Magellan Linux

  • Back to homepage
    • /[pkg-src]/trunk/kernel26-magellan/patches-2.6.16-r12/0006-2.6.16-sched-add-above-background-load-function.patch

    Contents of /trunk/kernel26-magellan/patches-2.6.16-r12/0006-2.6.16-sched-add-above-background-load-function.patch

    Parent Directory Parent Directory | Revision Log Revision Log

    Revision 72 - (show annotations) (download)
    Mon Jun 5 09:25:38 2006 UTC (17 years, 10 months ago) by niro
    File size: 4002 byte(s) 
    ver bump to 2.6.16-r12:
- updated to linux-2.6.16.19
- updated to ck11
    1 From akpm@osdl.org Tue Mar 14 12:58:59 2006
    2 Return-Path: <akpm@osdl.org>
    3 X-Original-To: kernel@kolivas.org
    4 Delivered-To: kernel@kolivas.org
    5 Received: from bhhdoa.org.au (bhhdoa.org.au [65.98.99.88])
    6 by mail.kolivas.org (Postfix) with ESMTP id 92693C60BB
    7 for <kernel@kolivas.org>; Tue, 14 Mar 2006 13:01:34 +1100 (EST)
    8 Received: from smtp.osdl.org (smtp.osdl.org [65.172.181.4])
    9 by bhhdoa.org.au (Postfix) with ESMTP id 27D0B5172C
    10 for <kernel@kolivas.org>; Tue, 14 Mar 2006 11:50:11 +1100 (EST)
    11 Received: from shell0.pdx.osdl.net (fw.osdl.org [65.172.181.6])
    12 by smtp.osdl.org (8.12.8/8.12.8) with ESMTP id k2E21NDZ010803
    13 (version=TLSv1/SSLv3 cipher=EDH-RSA-DES-CBC3-SHA bits=168 verify=NO);
    14 Mon, 13 Mar 2006 18:01:24 -0800
    15 Received: from localhost.localdomain (shell0.pdx.osdl.net [10.9.0.31])
    16 by shell0.pdx.osdl.net (8.13.1/8.11.6) with ESMTP id k2E21NZ2004594;
    17 Mon, 13 Mar 2006 18:01:23 -0800
    18 Message-Id: <200603140201.k2E21NZ2004594@shell0.pdx.osdl.net>
    19 Subject: + sched-add-above-background-load-function.patch added to -mm tree
    20 To: kernel@kolivas.org,
    21 mingo@elte.hu,
    22 pwil3058@bigpond.net.au,
    23 mm-commits@vger.kernel.org
    24 From: akpm@osdl.org
    25 Date: Mon, 13 Mar 2006 17:58:59 -0800
    26 X-Spam-Status: No, hits=1.584 required=5 tests=MAILTO_TO_SPAM_ADDR,NO_REAL_NAME
    27 X-Spam-Level: *
    28 X-Spam-Checker-Version: SpamAssassin 2.63-osdl_revision__1.68__
    29 X-MIMEDefang-Filter: osdl$Revision: 1.1 $
    30 X-Scanned-By: MIMEDefang 2.36
    31 X-DSPAM-Result: Whitelisted
    32 X-DSPAM-Confidence: 0.9997
    33 X-DSPAM-Probability: 0.0000
    34 X-DSPAM-Signature: 4416240067813302711738
    35 X-DSPAM-Factors: 27,
    36 detect+patch, 0.00010,
    37 X-Spam-Status*MAILTO+TO, 0.00010,
    38 X-Spam-Status*ADDR+NO, 0.00010,
    39 niced, 0.00010,
    40 sched+add, 0.00010,
    41 sched+add, 0.00010,
    42 sched+extern, 0.00010,
    43 Subject*load, 0.00010,
    44 is+sched, 0.00010,
    45 sched+cleanup, 0.00010,
    46 au+Signed, 0.00010,
    47 X-Spam-Status*tests+MAILTO, 0.00010,
    48 sched+implement, 0.00010,
    49 smpnice+patch, 0.00010,
    50 To*org+mingo, 0.00010,
    51 noninteractive+use, 0.00010,
    52 load+per, 0.00010,
    53 alter+uninterruptible, 0.00010,
    54 puN+include, 0.00010,
    55 blkdev, 0.00010,
    56 To*au+mm, 0.00010,
    57 akpm+include, 0.00010,
    58 in+sched, 0.00010,
    59 type+patch, 0.00010,
    60 X-Spam-Status*TO, 0.00010,
    61 activated+patch, 0.00010,
    62 X-Spam-Status*ADDR, 0.00010
    63 X-Length: 4732
    64 X-KMail-EncryptionState: N
    65 X-KMail-SignatureState: N
    66 X-KMail-MDN-Sent:
    67 Content-Type:
    68 X-UID: 9775
    69
    70
    71 The patch titled
    72
    73 sched: add above background load function
    74
    75 has been added to the -mm tree. Its filename is
    76
    77 sched-add-above-background-load-function.patch
    78
    79 See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
    80 out what to do about this
    81
    82
    83 From: Con Kolivas <kernel@kolivas.org>
    84
    85 Add an above_background_load() function which can be used by other
    86 subsystems to detect if there is anything besides niced tasks running.
    87 Place it in sched.h to allow it to be compiled out if not used.
    88
    89 Signed-off-by: Con Kolivas <kernel@kolivas.org>
    90 Acked-by: Ingo Molnar <mingo@elte.hu>
    91 Cc: Peter Williams <pwil3058@bigpond.net.au>
    92 Signed-off-by: Andrew Morton <akpm@osdl.org>
    93 include/linux/sched.h | 16 ++++++++++++++++
    94 1 files changed, 16 insertions(+)
    95
    96 Index: linux-2.6.16-ck1/include/linux/sched.h
    97 ===================================================================
    98 --- linux-2.6.16-ck1.orig/include/linux/sched.h 2006-03-20 20:46:46.000000000 +1100
    99 +++ linux-2.6.16-ck1/include/linux/sched.h 2006-03-20 20:46:47.000000000 +1100
    100 @@ -643,6 +643,22 @@ extern unsigned int max_cache_size;
    101
    102 #endif /* CONFIG_SMP */
    103
    104 +/*
    105 + * A runqueue laden with a single nice 0 task scores a weighted_cpuload of
    106 + * SCHED_LOAD_SCALE. This function returns 1 if any cpu is laden with a
    107 + * task of nice 0 or enough lower priority tasks to bring up the
    108 + * weighted_cpuload
    109 + */
    110 +static inline int above_background_load(void)
    111 +{
    112 + unsigned long cpu;
    113 +
    114 + for_each_online_cpu(cpu) {
    115 + if (weighted_cpuload(cpu) >= SCHED_LOAD_SCALE)
    116 + return 1;
    117 + }
    118 + return 0;
    119 +}
    120
    121 struct io_context; /* See blkdev.h */
    122 void exit_io_context(void);