linux-kernel - Re: [PATCH v1 4/5] perf: Introduce address range filtering

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Date:	Mon, 25 Apr 2016 19:07:12 +0300
From:	Alexander Shishkin <alexander.shishkin@...ux.intel.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org,
	vince@...ter.net, eranian@...gle.com,
	Arnaldo Carvalho de Melo <acme@...radead.org>,
	Mathieu Poirier <mathieu.poirier@...aro.org>
Subject: Re: [PATCH v1 4/5] perf: Introduce address range filtering

Peter Zijlstra <peterz@...radead.org> writes:

> On Fri, Apr 22, 2016 at 07:19:11PM +0300, Alexander Shishkin wrote:
>>  /**
>> + * struct perf_addr_filter - address range filter definition
>> + * @entry:	event's filter list linkage
>> + * @inode:	object file's inode for file-based filters
>> + * @offset:	filter range offset
>> + * @size:	filter range size
>> + * @range:	1: range, 0: address
>> + * @filter:	1: filter/start, 0: stop
>> + * @kernel:	1: kernel, 0: file-based
>> + *
>> + * This is a hardware-agnostic filter configuration as specified by the user.
>> + */
>> +struct perf_addr_filter {
>> +	struct list_head	entry;
>> +	struct inode		*inode;
>> +	unsigned long		offset;
>> +	unsigned long		size;
>> +	unsigned int		range	: 1,
>> +				filter	: 1,
>> +				kernel	: 1;
>> +};
>
> FWIW, why not have !inode be kernel?

It actually can, you're right.

Regards,
--
Alex