[v2, 01/10] powerpc/mm/slice: Simplify and optimise slice context initialisation

Michael Ellerman patch-notifications at ellerman.id.au
Wed Mar 14 20:28:42 AEDT 2018

On Wed, 2018-03-07 at 01:37:09 UTC, Nicholas Piggin wrote:
> The slice state of an mm gets zeroed then initialised upon exec.
> This is the only caller of slice_set_user_psize now, so that can be
> removed and instead implement a faster and simplified approach that
> requires no locking or checking existing state.
> This speeds up vfork+exec+exit performance on POWER8 by 3%.
> Signed-off-by: Nicholas Piggin <npiggin at gmail.com>

Patches 1-9 applied to powerpc next, thanks.



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