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authorLinus Torvalds <torvalds@linux-foundation.org>2008-11-30 13:05:31 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2008-11-30 13:05:31 -0800
commit7bbc67fbf60b698b43692fc6ea16c526bf1c5e26 (patch)
tree35b4c929ecea3d3fc54f221501a25c136bd6b1a6 /Documentation
parent66a45cc4cc1c1f7d1ccae4d0fee261eab5560682 (diff)
parent4f5a7f40ddbae98569acbb99118a98570315579c (diff)
downloadop-kernel-dev-7bbc67fbf60b698b43692fc6ea16c526bf1c5e26.zip
op-kernel-dev-7bbc67fbf60b698b43692fc6ea16c526bf1c5e26.tar.gz
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: ftrace: prevent recursion tracing, doc: update mmiotrace documentation x86, mmiotrace: fix buffer overrun detection function tracing: fix wrong position computing of stack_trace
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/tracers/mmiotrace.txt6
1 files changed, 4 insertions, 2 deletions
diff --git a/Documentation/tracers/mmiotrace.txt b/Documentation/tracers/mmiotrace.txt
index 5bbbe20..cde23b4 100644
--- a/Documentation/tracers/mmiotrace.txt
+++ b/Documentation/tracers/mmiotrace.txt
@@ -37,7 +37,7 @@ $ echo mmiotrace > /debug/tracing/current_tracer
$ cat /debug/tracing/trace_pipe > mydump.txt &
Start X or whatever.
$ echo "X is up" > /debug/tracing/trace_marker
-$ echo none > /debug/tracing/current_tracer
+$ echo nop > /debug/tracing/current_tracer
Check for lost events.
@@ -66,7 +66,7 @@ which action. It is recommended to place descriptive markers about what you
do.
Shut down mmiotrace (requires root privileges):
-$ echo none > /debug/tracing/current_tracer
+$ echo nop > /debug/tracing/current_tracer
The 'cat' process exits. If it does not, kill it by issuing 'fg' command and
pressing ctrl+c.
@@ -81,7 +81,9 @@ are:
$ cat /debug/tracing/trace_entries
gives you a number. Approximately double this number and write it back, for
instance:
+$ echo 0 > /debug/tracing/tracing_enabled
$ echo 128000 > /debug/tracing/trace_entries
+$ echo 1 > /debug/tracing/tracing_enabled
Then start again from the top.
If you are doing a trace for a driver project, e.g. Nouveau, you should also
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