linux-kernel - Re: [PATCH v2 11/22] perf test: Convert watch point tests to test cases.

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Date:   Sat, 13 Nov 2021 18:11:02 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Ian Rogers <irogers@...gle.com>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Jin Yao <yao.jin@...ux.intel.com>,
        John Garry <john.garry@...wei.com>,
        "Paul A . Clarke" <pc@...ibm.com>,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org,
        Brendan Higgins <brendanhiggins@...gle.com>,
        Daniel Latypov <dlatypov@...gle.com>,
        David Gow <davidgow@...gle.com>, eranian@...gle.com
Subject: Re: [PATCH v2 11/22] perf test: Convert watch point tests to test
 cases.

Em Wed, Oct 13, 2021 at 10:45:53AM -0700, Ian Rogers escreveu:
> Use null terminated array of test cases rather than the previous sub
> test functions.
> 
> Signed-off-by: Ian Rogers <irogers@...gle.com>
> ---
>  tools/perf/tests/wp.c | 128 ++++++++++--------------------------------
>  1 file changed, 30 insertions(+), 98 deletions(-)
> 
> diff --git a/tools/perf/tests/wp.c b/tools/perf/tests/wp.c
> index 904bdf2dcf81..2c0513257b15 100644
> --- a/tools/perf/tests/wp.c
> +++ b/tools/perf/tests/wp.c
> @@ -62,8 +62,12 @@ static int __event(int wp_type, void *wp_addr, unsigned long wp_len)
>  	return fd;
>  }
>  

  65     6.29 ubuntu:16.04-x-s390           : FAIL gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.9)
    tests/wp.c:24:12: error: 'wp_read' defined but not used [-Werror=unused-function]
     static int wp_read(int fd, long long *count, int size)
                ^
    tests/wp.c:51:12: error: '__event' defined but not used [-Werror=unused-function]
     static int __event(int wp_type, void *wp_addr, unsigned long wp_len)
                ^
    cc1: all warnings being treated as errors
    /git/perf-5.15.0/tools/build/Makefile.build:139: recipe for target 'tests' failed
    make[3]: *** [tests] Error 2


Trying with:


diff --git a/tools/perf/tests/wp.c b/tools/perf/tests/wp.c
index 2c0513257b15c041..820d942b30c390e9 100644
--- a/tools/perf/tests/wp.c
+++ b/tools/perf/tests/wp.c
@@ -48,6 +48,7 @@ static void get__perf_event_attr(struct perf_event_attr *attr, int wp_type,
 	attr->exclude_hv     = 1;
 }
 
+#ifndef __s390x__
 static int __event(int wp_type, void *wp_addr, unsigned long wp_len)
 {
 	int fd;
@@ -61,6 +62,7 @@ static int __event(int wp_type, void *wp_addr, unsigned long wp_len)
 
 	return fd;
 }
+#endif
 
 static int test__wp_ro(struct test_suite *test __maybe_unused,
 		       int subtest __maybe_unused)