[SCM] GNU Mach branch, master, updated. v1.4-373-g8982de2

[Justus Winter]

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- Log -----------------------------------------------------------------
commit 8982de2eb4fa2fa6f5a350c348c211542aecfaa1
Author: Justus Winter <address@hidden>
Date:   Thu Jan 2 16:32:00 2014 +0100

    kern: make struct kmem_cache fit into two cache lines
    
    Previously, the size of struct kmem_cache was 136 bytes, just eight
    bytes larger than 128 bytes, which is typically two cache lines on
    today's CPUs.
    
    By reducing the size of the name field which holds a human-readable
    description by eight bytes to 24 bytes, the struct kmem_cache can be
    made fit into two cache lines.  This change should not affect the
    usefulness of this field.  For reference, the length of the largest
    hard-coded name is 17.
    
    * kern/slab.h (KMEM_CACHE_NAME_SIZE): Define to 24.

commit d775e04dd3ee9648ca91b1df965b435a34632606
Author: Justus Winter <address@hidden>
Date:   Thu Jan 2 16:14:19 2014 +0100

    kern: reduce the size of struct task
    
    * kern/task.h (struct task): Reduce the size of struct task by
    2 * sizeof boolean_t by using a bit field for the boolean flags.

commit 2f8477fb3bb1b95d2f814d76cf37777ec58c4c76
Author: Justus Winter <address@hidden>
Date:   Thu Jan 2 15:54:17 2014 +0100

    vm: reduce the size of struct vm_page
    
    Previously, the bit field left 31 bits unused.  By reducing the size
    of wire_count by one bit, the size of the whole struct is reduced by
    four bytes.
    
    * vm/vm_page.h (struct vm_page): Reduce the size of wire_count to 15
    bits.

commit 93b9dca0226cd08fd07db0ec72c34800720309be
Author: Justus Winter <address@hidden>
Date:   Thu Jan 2 15:14:55 2014 +0100

    vm: merge the two bit fields in struct vm_page
    
    * vm/vm_page.h (struct vm_page): Merge the two bit fields.

commit 70833d9dc6c145e4535f94220eacfc05160bc110
Author: Justus Winter <address@hidden>
Date:   Thu Jan 2 15:03:29 2014 +0100

    vm: remove NS32000-specific padding from struct vm_page
    
    Apparently, the NS32000 was a 32-bit CPU from the 1990ies.  The string
    "ns32000" appears nowhere else in the source.
    
    * vm/vm_page.h (struct vm_page): Remove NS32000-specific padding.

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

Summary of changes:
 kern/slab.h  |    2 +-
 kern/task.h  |    8 +++++---
 vm/vm_page.h |   15 ++++-----------
 3 files changed, 10 insertions(+), 15 deletions(-)


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