Messages in this thread | | | Date | Sat, 03 Oct 2009 22:33:19 +0300 | From | Pekka Enberg <> | Subject | Re: [this_cpu_xx V4 02/20] this_cpu: X86 optimized this_cpu operations |
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Hi,
Ingo Molnar wrote: > * cl@linux-foundation.org <cl@linux-foundation.org> wrote: > >> Basically the existing percpu ops can be used for this_cpu variants >> that allow operations also on dynamically allocated percpu data. >> However, we do not pass a reference to a percpu variable in. Instead a >> dynamically or statically allocated percpu variable is provided. >> >> Preempt, the non preempt and the irqsafe operations generate the same >> code. It will always be possible to have the requires per cpu >> atomicness in a single RMW instruction with segment override on x86. >> >> 64 bit this_cpu operations are not supported on 32 bit. >> >> Signed-off-by: Christoph Lameter <cl@linux-foundation.org> > > Acked-by: Ingo Molnar <mingo@elte.hu>
I haven't looked at the series in detail but AFAICT the SLUB patches depend on the x86 ones. Any suggestions how to get all this into linux-next? Should I make a topic branch in slab.git on top of -tip or something?
Pekka
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