[SCM] GNU Mach branch, master, updated. 24832de763ad58be6afdcff6c761b54ccee42667

[Richard Braun]

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- Log -----------------------------------------------------------------
commit 24832de763ad58be6afdcff6c761b54ccee42667
Author: Richard Braun <address@hidden>
Date:   Sun Apr 21 01:30:27 2013 +0200

    Rework slab lists handling
    
    Don't enforce strong ordering of partial slabs. Separating partial slabs
    from free slabs is already effective against fragmentation, and sorting
    would sometimes cause pathological scalability issues. In addition, store
    new slabs (whether free or partial) in LIFO order for better cache usage.
    
    * kern/slab.c (kmem_cache_grow): Insert new slab at the head of the slabs 
list.
    (kmem_cache_alloc_from_slab): Likewise. In addition, don't sort partial 
slabs.
    (kmem_cache_free_to_slab): Likewise.
    * kern/slab.h: Remove comment about partial slabs sorting.

-----------------------------------------------------------------------

Summary of changes:
 kern/slab.c |   82 ++++++-----------------------------------------------------
 kern/slab.h |    7 -----
 2 files changed, 8 insertions(+), 81 deletions(-)


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