linux-kernel - Re: [PATCH v6 1/5] perf/jevents: Remove jevents.h file

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Message-ID: <ca73d0ff-0dfa-8d9e-1cb8-5791a78eb4e2@huawei.com>
Date:   Mon, 31 Aug 2020 10:01:03 +0100
From:   John Garry <john.garry@...wei.com>
To:     Jiri Olsa <jolsa@...hat.com>, Kajol Jain <kjain@...ux.ibm.com>
CC:     <acme@...nel.org>, <peterz@...radead.org>, <mingo@...hat.com>,
        <mark.rutland@....com>, <alexander.shishkin@...ux.intel.com>,
        <pc@...ibm.com>, <namhyung@...nel.org>, <ak@...ux.intel.com>,
        <yao.jin@...ux.intel.com>, <linux-kernel@...r.kernel.org>,
        <linux-perf-users@...r.kernel.org>, <irogers@...gle.com>,
        <maddy@...ux.ibm.com>, <ravi.bangoria@...ux.ibm.com>
Subject: Re: [PATCH v6 1/5] perf/jevents: Remove jevents.h file

On 31/08/2020 09:43, Jiri Olsa wrote:
> On Thu, Aug 27, 2020 at 06:39:54PM +0530, Kajol Jain wrote:
>> This patch removes jevents.h file and add its data inside
>> jevents.c as this file is only included there.
>>
>> Signed-off-by: Kajol Jain <kjain@...ux.ibm.com>
>> ---
>>   tools/perf/pmu-events/jevents.c |  9 ++++++++-
>>   tools/perf/pmu-events/jevents.h | 23 -----------------------
>>   2 files changed, 8 insertions(+), 24 deletions(-)
>>   delete mode 100644 tools/perf/pmu-events/jevents.h
>>
>> diff --git a/tools/perf/pmu-events/jevents.c b/tools/perf/pmu-events/jevents.c
>> index fa86c5f997cc..1c55cc754b5a 100644
>> --- a/tools/perf/pmu-events/jevents.c
>> +++ b/tools/perf/pmu-events/jevents.c
>> @@ -48,11 +48,18 @@
>>   #include <linux/list.h>
>>   #include "jsmn.h"
>>   #include "json.h"
>> -#include "jevents.h"
>>   
>>   int verbose;
>>   char *prog;
>>   
>> +#ifndef min
>> +#define min(x, y) ({				\
>> +	typeof(x) _min1 = (x);			\
>> +	typeof(y) _min2 = (y);			\
>> +	(void)(&_min1 == &_min2);		\
>> +	_min1 < _min2 ? _min1 : _min2; })
>> +#endif

Wondering what is special about this definition of min that it's 
required? Compiled ok for me without it.

>> +
>>   int eprintf(int level, int var, const char *fmt, ...)
>>   {
>>   
>> diff --git a/tools/perf/pmu-events/jevents.h b/tools/perf/pmu-events/jevents.h
>> deleted file mode 100644
>> index 2afc8304529e..000000000000
>> --- a/tools/perf/pmu-events/jevents.h
>> +++ /dev/null
>> @@ -1,23 +0,0 @@
>> -/* SPDX-License-Identifier: GPL-2.0 */
>> -#ifndef JEVENTS_H
>> -#define JEVENTS_H 1
>> -
>> -int json_events(const char *fn,
>> -		int (*func)(void *data, char *name, char *event, char *desc,
>> -				char *long_desc,
>> -				char *pmu,
>> -				char *unit, char *perpkg, char *metric_expr,
>> -				char *metric_name, char *metric_group,
>> -				char *deprecated, char *metric_constraint),
>> -		void *data);
>> -char *get_cpu_str(void);
> 
> I think you can also remove get_cpu_str from jevents.c
> 
> thanks,
> jirka
> 
> .
>