linux-kernel - Re: 4.0-rc1 perf build error "builtin-kmem.c:322: error: declaration of ‘stat’ shadows a global declaration"

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Date:	Fri, 24 Apr 2015 07:54:50 -0600
From:	David Ahern <dsahern@...il.com>
To:	Vinson Lee <vlee@...pensource.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	Ingo Molnar <mingo@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...nel.org>
CC:	linux-perf-users@...r.kernel.org,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: 4.0-rc1 perf build error "builtin-kmem.c:322: error: declaration of ‘stat’ shadows a global declaration"

On 4/23/15 6:38 PM, Vinson Lee wrote:
> Hi.
>
> 4.0-rc1 commit 0d68bc92c48167130b61b449f08be27dc862dba2 "perf kmem:
> Analyze page allocator events also" introduced a build error with
> older toolchains.
>
> For example, this build errors occurs on CentOS 6.
>
>    CC       builtin-kmem.o
> cc1: warnings being treated as errors
> builtin-kmem.c: In function ‘search_page_alloc_stat’:
> builtin-kmem.c:322: error: declaration of ‘stat’ shadows a global declaration
> /usr/include/sys/stat.h:455: error: shadowed declaration is here
> builtin-kmem.c: In function ‘perf_evsel__process_page_alloc_event’:
> builtin-kmem.c:378: error: declaration of ‘stat’ shadows a global declaration
> /usr/include/sys/stat.h:455: error: shadowed declaration is here
> builtin-kmem.c: In function ‘perf_evsel__process_page_free_event’:
> builtin-kmem.c:431: error: declaration of ‘stat’ shadows a global declaration
> /usr/include/sys/stat.h:455: error: shadowed declaration is here

Fixed in Arnaldo's core branch; he will push to urgent and Ingo soon.

David

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