ttm_mem_global

From: Jerome Glisse
Date: Tue Jul 28 2009 - 12:50:15 EST


On Wed, 2009-07-22 at 10:37 +0200, Thomas HellstrÃm wrote:
> TTM has a device struct per device and an optional global struct that is
> common for all devices and intended to be per subsystem.
>
> The only subsystem currently having a global structure is the memory
> accounting subsystem:
> struct ttm_mem_global

Thomas i don't think the way we init ttm_mem_global today make
it follow the 1 struct ttm_mem_global for everyone. I think it
should be initialized and refcounted by device struct.

So on first device creation a ttm_mem_global is created and
then anytime a new device is created the refcount of ttm_mem_global
is increased. This would mean some static global refcount inside
ttm_memory.c, maybe there is something similar to singleton in
the linux toolbox.

Thought ? Idea ?

Cheers,
Jerome

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