Re: [PATCH 2/2] trace,x86: Add x86 irq vector entry/exit tracepoints

[Steven Rostedt]

On Wed, 2011-12-14 at 17:34 +0100, Frederic Weisbecker wrote:

> Well ftrace is a whole subsystem that includes the function tracer and also an interface
> for tracepoints in debugfs. 

Confusing isn't it ;)

> I was rather suggesting the latter one. This is a good
> choice for background tracing. And it supports stacktraces. If those generate too much
> overhead perhaps you can tune the number of entries in the stacktrace, I don't remember
> if we can do that currently but this can be an interesting feature.

That would probably be trivial to add, especially now that we allow
pretty much a full stack trace anyway.

-- Steve



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