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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-02-17 23:29:15 +0100 |
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| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-02-17 23:29:15 +0100 |
| commit | f8effd1a4a1833eac90261d78abacfaefe3d99e4 (patch) | |
| tree | 8ebecce9f6d5b0faf0efc3828b3b353561fd9341 /Documentation | |
| parent | Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kern... (diff) | |
| parent | doc: mmiotrace.txt, buffer size control change (diff) | |
| download | linux-f8effd1a4a1833eac90261d78abacfaefe3d99e4.tar.xz linux-f8effd1a4a1833eac90261d78abacfaefe3d99e4.zip | |
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.txt | 6 |
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 events were lost, the trace is incomplete. You should enlarge the buffers and try again. Buffers are enlarged by first seeing how large the current buffers are: -$ cat /debug/tracing/trace_entries +$ cat /debug/tracing/buffer_size_kb 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 +$ echo 128000 > /debug/tracing/buffer_size_kb Then start again from the top. If you are doing a trace for a driver project, e.g. Nouveau, you should also |