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Date: Wed, 24 Apr 2024 10:51:41 +0800
From: kernel test robot <yujie.liu@intel.com>
To: Ian Rogers <irogers@google.com>, Kan Liang <kan.liang@linux.intel.com>,
	Ingo Molnar <mingo@redhat.com>, Arnaldo Carvalho de Melo <acme@kernel.org>,
	Namhyung Kim <namhyung@kernel.org>, Mark Rutland <mark.rutland@arm.com>,
	Alexander Shishkin <alexander.shishkin@linux.intel.com>, Jiri Olsa
	<jolsa@kernel.org>, Adrian Hunter <adrian.hunter@intel.com>, Jonathan Corbet
	<corbet@lwn.net>, Bjorn Helgaas <helgaas@kernel.org>, Randy Dunlap
	<rdunlap@infradead.org>, Jing Zhang <renyu.zj@linux.alibaba.com>, James Clark
	<james.clark@arm.com>, Ravi Bangoria <ravi.bangoria@amd.com>,
	<linux-kernel@vger.kernel.org>, <linux-perf-users@vger.kernel.org>
CC: <oe-kbuild-all@lists.linux.dev>
Subject: Re: [PATCH v2 3/6] perf test pmu: Refactor format test and exposed
 test APIs
Message-ID: <202404240706.4zQmkds8-lkp@intel.com>
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Hi Ian,

kernel test robot noticed the following build errors:

[auto build test ERROR on perf-tools-next/perf-tools-next]
[also build test ERROR on tip/perf/core perf-tools/perf-tools linus/master v6.9-rc5 next-20240423]
[cannot apply to acme/perf/core]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Ian-Rogers/perf-test-pmu-events-Make-it-clearer-that-pmu-events-tests-json-events/20240423-112057
base:   https://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools-next.git perf-tools-next
patch link:    https://lore.kernel.org/r/20240423031719.1941141-4-irogers%40google.com
patch subject: [PATCH v2 3/6] perf test pmu: Refactor format test and exposed test APIs
compiler: gcc-13 (Ubuntu 13.2.0-4ubuntu3) 13.2.0

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <yujie.liu@intel.com>
| Closes: https://lore.kernel.org/r/202404240706.4zQmkds8-lkp@intel.com/

All errors (new ones prefixed by >>):

   tests/pmu.c: In function 'test_pmu_get':
>> tests/pmu.c:84:9: error: ignoring return value of 'write' declared with attribute 'warn_unused_result' [-Werror=unused-result]
      84 |         write(file, "9999\n", 5);
         |         ^~~~~~~~~~~~~~~~~~~~~~~~
   cc1: all warnings being treated as errors
   make[7]: *** [tools/build/Makefile.build:106: tools/perf/tests/pmu.o] Error 1
   make[7]: *** Waiting for unfinished jobs....
   make[6]: *** [tools/build/Makefile.build:158: tests] Error 2
   make[6]: *** Waiting for unfinished jobs....
   make[5]: *** [Makefile.perf:727: tools/perf/perf-in.o] Error 2
   make[5]: *** Waiting for unfinished jobs....
   make[4]: *** [Makefile.perf:264: sub-make] Error 2
   make[3]: *** [Makefile:70: all] Error 2

-- 
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https://github.com/intel/lkp-tests/wiki