4.0-rc1 perf build error "builtin-kmem.c:322: error: declaration of âstatâ shadows a global declaration"

[Vinson Lee]

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 âsearch_page_alloc_statâ:
builtin-kmem.c:322: error: declaration of âstatâ shadows a global declaration
/usr/include/sys/stat.h:455: error: shadowed declaration is here
builtin-kmem.c: In function âperf_evsel__process_page_alloc_eventâ:
builtin-kmem.c:378: error: declaration of âstatâ shadows a global declaration
/usr/include/sys/stat.h:455: error: shadowed declaration is here
builtin-kmem.c: In function âperf_evsel__process_page_free_eventâ:
builtin-kmem.c:431: error: declaration of âstatâ shadows a global declaration
/usr/include/sys/stat.h:455: error: shadowed declaration is here

Cheers,
Vinson
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