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[PATCH] perf tools pt: Remove obsolete paragraph in intel-pt.c

From Andi Kleen <andi@firstfloor.org>
Newsgroups linux.kernel
Subject [PATCH] perf tools pt: Remove obsolete paragraph in intel-pt.c
Date 2016-11-09 01:20 +0100
Message-ID <sBoMp-8k7-17@gated-at.bofh.it> (permalink)
Organization linux.* mail to news gateway

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From: Andi Kleen <ak@linux.intel.com>

Since the unprivileged sched switch event was added in perf,
PT doesn't need need perf_event_paranoid=-1 anymore for
per cpu decoding. So remove the obsolete paragraph in
the documentation.

Cc: adrian.hunter@intel.com
Signed-off-by: Andi Kleen <ak@linux.intel.com>
---
 tools/perf/Documentation/intel-pt.txt | 10 ----------
 1 file changed, 10 deletions(-)

diff --git a/tools/perf/Documentation/intel-pt.txt b/tools/perf/Documentation/intel-pt.txt
index c6c8318e38a2..c7f817fd3611 100644
--- a/tools/perf/Documentation/intel-pt.txt
+++ b/tools/perf/Documentation/intel-pt.txt
@@ -550,16 +550,6 @@ Unless /proc/sys/kernel/perf_event_paranoid is set to -1, unprivileged users
 have memory limits imposed upon them.  That affects what buffer sizes they can
 have as outlined above.
 
-Unless /proc/sys/kernel/perf_event_paranoid is set to -1, unprivileged users are
-not permitted to use tracepoints which means there is insufficient side-band
-information to decode Intel PT in per-cpu mode, and potentially workload-only
-mode too if the workload creates new processes.
-
-Note also, that to use tracepoints, read-access to debugfs is required.  So if
-debugfs is not mounted or the user does not have read-access, it will again not
-be possible to decode Intel PT in per-cpu mode.
-
-
 sched_switch tracepoint
 -----------------------
 
-- 
2.5.5

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Thread

[PATCH] perf tools pt: Remove obsolete paragraph in intel-pt.c Andi Kleen <andi@firstfloor.org> - 2016-11-09 01:20 +0100
  Re: [PATCH] perf tools pt: Remove obsolete paragraph in intel-pt.c Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-11-09 14:20 +0100
    Re: [PATCH] perf tools pt: Remove obsolete paragraph in intel-pt.c Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-11-09 15:00 +0100
      Re: [PATCH] perf tools pt: Remove obsolete paragraph in intel-pt.c Adrian Hunter <adrian.hunter@intel.com> - 2016-11-09 15:10 +0100
        Re: [PATCH] perf tools pt: Remove obsolete paragraph in intel-pt.c Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-11-09 15:50 +0100
        Re: [PATCH] perf tools pt: Remove obsolete paragraph in intel-pt.c Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-11-09 15:50 +0100
          Re: [PATCH] perf tools pt: Remove obsolete paragraph in intel-pt.c Adrian Hunter <adrian.hunter@intel.com> - 2016-11-10 09:20 +0100

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