From: Paul Mackerras <paulus@samba.org>
To: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: LKML <linux-kernel@vger.kernel.org>, Ingo Molnar <mingo@elte.hu>,
Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: Re: perf_counters: page fault trace record
Date: Sat, 13 Jun 2009 13:43:59 +1000 [thread overview]
Message-ID: <18995.8319.322002.917595@cargo.ozlabs.ibm.com> (raw)
In-Reply-To: <4A330022.3070105@linux.vnet.ibm.com>
Corey Ashford writes:
> One of the tools we are working on needs to be able to look not only at counts
> of page faults, but where they are occurring (ip and faulting page address).
>
> What would you think about adding a new bit to the config record, something like:
Can't you do what you need just using a page fault software counter
with sample_type = PERF_SAMPLE_IP | PERF_SAMPLE_ADDR and
sample_period = 1?
Paul.
next prev parent reply other threads:[~2009-06-13 3:44 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-13 1:25 Corey Ashford
2009-06-13 3:43 ` Paul Mackerras [this message]
2009-06-13 7:04 ` Ingo Molnar
2009-06-13 8:44 ` Corey Ashford
2009-06-13 9:17 ` Paul Mackerras
2009-06-13 10:09 ` Ingo Molnar
2009-06-15 20:38 ` Corey Ashford
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