Questions about porting perfmon2 to powerpc
Arnd Bergmann
arnd at arndb.de
Fri Apr 6 06:37:01 EST 2007
On Thursday 05 April 2007, Kevin Corry wrote:
> For the moment, I made the change to topology_init() since it was the simplest
> fix to get things working. I have considered switching the perfmon2
> initialization to __initcall(), but there are apparently some timing issues
> with ensuring that the perfmon2 core code is initialized before any of its
> sub-modules. Since they could all be compiled statically in the kernel, I'm
> not sure if there's a way to ensure the ordering of calls within a single
> initcall level. I'll need to ask Stephane if there were any other reasons why
> subsys_initcall() was used for perfmon2.
If they all come from the same directory, you can simply order them in
the Makefile. If a module in arch/ needs to be initialized after one in
drivers/, that's not possible though, and changing topology_init() should
be the best option.
Arnd <><
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