Re: [PATCH 3/5][RFC] ftrace: Return pt_regs to function tracecallback (x86_64 only so

[Steven Rostedt]

On Fri, 2011-08-12 at 09:55 +0900, Masami Hiramatsu wrote:

> Please note, kprobes is the function which basically provides a
> breakpoint handler in the kernel. Users expect that. So all registers
> should be provided as breakpoint interrupt does. That's what I said
> "transparently".

Well, I think I'm on the right track then. Because I'm working to get
the function graph tracer to use this functionality as well.

I believe that I can make this work "transparently" too.

I'm now working on having ftrace use the breakpoint/update method as
well as the stop_machine() method. If an arch has an alternative to
stop_machine, then it can use that method instead.

-- Steve



--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/