linux-kernel - Re: [PATCH 2/6] Revert "perf: Disable PERF_RECORD

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Date:	Fri, 16 May 2014 13:25:14 +0200
From:	Jiri Olsa <jolsa@...hat.com>
To:	Don Zickus <dzickus@...hat.com>
Cc:	acme@...stprotocols.net, peterz@...radead.org,
	LKML <linux-kernel@...r.kernel.org>, namhyung@...il.com,
	eranian@...gle.com, Andi Kleen <andi@...stfloor.org>
Subject: Re: [PATCH 2/6] Revert "perf: Disable PERF_RECORD_MMAP2 support"

On Tue, May 13, 2014 at 12:48:13PM -0400, Don Zickus wrote:

SNIP

> -		/*
> - 		 * Anon maps don't have the execname.
> - 		 */
> -		if (n < 4)
> +		n = sscanf(bf, "%"PRIx64"-%"PRIx64" %s %"PRIx64" %x:%x %u %s\n",
> +		       &event->mmap2.start, &event->mmap2.len, prot,
> +		       &event->mmap2.pgoff, &event->mmap2.maj,
> +		       &event->mmap2.min,
> +		       &ino, execname);
> +
> +		event->mmap2.ino = (u64)ino;
> +
> +		if (n < 7)
>  			continue;

any reason for changing this from 'if (n != 8)' ?

jirka
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