On Tuesday 14 June 2011 18:58:35 Michal Nazarewicz wrote:
Is having support for multiple regions a bad thing? Frankly, removing this support will change code from reading context passed as argument to code reading context from global variable. Nothing is gained; functionality is lost.
On Tue, 14 Jun 2011 20:30:07 +0200, Arnd Bergmann wrote:
What is bad IMHO is making them the default, which forces the board code to care about memory management details. I would much prefer to have contiguous allocation parameters tuned automatically to just work on most boards before we add ways to do board-specific hacks.
I see those as orthogonal problems. The code can have support for multiple contexts but by default use a single global context exported as cma_global variable (or some such).
And I'm not arguing against having “contiguous allocation parameters tuned automatically to just work on most boards”. I just don't see the reason to delete functionality that is already there, does not add much code and can be useful.