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    Contents of /trunk/kernel26-magellan/patches-2.6.16-r12/0030-2.6.16-sched-s15_test2.patch

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    Revision 72 - (show annotations) (download)
    Mon Jun 5 09:25:38 2006 UTC (17 years, 10 months ago) by niro
    File size: 2149 byte(s) 
    ver bump to 2.6.16-r12:
- updated to linux-2.6.16.19
- updated to ck11
    1 include/linux/sched.h | 1 +
    2 kernel/sched.c | 9 ++++++---
    3 2 files changed, 7 insertions(+), 3 deletions(-)
    4
    5 Index: linux-2.6.16-ck6/include/linux/sched.h
    6 ===================================================================
    7 --- linux-2.6.16-ck6.orig/include/linux/sched.h 2006-04-18 09:28:52.000000000 +1000
    8 +++ linux-2.6.16-ck6/include/linux/sched.h 2006-04-18 09:32:45.000000000 +1000
    9 @@ -961,6 +961,7 @@ static inline void put_task_struct(struc
    10 #define PF_SWAPWRITE 0x01000000 /* Allowed to write to swap */
    11 #define PF_NONSLEEP 0x02000000 /* Waiting on in kernel activity */
    12 #define PF_ISOREF 0x04000000 /* SCHED_ISO task has used up quota */
    13 +#define PF_FORKED 0x08000000 /* Task just forked another process */
    14
    15 /*
    16 * Only the _current_ task can read/write to tsk->flags, but other
    17 Index: linux-2.6.16-ck6/kernel/sched.c
    18 ===================================================================
    19 --- linux-2.6.16-ck6.orig/kernel/sched.c 2006-04-18 09:30:10.000000000 +1000
    20 +++ linux-2.6.16-ck6/kernel/sched.c 2006-04-18 09:32:45.000000000 +1000
    21 @@ -18,7 +18,7 @@
    22 * 2004-04-02 Scheduler domains code by Nick Piggin
    23 * 2006-04-02 Staircase scheduling policy by Con Kolivas with help
    24 * from William Lee Irwin III, Zwane Mwaikambo & Peter Williams.
    25 - * Staircase v15
    26 + * Staircase v15_test2
    27 */
    28
    29 #include <linux/mm.h>
    30 @@ -808,6 +808,9 @@ static inline void recalc_task_prio(task
    31 else
    32 sleep_time = 0;
    33
    34 + if (unlikely(p->flags & PF_FORKED))
    35 + sleep_time = 0;
    36 +
    37 /*
    38 * If we sleep longer than our running total and have not set the
    39 * PF_NONSLEEP flag we gain a bonus.
    40 @@ -846,7 +849,7 @@ static void activate_task(task_t *p, run
    41 p->time_slice = p->slice % rr ? : rr;
    42 if (!rt_task(p)) {
    43 recalc_task_prio(p, now);
    44 - p->flags &= ~PF_NONSLEEP;
    45 + p->flags &= ~(PF_NONSLEEP | PF_FORKED);
    46 p->systime = 0;
    47 p->prio = effective_prio(p);
    48 }
    49 @@ -1463,7 +1466,7 @@ void fastcall wake_up_new_task(task_t *p
    50
    51 /* Forked process gets no bonus to prevent fork bombs. */
    52 p->bonus = 0;
    53 - current->flags |= PF_NONSLEEP;
    54 + current->flags |= PF_FORKED;
    55
    56 if (likely(cpu == this_cpu)) {
    57 activate_task(p, rq, 1);