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authorLinus Torvalds <torvalds@linux-foundation.org>2009-02-17 17:29:15 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2009-02-17 17:29:15 -0500
commitf8effd1a4a1833eac90261d78abacfaefe3d99e4 (patch)
tree8ebecce9f6d5b0faf0efc3828b3b353561fd9341 /Documentation
parent35010334aa007480a833401b80922299cb1a15ef (diff)
parentf9aa28adfc6a4b01268ebb6d88566cca8627905f (diff)
Merge branch 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: doc: mmiotrace.txt, buffer size control change trace: mmiotrace to the tracer menu in Kconfig mmiotrace: count events lost due to not recording
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/tracers/mmiotrace.txt6
1 files changed, 2 insertions, 4 deletions
diff --git a/Documentation/tracers/mmiotrace.txt b/Documentation/tracers/mmiotrace.txt
index cde23b4a12a1..5731c67abc55 100644
--- a/Documentation/tracers/mmiotrace.txt
+++ b/Documentation/tracers/mmiotrace.txt
@@ -78,12 +78,10 @@ to view your kernel log and look for "mmiotrace has lost events" warning. If
78events were lost, the trace is incomplete. You should enlarge the buffers and 78events were lost, the trace is incomplete. You should enlarge the buffers and
79try again. Buffers are enlarged by first seeing how large the current buffers 79try again. Buffers are enlarged by first seeing how large the current buffers
80are: 80are:
81$ cat /debug/tracing/trace_entries 81$ cat /debug/tracing/buffer_size_kb
82gives you a number. Approximately double this number and write it back, for 82gives you a number. Approximately double this number and write it back, for
83instance: 83instance:
84$ echo 0 > /debug/tracing/tracing_enabled 84$ echo 128000 > /debug/tracing/buffer_size_kb
85$ echo 128000 > /debug/tracing/trace_entries
86$ echo 1 > /debug/tracing/tracing_enabled
87Then start again from the top. 85Then start again from the top.
88 86
89If you are doing a trace for a driver project, e.g. Nouveau, you should also 87If you are doing a trace for a driver project, e.g. Nouveau, you should also