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* [patch 08/11] perf_event_open.2: 4.1 add aux_watermark
@ 2015-07-23 17:14 Vince Weaver
       [not found] ` <alpine.DEB.2.20.1507231313580.3742-6xBS8L8d439fDsnSvq7Uqyn2WXadKZNJe7X0jjDqjFGHXe+LvDLADg@public.gmane.org>
  0 siblings, 1 reply; 2+ messages in thread
From: Vince Weaver @ 2015-07-23 17:14 UTC (permalink / raw)
  To: Michael Kerrisk (man-pages)
  Cc: linux-man-u79uwXL29TY76Z2rM5mHXA,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA, Peter Zijlstra, Ingo Molnar,
	Arnaldo Carvalho de Melo, Stephane Eranian, Alexander Shishkin,
	Borislav Petkov, Frederic Weisbecker, H. Peter Anvin, Kaixu Xia,
	Linus Torvalds, Mike Galbraith, Robert Richter, Thomas Gleixner,
	adrian.hunter-ral2JQCrhuEAvxtiuMwx3w,
	kan.liang-ral2JQCrhuEAvxtiuMwx3w,
	markus.t.metzger-ral2JQCrhuEAvxtiuMwx3w,
	mathieu.poirier-QSEj5FYQhm4dnm+yROfE0A, Vince Weaver



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

	commit 1a5941312414c71dece6717da9a0fa1303127afa
	Author: Alexander Shishkin <alexander.shishkin-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>

	perf: Add wakeup watermark control to the AUX area

	Signed-off-by: Alexander Shishkin <alexander.shishkin-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
	Signed-off-by: Peter Zijlstra (Intel) <peterz-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
	Cc: Borislav Petkov <bp-Gina5bIWoIWzQB+pC5nmwQ@public.gmane.org>
	Cc: Frederic Weisbecker <fweisbec-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
	Cc: H. Peter Anvin <hpa-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>
	Cc: Kaixu Xia <kaixu.xia-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
	Cc: Linus Torvalds <torvalds-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
	Cc: Mike Galbraith <efault-Mmb7MZpHnFY@public.gmane.org>
	Cc: Paul Mackerras <paulus-eUNUBHrolfbYtjvyW6yDsg@public.gmane.org>
	Cc: Robert Richter <rric-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
	Cc: Stephane Eranian <eranian-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
	Cc: Thomas Gleixner <tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>
	Cc: acme-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org
	Cc: adrian.hunter-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org
	Cc: kan.liang-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org
	Cc: markus.t.metzger-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org
	Cc: mathieu.poirier-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org
	Link: http://lkml.kernel.org/r/1421237903-181015-10-git-send-email-alexander.shishkin-VuQAYsv1563Yd54FQh9/CA@public.gmane.org
	Signed-off-by: Ingo Molnar <mingo-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>

Signed-off-by: Vince Weaver <vincent.weaver-e7X0jjDqjFGHXe+LvDLADg@public.gmane.org>

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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2015-07-23 17:14 [patch 08/11] perf_event_open.2: 4.1 add aux_watermark Vince Weaver
     [not found] ` <alpine.DEB.2.20.1507231313580.3742-6xBS8L8d439fDsnSvq7Uqyn2WXadKZNJe7X0jjDqjFGHXe+LvDLADg@public.gmane.org>
2015-10-14  6:34   ` Michael Kerrisk (man-pages)

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