From: Peter Zijlstra <peterz@infradead.org>
To: Vince Weaver <vincent.weaver@maine.edu>
Cc: "Michael Kerrisk (man-pages)" <mtk.manpages@gmail.com>,
linux-man@vger.kernel.org, linux-kernel@vger.kernel.org,
Paul Mackerras <paulus@samba.org>, Ingo Molnar <mingo@redhat.com>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Stephane Eranian <eranian@google.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Borislav Petkov <bp@alien8.de>,
Frederic Weisbecker <fweisbec@gmail.com>,
"H. Peter Anvin" <hpa@zytor.com>,
Kaixu Xia <kaixu.xia@linaro.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Mike Galbraith <efault@gmx.de>, Robert Richter <rric@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
adrian.hunter@intel.com, kan.liang@intel.com,
markus.t.metzger@intel.com, mathieu.poirier@linaro.org
Subject: Re: [patch 05/10] perf_event_open.2: aux_{head,tail,offset,size} support
Date: Thu, 16 Apr 2015 20:55:59 +0200 [thread overview]
Message-ID: <20150416185559.GC23123@twins.programming.kicks-ass.net> (raw)
In-Reply-To: <alpine.DEB.2.11.1504161414590.15181@vincent-weaver-1.umelst.maine.edu>
On Thu, Apr 16, 2015 at 02:15:52PM -0400, Vince Weaver wrote:
> +.I aux_size
> +needs to be set to the desired buffer size.
> +The desired offset and size must be page aligned.
I think we also require the size to be a power of two.
> +These values are then passed to mmap in order to map the AUX buffer.
> +Pages in the AUX buffer are included as part of the user mlock
> +rlimit as well as the
> +.I perf_event_mlock_kb
> +allowance.
prev parent reply other threads:[~2015-04-16 18:56 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-16 18:15 [patch 05/10] perf_event_open.2: aux_{head,tail,offset,size} support Vince Weaver
2015-04-16 18:55 ` Peter Zijlstra [this message]
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