From: David Miller <davem@davemloft.net>
To: linux-kernel@vger.kernel.org
Cc: a.p.zijlstra@chello.nl, mingo@elte.hu, jens.axboe@oracle.com
Subject: [PATCH 0/2]: Get perf counters working on D-cache aliasing cpus.
Date: Tue, 08 Sep 2009 05:10:45 -0700 (PDT) [thread overview]
Message-ID: <20090908.051045.26522683.davem@davemloft.net> (raw)
With Jen's Axboe's basic sparc counter patch in my tree I started
playing with it on sparc64. Turns out it won't work on anything
pre-Niagara.
The issue is D-cache aliasing between the kernel side mapping
and the user side mapping of the perf event ring buffer.
The following two patches attempt to address this issue and
are working properly on my test machine.
next reply other threads:[~2009-09-08 12:10 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-08 12:10 David Miller [this message]
2009-09-08 12:36 ` [PATCH 0/2]: Get perf counters working on D-cache aliasing cpus Ingo Molnar
2009-09-08 12:38 ` David Miller
2009-09-18 12:31 ` Peter Zijlstra
2009-09-18 17:22 ` David Miller
2009-09-18 17:26 ` Peter Zijlstra
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