linux/samples/trace_events, branch v3.4-rc2

debugfs: Change debuhgfs directory of trace-events-sample.h

2009-09-15T16:50:48Z

Default directory of debug filesystem for ftrace is /sys/kernel/debug/. Signed-off-by: GeunSik Lim Signed-off-by: Greg Kroah-Hartman

tracing/events: Move TRACE_SYSTEM outside of include guard

2009-07-13T08:59:55Z

If TRACE_INCLDUE_FILE is defined, will be included and compiled, otherwise it will be So TRACE_SYSTEM should be defined outside of #if proctection, just like TRACE_INCLUDE_FILE. Imaging this scenario: #include -> TRACE_SYSTEM == foo ... #include -> TRACE_SYSTEM == bar ... #define CREATE_TRACE_POINTS #include -> TRACE_SYSTEM == bar !!! and then bar.h will be included and compiled. Signed-off-by: Li Zefan Cc: Steven Rostedt Cc: Frederic Weisbecker LKML-Reference: <4A5A9CF1.2010007@cn.fujitsu.com> Signed-off-by: Ingo Molnar

tracing: update sample event documentation

2009-06-16T23:53:07Z

The comments in the sample code is a bit confusing. This patch cleans them up a little. Signed-off-by: Steven Rostedt

tracing: update sample with TRACE_INCLUDE_FILE

2009-05-07T03:10:42Z

When creating trace events for ftrace, the header file with the TRACE_EVENT macros must also have a macro called TRACE_SYSTEM. This macro describes the name of the system the TRACE_EVENTS are defined for. It also doubles as a way for the define_trace.h file to include the file that included it. For example: in irq.h #define TRACE_SYSTEM irq [...] #include The define_trace will use TRACE_SYSTEM to include irq.h. But if the name of the trace system does not match the name of the trace header file, one can override it with: Which will change define_trace.h to inclued foo_trace.h instead of foo.h The sample comments this, but people that use the sample code will more likely use the code and not read the comments. This patch changes the sample code to use the TRACE_INCLUDE_FILE to better show developers how to use it. [ Impact: make sample less confusing to developers ] Reported-by: Christoph Hellwig Signed-off-by: Steven Rostedt

tracing: small trave_events sample Makefile cleanup

2009-05-06T14:48:56Z

Use -I$(src) to add the current directory the include path. [ Impact: cleanup ] Signed-off-by: Christoph Hellwig Acked-by: Steven Rostedt LKML-Reference: Signed-off-by: Ingo Molnar

tracing/events: don't say hi when loading the trace event sample

2009-05-06T08:38:18Z

The sample is useful for testing, and I'm using it. But after loading the module, it keeps saying hi every 10 seconds, this may be disturbing. Also Steven said commenting out the "hi" helped in causing races. :) [ Impact: make testing a bit easier ] Signed-off-by: Li Zefan Acked-by: Steven Rostedt Acked-by: Frederic Weisbecker LKML-Reference: <4A00F6AD.2070008@cn.fujitsu.com> Signed-off-by: Ingo Molnar

tracing/events: add trace-events-sample

2009-04-15T02:09:18Z

This patch adds a sample to the samples directory on how to create and use TRACE_EVENT trace points. Signed-off-by: Steven Rostedt