From: Pavel Machek <pavel@suse.cz>
To: eranian@googlemail.com
Cc: linux-kernel@vger.kernel.org
Subject: Re: [patch 23/24] perfmon3: kernel documentation
Date: Sun, 19 Oct 2008 15:37:49 +0200 [thread overview]
Message-ID: <20081019133749.GA1546@ucw.cz> (raw)
In-Reply-To: <48f8a9de.1d255e0a.4027.1741@mx.google.com>
Hi!
> + * int pfm_create(int flags, pfarg_sinfo_t *s);
> +
> + This function creates a perfmon per-thread session.
> + The flags parameter is currently unused and must be set to 0.
> +
> + Upon return and if s is not NULL, the kernel return the list
> of available
returns?
> + PMC and PMD registers. Tools should not assume, they have access to the
> + entire PMU, it may be shared with other kernel subsystems, e.g., on X86
> + the NMI watchdog timer.
How can kernel return anything?
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
next prev parent reply other threads:[~2008-10-19 13:38 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-17 15:06 eranian
2008-10-19 13:37 ` Pavel Machek [this message]
2008-10-20 7:55 ` stephane eranian
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