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Subject[patch 06/10] perf_event_open.2: 4.1 add AUX sample support

This manpage patch relates to the addition of the AUX sample type
as added in the following commit:

commit 68db7e98c3a6ebe7284b6cf14906ed7c55f3f7f0
Author: Alexander Shishkin <>

perf: Add AUX record

Signed-off-by: Alexander Shishkin <>
Signed-off-by: Peter Zijlstra (Intel) <>
Cc: Arnaldo Carvalho de Melo <>
Cc: Borislav Petkov <>
Cc: Frederic Weisbecker <>
Cc: H. Peter Anvin <>
Cc: Kaixu Xia <>
Cc: Linus Torvalds <>
Cc: Mike Galbraith <>
Cc: Paul Mackerras <>
Cc: Robert Richter <>
Cc: Stephane Eranian <>
Cc: Thomas Gleixner <>
Signed-off-by: Ingo Molnar <>

Signed-off-by: Vince Weaver <>

diff --git a/man2/perf_event_open.2 b/man2/perf_event_open.2
index 01ee579..98aef57 100644
--- a/man2/perf_event_open.2
+++ b/man2/perf_event_open.2
@@ -2310,6 +2310,39 @@ is the flags information.
.I filename
is a string describing the backing of the allocated memory.
+.BR PERF_RECORD_AUX " (since Linux 4.1)"
+\" commit 68db7e98c3a6ebe7284b6cf14906ed7c55f3f7f0
+This record reports that new data is available in the separate
+AUX buffer region.
+ +4n
+struct {
+ struct perf_event_header header;
+ u64 aux_offset;
+ u64 aux_size;
+ u64 flags;
+ struct sample_id sample_id;
+.I aux_offset
+offset in the AUX mmap region where the new data begins.
+.I aux_size
+size of the data made available.
+.I flags
+describes the aux update.
+if set then the data returned was truncated to fix the available
+buffer size.
.SS Overflow handling
Events can be set to notify when a threshold is crossed,

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