From: Christian Heinrich <franz-christian.heinrich@inria.fr>
Date: Tue, 5 Jul 2016 15:09:20 +0000 (+0200)
Subject: [DOC] Clarify PAPI counters + privileges
X-Git-Tag: v3_14~794
X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/commitdiff_plain/a0bf088c008c5f07ac578f488aa11173e955a7c0?ds=sidebyside

[DOC] Clarify PAPI counters + privileges
---

diff --git a/doc/doxygen/options.doc b/doc/doxygen/options.doc
index 9f338589f3..cdb3654b27 100644
--- a/doc/doxygen/options.doc
+++ b/doc/doxygen/options.doc
@@ -851,6 +851,8 @@ This is the default value:
     This feature currently requires superuser privileges, as registers are queried.
     Only use this feature with code you trust! Call smpirun for instance via
         smpirun -wrapper "sudo " <your-parameters>
+    or run sudo sh -c "echo 0 > /proc/sys/kernel/perf_event_paranoid"
+    In the later case, sudo will not be required.
 
 \note
     This option is only available when SimGrid was compiled with PAPI support.