Patch "perf test: Fix build of BPF and LLVM on older glibc libraries" has been added to the 4.4-stable tree

Patch "perf test: Fix build of BPF and LLVM on older glibc libraries" has been added to the 4.4-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    perf test: Fix build of BPF and LLVM on older glibc libraries

to the 4.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     perf-test-fix-build-of-bpf-and-llvm-on-older-glibc-libraries.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 916d4092a1d2d7bb50630497be71ee4c4c2807fa Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Wed, 18 Nov 2015 17:38:49 -0300
Subject: perf test: Fix build of BPF and LLVM on older glibc libraries
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

From: Arnaldo Carvalho de Melo <acme@redhat.com>

commit 916d4092a1d2d7bb50630497be71ee4c4c2807fa upstream.

  $ rpm -q glibc
  glibc-2.12-1.166.el6_7.1.x86_64

<SNIP>
    CC       /tmp/build/perf/tests/llvm.o
  cc1: warnings being treated as errors
  tests/llvm.c: In function ‘test_llvm__fetch_bpf_obj’:
  tests/llvm.c:53: error: declaration of ‘index’ shadows a global declaration
  /usr/include/string.h:489: error: shadowed declaration is here
<SNIP>
    CC       /tmp/build/perf/tests/bpf.o
  cc1: warnings being treated as errors
  tests/bpf.c: In function ‘__test__bpf’:
  tests/bpf.c:149: error: declaration of ‘index’ shadows a global declaration
  /usr/include/string.h:489: error: shadowed declaration is here
<SNIP>

Cc: He Kuang <hekuang@huawei.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: pi3orama@163.com
Cc: Wang Nan <wangnan0@huawei.com>
Cc: Zefan Li <lizefan@huawei.com>
Fixes: b31de018a628 ("perf test: Enhance the LLVM test: update basic BPF test program")
Fixes: ba1fae431e74 ("perf test: Add 'perf test BPF'")
Link: http://lkml.kernel.org/n/tip-akpo4r750oya2phxoh9e3447@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Nikolay Borisov <kernel@kyup.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 tools/perf/tests/bpf.c  |   14 +++++++-------
 tools/perf/tests/llvm.c |    8 ++++----
 2 files changed, 11 insertions(+), 11 deletions(-)

--- a/tools/perf/tests/bpf.c
+++ b/tools/perf/tests/bpf.c
@@ -146,7 +146,7 @@ prepare_bpf(void *obj_buf, size_t obj_bu
 	return obj;
 }
 
-static int __test__bpf(int index)
+static int __test__bpf(int idx)
 {
 	int ret;
 	void *obj_buf;
@@ -154,27 +154,27 @@ static int __test__bpf(int index)
 	struct bpf_object *obj;
 
 	ret = test_llvm__fetch_bpf_obj(&obj_buf, &obj_buf_sz,
-				       bpf_testcase_table[index].prog_id,
+				       bpf_testcase_table[idx].prog_id,
 				       true);
 	if (ret != TEST_OK || !obj_buf || !obj_buf_sz) {
 		pr_debug("Unable to get BPF object, %s\n",
-			 bpf_testcase_table[index].msg_compile_fail);
-		if (index == 0)
+			 bpf_testcase_table[idx].msg_compile_fail);
+		if (idx == 0)
 			return TEST_SKIP;
 		else
 			return TEST_FAIL;
 	}
 
 	obj = prepare_bpf(obj_buf, obj_buf_sz,
-			  bpf_testcase_table[index].name);
+			  bpf_testcase_table[idx].name);
 	if (!obj) {
 		ret = TEST_FAIL;
 		goto out;
 	}
 
 	ret = do_test(obj,
-		      bpf_testcase_table[index].target_func,
-		      bpf_testcase_table[index].expect_result);
+		      bpf_testcase_table[idx].target_func,
+		      bpf_testcase_table[idx].expect_result);
 out:
 	bpf__clear();
 	return ret;
--- a/tools/perf/tests/llvm.c
+++ b/tools/perf/tests/llvm.c
@@ -50,7 +50,7 @@ static struct {
 int
 test_llvm__fetch_bpf_obj(void **p_obj_buf,
 			 size_t *p_obj_buf_sz,
-			 enum test_llvm__testcase index,
+			 enum test_llvm__testcase idx,
 			 bool force)
 {
 	const char *source;
@@ -59,11 +59,11 @@ test_llvm__fetch_bpf_obj(void **p_obj_bu
 	char *tmpl_new = NULL, *clang_opt_new = NULL;
 	int err, old_verbose, ret = TEST_FAIL;
 
-	if (index >= __LLVM_TESTCASE_MAX)
+	if (idx >= __LLVM_TESTCASE_MAX)
 		return TEST_FAIL;
 
-	source = bpf_source_table[index].source;
-	desc = bpf_source_table[index].desc;
+	source = bpf_source_table[idx].source;
+	desc = bpf_source_table[idx].desc;
 
 	perf_config(perf_config_cb, NULL);
 


Patches currently in stable-queue which might be from acme@redhat.com are

queue-4.4/perf-x86-intel-pt-generate-pmi-in-the-stop-region-as-well.patch
queue-4.4/perf-test-fix-build-of-bpf-and-llvm-on-older-glibc-libraries.patch
queue-4.4/perf-core-fix-perf_event_open-vs.-execve-race.patch