpf/libbpf.c
> >+++ b/tools/lib/bpf/libbpf.c
> >@@ -687,8 +687,8 @@ struct bpf_object *bpf_open_object(const char *path)
> >  	if (bpf_obj_validate(obj))
> >  		goto out;
> >
> >+	bpf_obj_clear_elf(obj);
> >  	return obj;
> >-
> >  out:
> >  	bpf_close_object(obj);
> >  	return NULL;
> >
> 
> looks like a bug in some previous patch in the same set.
> Should be squashed with that patch?

Right, please don't introduce bugs + fixes, we love bisecting :-)

- Arnaldo
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