Re: current_thread_info() vs task_thread_info(current)

From: Gleb Natapov
Date: Mon Jul 18 2011 - 07:48:56 EST

On Mon, Jul 18, 2011 at 01:44:50PM +0200, Peter Zijlstra wrote:
> On Mon, 2011-07-18 at 14:36 +0300, Gleb Natapov wrote:
> > Why not use per cpu kernel_stack variable on all arches as x86_64 does?
> > How big the advantage of using stack pointer to find current thread info is?
> One less load I imagine.
Oh, yes of course. But what I mean is that if using kernel_stack is good
enough for most popular architecture (x86_64) may be it is good enough for
other architectures too?

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