linux-kernel - Re: [PATCH v4 23/25] perf tests: Support 'Session topology' test for hybrid

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Date:   Thu, 22 Apr 2021 11:15:50 +0800
From:   "Jin, Yao" <yao.jin@...ux.intel.com>
To:     Jiri Olsa <jolsa@...hat.com>
Cc:     acme@...nel.org, jolsa@...nel.org, peterz@...radead.org,
        mingo@...hat.com, alexander.shishkin@...ux.intel.com,
        Linux-kernel@...r.kernel.org, ak@...ux.intel.com,
        kan.liang@...el.com, yao.jin@...el.com
Subject: Re: [PATCH v4 23/25] perf tests: Support 'Session topology' test for
 hybrid

Hi Jiri,

On 4/22/2021 2:29 AM, Jiri Olsa wrote:
> On Fri, Apr 16, 2021 at 10:05:15PM +0800, Jin Yao wrote:
>> Force to create one event "cpu_core/cycles/" by default,
>> otherwise in evlist__valid_sample_type, the checking of
>> 'if (evlist->core.nr_entries == 1)' would be failed.
>>
>>    # ./perf test 41
>>    41: Session topology                                                : Ok
>>
>> Signed-off-by: Jin Yao <yao.jin@...ux.intel.com>
>> ---
>>   tools/perf/tests/topology.c | 10 +++++++++-
>>   1 file changed, 9 insertions(+), 1 deletion(-)
>>
>> diff --git a/tools/perf/tests/topology.c b/tools/perf/tests/topology.c
>> index 050489807a47..30b4acb08d35 100644
>> --- a/tools/perf/tests/topology.c
>> +++ b/tools/perf/tests/topology.c
>> @@ -8,6 +8,7 @@
>>   #include "session.h"
>>   #include "evlist.h"
>>   #include "debug.h"
>> +#include "pmu.h"
>>   #include <linux/err.h>
>>   
>>   #define TEMPL "/tmp/perf-test-XXXXXX"
>> @@ -40,7 +41,14 @@ static int session_write_header(char *path)
>>   	session = perf_session__new(&data, false, NULL);
>>   	TEST_ASSERT_VAL("can't get session", !IS_ERR(session));
>>   
>> -	session->evlist = evlist__new_default();
>> +	if (!perf_pmu__has_hybrid()) {
>> +		session->evlist = evlist__new_default();
>> +	} else {
>> +		struct parse_events_error err;
>> +
>> +		session->evlist = evlist__new();
> 
> you should ASSERT session->evlist in here
> 
> jirka
> 

OK, will add "ASSERT session->evlist" in next version.

Thanks
Jin Yao

>> +		parse_events(session->evlist, "cpu_core/cycles/", &err);
>> +	}
>>   	TEST_ASSERT_VAL("can't get evlist", session->evlist);
>>   
>>   	perf_header__set_feat(&session->header, HEADER_CPU_TOPOLOGY);
>> -- 
>> 2.17.1
>>
>