Hi,

kmalloc(constant,GFP_KERNEL) spends a singificant amount of time in the 
initial loop that finds the correct cache. For constant allocations, the 
correct cache can be indentified at compile time.

What do you think about the attached patch? It's not pretty, but it 
should work will all gcc versions. Any other ideas?
Just FYI: The function that forced me to use use switch/case instead of 
if is interrupts_open in fs/proc/proc_misc.c.

--
    Manfred