Re: [PATCH] tracing: Fix TRACING_SUPPORT dependency

Ug, My Red Hat email was not being updated. I totally missed this
thread.

On Fri, 2009-03-20 at 20:57 +0100, Ingo Molnar wrote:

* Anton Vorontsov [off-list ref] wrote:

quoted

On Fri, Mar 20, 2009 at 08:04:28PM +0100, Ingo Molnar wrote:

quoted

* Anton Vorontsov [off-list ref] wrote:

quoted

commit 40ada30f9621fbd831ac2437b9a2a399aad34b00 ("tracing: clean 
up menu"), despite the "clean up" in its purpose, introduced 
behavioural change for Kconfig symbols: we no longer able to 
select tracing support on PPC32 (because IRQFLAGS_SUPPORT isn't 
yet implemented).

Could you please solve this by implementing proper 
irqflag-tracing support? It's been available upstream for almost 
three years. It's needed for lockdep support as well, etc.

Breaking things via clean up patches is an interesting method of 
encouraging something to implement. ;-)

Surely I'll look into implementing irqflags tracing, but 
considering that no one ever needed this for almost three years, 
[...]

Weird, there's no lockdep support?

I've discussed this with several people before. lockdep exists for
PPC64, but apparently it does not work for PPC32. There's been ongoing
work in this area, but unfortunately, nothing stable has come out of it.

I believe Dale was the last one to be working on this.

-- Steve