On Thu, 29 Mar 2018 20:08:36 +0200 Peter Zijlstra <pet...@infradead.org> wrote:
> On Thu, Mar 29, 2018 at 04:53:43PM +0200, Martin Schwidefsky wrote: > > The lowcore optimization for softirq_pending field is not really needed, > > just nice to have. But if there is a strong reason to make a common > > definition for it we can certainly do that. > > A slightly related question; would it make sense to move all kernel > static per-cpu stuff into lowcore, or is that asking for too much > trickery? The space in lowcore is quite limited, for zArch the structure is 8K with many pre-defined fields. I fear that putting all of the static per-cpu stuff in there is too much. So far I used the lowcore as optimization for selected per-cpu fields which are performance relevant. -- blue skies, Martin. "Reality continues to ruin my life." - Calvin.
