Re: [PATCH] ftrace: Add vim script to enable folding for function_graph traces

Steven Rostedt
2009-08-07T00:04:39Z

On Thu, 6 Aug 2009, Josh Triplett wrote:

> function_graph traces look like nested function calls, complete with
> braces denoting the start and end of functions. function-graph-fold.vim
> teaches vim how to fold these functions, to make it more convenient to
> browse them.
>
> To use, :source function-graph-fold.vim while viewing a function_graph
> trace, or use "view -S function-graph-fold.vim some-trace" to load it
> from the command-line together with a trace. You can then use the usual
> vim fold commands, such as "za", to open and close nested functions.
> While closed, a fold will show the total time taken for a call, as would
> normally appear on the line with the closing brace. Folded functions
> will not include finish_task_switch(), so folding should remain
> relatively sane even through a context switch.
>
> Note that this will almost certainly only work well with a single-CPU
> trace (e.g. trace-cmd report --cpu 1). It also takes some time to run
> (a few seconds for a large trace on my laptop). Nevertheless, I found
> it very handy to get an overview of a trace and then drill down on
> problematic calls.
>
> Signed-off-by: Josh Triplett <josh@joshtriplett.org>

Thanks Josh,

I queued it up for 32.

-- Steve