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Message-Id: <1290077254-12165-3-git-send-email-andi@firstfloor.org>
Date: Thu, 18 Nov 2010 11:47:32 +0100
From: Andi Kleen <andi@...stfloor.org>
To: a.p.zijlstra@...llo.nl
Cc: eranian@...gle.com, linux-kernel@...r.kernel.org, x86@...nel.org,
Andi Kleen <ak@...ux.intel.com>
Subject: [PATCH 2/4] perf: Document enhanced event encoding for OFFCORE_MSR
From: Andi Kleen <ak@...ux.intel.com>
Signed-off-by: Andi Kleen <ak@...ux.intel.com>
---
tools/perf/Documentation/perf-list.txt | 7 +++++++
1 files changed, 7 insertions(+), 0 deletions(-)
diff --git a/tools/perf/Documentation/perf-list.txt b/tools/perf/Documentation/perf-list.txt
index 399751b..700afd7 100644
--- a/tools/perf/Documentation/perf-list.txt
+++ b/tools/perf/Documentation/perf-list.txt
@@ -58,6 +58,13 @@ raw encoding of 0x1A8 can be used:
perf stat -e r1a8 -a sleep 1
perf record -e r1a8 ...
+Some special events on x86 encode additional data in the normally unused
+[32;63] bits of the raw value. This is particularly used for
+the OFFCORE_RESPONSE events on Intel Core i7. The 16bit
+mask in the OFFCORE_RESPONSE register is put into bits [32;48].
+For example the OFFCORE_RESPONSE_0.ANY_DATA.ANY_CACHE_DRAM event
+is encoded as r00007f11004301b7.
+
You should refer to the processor specific documentation for getting these
details. Some of them are referenced in the SEE ALSO section below.
--
1.7.1
--
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