Re: [PATCH] powerpc/mpic: improve interrupt handling performance

2009-05-10 Thread Michael Ellerman
On Fri, 2009-05-08 at 17:08 -0500, Kumar Gala wrote: > Before when we were setting up the irq host map for mpic we passed in > just isu_size for the size of the linear map. However, for a number of > mpic implementations we have no isu (thus pass in 0) and will end up > with a no linear map (size

[PATCH] powerpc/mpic: improve interrupt handling performance

2009-05-08 Thread Kumar Gala
Before when we were setting up the irq host map for mpic we passed in just isu_size for the size of the linear map. However, for a number of mpic implementations we have no isu (thus pass in 0) and will end up with a no linear map (size = 0). This causes us to always call irq_find_mapping() from