linux-kernel - Re: [PATCH 05/18] perf tools: Add ordered_events

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Date:	Sun, 29 Jun 2014 10:50:24 -0600
From:	David Ahern <dsahern@...il.com>
To:	Jiri Olsa <jolsa@...hat.com>
CC:	Jiri Olsa <jolsa@...nel.org>, linux-kernel@...r.kernel.org,
	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Corey Ashford <cjashfor@...ux.vnet.ibm.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...nel.org>,
	Jean Pihet <jean.pihet@...aro.org>,
	Namhyung Kim <namhyung@...nel.org>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: [PATCH 05/18] perf tools: Add ordered_events_(get|put) interface

On 6/29/14, 10:39 AM, Jiri Olsa wrote:
> On Fri, Jun 27, 2014 at 05:06:36PM -0600, David Ahern wrote:
>> On 6/18/14, 8:58 AM, Jiri Olsa wrote:
>>>
>>> +static struct ordered_event*
>>> +ordered_events_get(struct ordered_events_queue *q, u64 timestamp)
>>> +{
>>> +	struct ordered_event *new;
>>> +
>>> +	new = alloc_event(q);
>>> +	if (new) {
>>> +		new->timestamp = timestamp;
>>> +		queue_event(q, new);
>>> +	}
>>> +
>>> +	return new;
>>> +}
>>
>> The _get name does not really correlate with what is happening -- ie.,
>> allocate a new event and add it to the queue. There is no reference taken
>> either.
>
> ook.. so how about ordered_events_alloc ordered_events_free
>
>>
>>> +
>>> +static void
>>> +ordered_event_put(struct ordered_events_queue *q, struct ordered_event *iter)
>>> +{
>>> +	list_del(&iter->list);
>>> +	list_add(&iter->list, &q->cache);
>>> +	q->nr_events--;
>>> +}
>>
>> Similarly here with the _put. In this case the function is moving the event
>> from one list to another. And how about something else for the name besides
>> iter -- oe, or oevent?
>
> how about 'event' ?

Already a heavily used keyword in perf, that's why I was thinking oe or 
oevent -- besides it is a struct ordered_event not an event.

The bigger thing to me with this patch is the _get/_put names.

David

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