linux-kernel - Re: [RFC PATCH 2/5] perf jevents: add support for arch recommended events

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Message-ID: <f58001e9-86fa-c6e6-b9c7-fb748d340da1@huawei.com>
Date:   Wed, 6 Dec 2017 14:40:10 +0000
From:   John Garry <john.garry@...wei.com>
To:     Jiri Olsa <jolsa@...hat.com>
CC:     <peterz@...radead.org>, <mingo@...hat.com>, <acme@...nel.org>,
        <alexander.shishkin@...ux.intel.com>, <namhyung@...nel.org>,
        <ak@...ux.intel.com>, <wcohen@...hat.com>, <will.deacon@....com>,
        <ganapatrao.kulkarni@...ium.com>, <catalin.marinas@....com>,
        <mark.rutland@....com>, <xuwei5@...ilicon.com>,
        <linuxarm@...wei.com>, <zhangshaokun@...ilicon.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [RFC PATCH 2/5] perf jevents: add support for arch recommended
 events

On 06/12/2017 13:37, Jiri Olsa wrote:
> On Wed, Dec 06, 2017 at 12:13:16AM +0800, John Garry wrote:
>
> SNIP
>
>> ---
>>  tools/perf/pmu-events/jevents.c | 215 ++++++++++++++++++++++++++++++++++++----
>>  1 file changed, 198 insertions(+), 17 deletions(-)
>>
>> diff --git a/tools/perf/pmu-events/jevents.c b/tools/perf/pmu-events/jevents.c
>> index a0d489e..a820ed4 100644
>> --- a/tools/perf/pmu-events/jevents.c
>> +++ b/tools/perf/pmu-events/jevents.c
>> @@ -42,6 +42,7 @@
>>  #include <dirent.h>
>>  #include <sys/time.h>			/* getrlimit */
>>  #include <sys/resource.h>		/* getrlimit */
>> +#include <sys/queue.h>
>>  #include <ftw.h>
>>  #include <sys/stat.h>
>>  #include "jsmn.h"
>> @@ -366,6 +367,94 @@ static int print_events_table_entry(void *data, char *name, char *event,
>>  	return 0;
>>  }
>>
>> +struct event_struct {
>> +	char *name;
>> +	char *event;
>> +	char *desc;
>> +	char *long_desc;
>> +	char *pmu;
>> +	char *unit;
>> +	char *perpkg;
>> +	char *metric_expr;
>> +	char *metric_name;
>> +	char *metric_group;
>> +	LIST_ENTRY(event_struct) list;
>
> is there any reason you don't use the 'struct list_head' ?
> I dont think we want another thingie involved for lists

Hi jirka,

The linux kernel headers are not used for jevents tool. I would rather 
use them if possible...

Thanks,
John

>
> jirka
>
> .
>