Messages in this thread | | | Date | Sun, 3 Aug 2008 10:45:06 -0400 (EDT) | From | Steven Rostedt <> | Subject | Re: [RFC] ftrace: support tracing functions in one module |
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On Sun, 3 Aug 2008, Ming Lei wrote:
> Hi, > > IMO, ftrace is a very good tools, which can monitor almost all > functions calling > in the running kernel. The traced result is very complete and intact. > But it seems > too large to grasp the interested content. For example, one may only > have interest in > functions calling in usbcore.ko, but he must trace all the functions > calling in the > kernel, so the tracing result is too large to use it. > > Could you add the support of tracing functions in one module only to ftrace?
Look at the set_ftrace_filter in ftrace.txt. You can pick and choose which functions to trace. All the functions that can be traced is in available_filter_functions in the debugfs/tracing directory.
Note, the functions must execute at least once before they can be recorded.
-- Steve
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