[PATCH 5.4 88/90] perf tests bp_account: Make global variable static

From: Greg Kroah-Hartman
Date: Mon Aug 03 2020 - 08:30:37 EST

From: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>

commit cff20b3151ccab690715cb6cf0f5da5cccb32adf upstream.

To fix the build with newer gccs, that without this patch exit with:

LD /tmp/build/perf/tests/perf-in.o
ld: /tmp/build/perf/tests/bp_account.o:/git/perf/tools/perf/tests/bp_account.c:22: multiple definition of `the_var'; /tmp/build/perf/tests/bp_signal.o:/git/perf/tools/perf/tests/bp_signal.c:38: first defined here
make[4]: *** [/git/perf/tools/build/Makefile.build:145: /tmp/build/perf/tests/perf-in.o] Error 1

First noticed in fedora:rawhide/32 with:

[perfbuilder@a5ff49d6e6e4 ~]$ gcc --version
gcc (GCC) 10.0.1 20200216 (Red Hat 10.0.1-0.8)

Reported-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Cc: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

tools/perf/tests/bp_account.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/tools/perf/tests/bp_account.c
+++ b/tools/perf/tests/bp_account.c
@@ -23,7 +23,7 @@
#include "../perf-sys.h"
#include "cloexec.h"

-volatile long the_var;
+static volatile long the_var;

static noinline int test_function(void)