Re: [PATCH] perf_event_open.2: document new perf_event_paranoid default
From: Michael Kerrisk (man-pages) <hidden>
Date: 2016-07-07 10:09:56
On 07/06/2016 11:43 AM, Jann Horn wrote:
Signed-off-by: Jann Horn <redacted>
Thanks, Jann. Applied! Cheers, Michael
quoted hunk
--- man2/perf_event_open.2 | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)diff --git a/man2/perf_event_open.2 b/man2/perf_event_open.2 index 0e42c50..3cbf080 100644 --- a/man2/perf_event_open.2 +++ b/man2/perf_event_open.2@@ -2747,14 +2747,15 @@ Files in .TP .I /proc/sys/kernel/perf_event_paranoid +.\" default changed in commit 0161028b7c8aebef64194d3d73e43bc3b53b5c66 The .I perf_event_paranoid file can be set to restrict access to the performance counters. .RS .IP 2 4 -allow only user-space measurements. +allow only user-space measurements (default since Linux 4.6). .IP 1 -allow both kernel and user measurements (default). +allow both kernel and user measurements (default before Linux 4.6). .IP 0 allow access to CPU-specific data but not raw tracepoint samples. .IP \-1
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