linux-kernel - [patch 08/11] perf_event_open.2: 4.1 add aux

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Message-ID: <alpine.DEB.2.20.1507231313580.3742@vincent-weaver-1.umelst.maine.edu>
Date:	Thu, 23 Jul 2015 13:14:35 -0400 (EDT)
From:	Vince Weaver <vincent.weaver@...ne.edu>
To:	"Michael Kerrisk (man-pages)" <mtk.manpages@...il.com>
cc:	linux-man@...r.kernel.org, linux-kernel@...r.kernel.org,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Ingo Molnar <mingo@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Stephane Eranian <eranian@...gle.com>,
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
	Borislav Petkov <bp@...en8.de>,
	Frederic Weisbecker <fweisbec@...il.com>,
	"H. Peter Anvin" <hpa@...or.com>, Kaixu Xia <kaixu.xia@...aro.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Mike Galbraith <efault@....de>,
	Robert Richter <rric@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>, adrian.hunter@...el.com,
	kan.liang@...el.com, markus.t.metzger@...el.com,
	mathieu.poirier@...aro.org, Vince Weaver <vincent.weaver@...ne.edu>
Subject: [patch 08/11] perf_event_open.2: 4.1 add aux_watermark



This manpage patch relates to the addition of the aux_watermark attr
field in the following commit:

	commit 1a5941312414c71dece6717da9a0fa1303127afa
	Author: Alexander Shishkin <alexander.shishkin@...ux.intel.com>

	perf: Add wakeup watermark control to the AUX area

	Signed-off-by: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
	Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
	Cc: Borislav Petkov <bp@...en8.de>
	Cc: Frederic Weisbecker <fweisbec@...il.com>
	Cc: H. Peter Anvin <hpa@...or.com>
	Cc: Kaixu Xia <kaixu.xia@...aro.org>
	Cc: Linus Torvalds <torvalds@...ux-foundation.org>
	Cc: Mike Galbraith <efault@....de>
	Cc: Paul Mackerras <paulus@...ba.org>
	Cc: Robert Richter <rric@...nel.org>
	Cc: Stephane Eranian <eranian@...gle.com>
	Cc: Thomas Gleixner <tglx@...utronix.de>
	Cc: acme@...radead.org
	Cc: adrian.hunter@...el.com
	Cc: kan.liang@...el.com
	Cc: markus.t.metzger@...el.com
	Cc: mathieu.poirier@...aro.org
	Link: http://lkml.kernel.org/r/1421237903-181015-10-git-send-email-alexander.shishkin@linux.intel.com
	Signed-off-by: Ingo Molnar <mingo@...nel.org>

Signed-off-by: Vince Weaver <vincent.weaver@...ne.edu>

diff --git a/man2/perf_event_open.2 b/man2/perf_event_open.2
index 238eb62..19c5c23 100644
--- a/man2/perf_event_open.2
+++ b/man2/perf_event_open.2
@@ -259,6 +259,9 @@ struct perf_event_attr {
                                    samples */
     __s32 clockid;              /* clock to use for time fields */
     __u64 sample_regs_intr;     /* regs to dump on samples */
+    __u32 aux_watermark;        /* aux bytes before wakeup */
+    __u32 __reserved_2;         /* align to u64 */
+
 };
 .fi
 .in
@@ -357,6 +360,11 @@ is 104 corresponding to the addition of
 .I sample_regs_intr
 in Linux 3.19.
 .\" commit 60e2364e60e86e81bc6377f49779779e6120977f
+.B PERF_ATTR_SIZE_VER5
+is 112 corresponding to the addition of
+.I aux_watermak
+in Linux 4.1.
+.\" commit 1a5941312414c71dece6717da9a0fa1303127afa
 .TP
 .I "config"
 This specifies which event you want, in conjunction with
@@ -1284,6 +1292,12 @@ with
 .BR CLOCK_MONOTONIC , CLOCK_MONOTONIC_RAW , CLOCK_REALTIME ,
 .BR CLOCK_BOOTTIME ", and " CLOCK_TAI
 currently supported.
+.TP
+.IR "aux_watermark" " (since Linux 4.1)"
+.\" commit 1a5941312414c71dece6717da9a0fa1303127afa
+This specifies how much data is required to trigger a
+.B PERF_RECORD_AUX
+sample.
 .SS Reading results
 Once a
 .BR perf_event_open ()
--
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