linux-kernel - [PATCH 5/6] perf, tools: Update documentation about raw event setup

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Message-ID: <1344361396-7237-6-git-send-email-robert.richter@amd.com>
Date:	Tue, 7 Aug 2012 19:43:15 +0200
From:	Robert Richter <robert.richter@....com>
To:	Arnaldo Carvalho de Melo <acme@...hat.com>
CC:	Ingo Molnar <mingo@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Robert Richter <robert.richter@....com>
Subject: [PATCH 5/6] perf, tools: Update documentation about raw event setup

It was missing that only certain bit fields are passed to the config
value which confused users. Updating it.

Signed-off-by: Robert Richter <robert.richter@....com>
---
 tools/perf/Documentation/perf-list.txt |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/tools/perf/Documentation/perf-list.txt b/tools/perf/Documentation/perf-list.txt
index ddc2252..232be51 100644
--- a/tools/perf/Documentation/perf-list.txt
+++ b/tools/perf/Documentation/perf-list.txt
@@ -15,6 +15,7 @@ DESCRIPTION
 This command displays the symbolic event types which can be selected in the
 various perf commands with the -e option.
 
+[[EVENT_MODIFIERS]]
 EVENT MODIFIERS
 ---------------
 
@@ -44,6 +45,11 @@ layout of IA32_PERFEVTSELx MSRs (see [Intel® 64 and IA-32 Architectures Softwar
 of IA32_PERFEVTSELx MSRs) or AMD's PerfEvtSeln (see [AMD64 Architecture Programmer’s Manual Volume 2: System Programming], Page 344,
 Figure 13-7 Performance Event-Select Register (PerfEvtSeln)).
 
+Note: Only the following bit fields can be set in x86 counter
+registers: event, umask, edge, inv, cmask. Esp. guest/host only and
+OS/user mode flags must be setup using <<EVENT_MODIFIERS, EVENT
+MODIFIERS>>.
+
 Example:
 
 If the Intel docs for a QM720 Core i7 describe an event as:
-- 
1.7.8.4


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