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    Subject[PATCH] 2.4-ac: more yield abstractions
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    Date
    Alan,

    The attached patch should replace the remaining occurrences of

    current->policy |= SCHED_YIELD;
    schedule();

    with

    yield();

    I missed this previously because they are in arch-dependent non-x86
    code. Patch is against 2.4.19-pre7-ac4, please apply.

    Robert Love

    diff -urN linux-2.4.19-pre7-ac4/arch/alpha/mm/fault.c linux/arch/alpha/mm/fault.c
    --- linux-2.4.19-pre7-ac4/arch/alpha/mm/fault.c Mon Apr 29 12:34:59 2002
    +++ linux/arch/alpha/mm/fault.c Mon Apr 29 12:40:04 2002
    @@ -196,8 +196,7 @@
    */
    out_of_memory:
    if (current->pid == 1) {
    - current->policy |= SCHED_YIELD;
    - schedule();
    + yield();
    down_read(&mm->mmap_sem);
    goto survive;
    }
    diff -urN linux-2.4.19-pre7-ac4/arch/arm/mm/fault-common.c linux/arch/arm/mm/fault-common.c
    --- linux-2.4.19-pre7-ac4/arch/arm/mm/fault-common.c Mon Apr 29 12:35:15 2002
    +++ linux/arch/arm/mm/fault-common.c Mon Apr 29 12:40:18 2002
    @@ -225,8 +225,7 @@
    * If we are out of memory for pid1,
    * sleep for a while and retry
    */
    - tsk->policy |= SCHED_YIELD;
    - schedule();
    + yield();
    goto survive;

    check_stack:
    diff -urN linux-2.4.19-pre7-ac4/arch/ia64/mm/fault.c linux/arch/ia64/mm/fault.c
    --- linux-2.4.19-pre7-ac4/arch/ia64/mm/fault.c Mon Apr 29 12:35:19 2002
    +++ linux/arch/ia64/mm/fault.c Mon Apr 29 12:41:10 2002
    @@ -196,8 +196,7 @@
    out_of_memory:
    up_read(&mm->mmap_sem);
    if (current->pid == 1) {
    - current->policy |= SCHED_YIELD;
    - schedule();
    + yield();
    down_read(&mm->mmap_sem);
    goto survive;
    }
    diff -urN linux-2.4.19-pre7-ac4/arch/m68k/mm/fault.c linux/arch/m68k/mm/fault.c
    --- linux-2.4.19-pre7-ac4/arch/m68k/mm/fault.c Mon Apr 29 12:35:12 2002
    +++ linux/arch/m68k/mm/fault.c Mon Apr 29 12:40:48 2002
    @@ -188,8 +188,7 @@
    out_of_memory:
    up_read(&mm->mmap_sem);
    if (current->pid == 1) {
    - current->policy |= SCHED_YIELD;
    - schedule();
    + yield();
    down_read(&mm->mmap_sem);
    goto survive;
    }
    diff -urN linux-2.4.19-pre7-ac4/arch/mips/mm/fault.c linux/arch/mips/mm/fault.c
    --- linux-2.4.19-pre7-ac4/arch/mips/mm/fault.c Mon Apr 29 12:35:02 2002
    +++ linux/arch/mips/mm/fault.c Mon Apr 29 12:40:26 2002
    @@ -211,8 +211,7 @@
    out_of_memory:
    up_read(&mm->mmap_sem);
    if (tsk->pid == 1) {
    - tsk->policy |= SCHED_YIELD;
    - schedule();
    + yield();
    down_read(&mm->mmap_sem);
    goto survive;
    }
    diff -urN linux-2.4.19-pre7-ac4/arch/mips64/mm/fault.c linux/arch/mips64/mm/fault.c
    --- linux-2.4.19-pre7-ac4/arch/mips64/mm/fault.c Mon Apr 29 12:35:22 2002
    +++ linux/arch/mips64/mm/fault.c Mon Apr 29 12:41:45 2002
    @@ -240,8 +240,7 @@
    out_of_memory:
    up_read(&mm->mmap_sem);
    if (tsk->pid == 1) {
    - tsk->policy |= SCHED_YIELD;
    - schedule();
    + yield();
    down_read(&mm->mmap_sem);
    goto survive;
    }
    diff -urN linux-2.4.19-pre7-ac4/arch/ppc/mm/fault.c linux/arch/ppc/mm/fault.c
    --- linux-2.4.19-pre7-ac4/arch/ppc/mm/fault.c Mon Apr 29 12:35:07 2002
    +++ linux/arch/ppc/mm/fault.c Mon Apr 29 12:40:37 2002
    @@ -197,8 +197,7 @@
    out_of_memory:
    up_read(&mm->mmap_sem);
    if (current->pid == 1) {
    - current->policy |= SCHED_YIELD;
    - schedule();
    + yield();
    down_read(&mm->mmap_sem);
    goto survive;
    }
    diff -urN linux-2.4.19-pre7-ac4/arch/s390/mm/fault.c linux/arch/s390/mm/fault.c
    --- linux-2.4.19-pre7-ac4/arch/s390/mm/fault.c Mon Apr 29 12:35:23 2002
    +++ linux/arch/s390/mm/fault.c Mon Apr 29 12:41:54 2002
    @@ -290,8 +290,7 @@
    out_of_memory:
    up_read(&mm->mmap_sem);
    if (tsk->pid == 1) {
    - tsk->policy |= SCHED_YIELD;
    - schedule();
    + yield();
    down_read(&mm->mmap_sem);
    goto survive;
    }
    diff -urN linux-2.4.19-pre7-ac4/arch/s390x/mm/fault.c linux/arch/s390x/mm/fault.c
    --- linux-2.4.19-pre7-ac4/arch/s390x/mm/fault.c Mon Apr 29 12:35:24 2002
    +++ linux/arch/s390x/mm/fault.c Mon Apr 29 12:42:06 2002
    @@ -290,8 +290,7 @@
    out_of_memory:
    up_read(&mm->mmap_sem);
    if (tsk->pid == 1) {
    - tsk->policy |= SCHED_YIELD;
    - schedule();
    + yield();
    down_read(&mm->mmap_sem);
    goto survive;
    }
    diff -urN linux-2.4.19-pre7-ac4/arch/sh/mm/fault.c linux/arch/sh/mm/fault.c
    --- linux-2.4.19-pre7-ac4/arch/sh/mm/fault.c Mon Apr 29 12:35:18 2002
    +++ linux/arch/sh/mm/fault.c Mon Apr 29 12:41:01 2002
    @@ -207,8 +207,7 @@
    out_of_memory:
    up_read(&mm->mmap_sem);
    if (current->pid == 1) {
    - current->policy |= SCHED_YIELD;
    - schedule();
    + yield();
    down_read(&mm->mmap_sem);
    goto survive;
    }
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