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    Annotation of /trunk/kernel26-magellan/patches-2.6.16-r12/0033-2.6.16-mm-implement-swap-prefetching-sched-batch.patch

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    Revision 72 - (hide annotations) (download)
    Mon Jun 5 09:25:38 2006 UTC (18 years ago) by niro
    File size: 3506 byte(s) 
    ver bump to 2.6.16-r12:
- updated to linux-2.6.16.19
- updated to ck11
    1 niro 72 From akpm@osdl.org Thu May 11 16:09:29 2006
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    18     Message-Id: <200605110612.k4B6CFPG005351@shell0.pdx.osdl.net>
    19     Subject: + mm-implement-swap-prefetching-sched-batch.patch added to -mm tree
    20     To: kernel@kolivas.org,
    21     mm-commits@vger.kernel.org
    22     From: akpm@osdl.org
    23     Date: Wed, 10 May 2006 23:09:29 -0700
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    34     prefetch+static, 0.00010,
    35     sched+param, 0.00010,
    36     current+Set, 0.00010,
    37     sched+add, 0.00010,
    38     sched+add, 0.00010,
    39     weighted+cpu, 0.00010,
    40     CLASS+IDLE, 0.00010,
    41     devel+mm, 0.00010,
    42     add+above, 0.00010,
    43     scheduling+policy, 0.00010,
    44     sched+store, 0.00010,
    45     prevent+high, 0.00010,
    46     shrinker, 0.00010,
    47     high+load, 0.00010,
    48     sched+batch, 0.00010,
    49     sched+batch, 0.00010,
    50     scheduler+sys, 0.00010,
    51     implement+smpnice, 0.00010,
    52     setscheduler, 0.00010,
    53     lowest+if, 0.00010,
    54     suppressing, 0.00010,
    55     sched+prevent, 0.00010,
    56     store+weighted, 0.00010,
    57     sched+setscheduler, 0.00010,
    58     See+to, 0.00010,
    59     stability+of, 0.00010,
    60     to+lowest, 0.00010
    61     X-Length: 4065
    62     X-KMail-EncryptionState:
    63     X-KMail-SignatureState:
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    65     X-UID: 10562
    66     Status: RO
    67     X-Status: OC
    68    
    69    
    70     The patch titled
    71    
    72     mm: swap prefetch sched batch
    73    
    74     has been added to the -mm tree. Its filename is
    75    
    76     mm-implement-swap-prefetching-sched-batch.patch
    77    
    78     See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
    79     out what to do about this
    80    
    81    
    82     From: Con Kolivas <kernel@kolivas.org>
    83    
    84     kprefetchd is a latency insensitive ultra low priority task. Set it to
    85     SCHED_BATCH to obtain the benefit of this scheduling policy hint.
    86    
    87     Signed-off-by: Con Kolivas <kernel@kolivas.org>
    88     Signed-off-by: Andrew Morton <akpm@osdl.org>
    89     ---
    90    
    91     mm/swap_prefetch.c | 3 +++
    92     1 files changed, 3 insertions(+)
    93    
    94     Index: linux-2.6.16-ck11/mm/swap_prefetch.c
    95     ===================================================================
    96     --- linux-2.6.16-ck11.orig/mm/swap_prefetch.c 2006-05-21 12:20:18.000000000 +1000
    97     +++ linux-2.6.16-ck11/mm/swap_prefetch.c 2006-05-21 12:24:07.000000000 +1000
    98     @@ -549,6 +549,9 @@ static enum trickle_return trickle_swap(
    99    
    100     static int kprefetchd(void *__unused)
    101     {
    102     + struct sched_param param = { .sched_priority = 0 };
    103     +
    104     + sched_setscheduler(current, SCHED_BATCH, &param);
    105     set_user_nice(current, 19);
    106     /* Set ioprio to lowest if supported by i/o scheduler */
    107     sys_ioprio_set(IOPRIO_WHO_PROCESS, 0, IOPRIO_CLASS_IDLE);