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    Subject[this_cpu_xx V4 14/20] this_cpu ops: Remove pageset_notifier
    Remove the pageset notifier since it only marks that a processor
    exists on a specific node. Move that code into the vmstat notifier.

    Signed-off-by: Christoph Lameter <cl@linux-foundation.org>

    ---
    mm/page_alloc.c | 27 ---------------------------
    mm/vmstat.c | 1 +
    2 files changed, 1 insertion(+), 27 deletions(-)

    Index: linux-2.6/mm/vmstat.c
    ===================================================================
    --- linux-2.6.orig/mm/vmstat.c 2009-09-29 09:02:29.000000000 -0500
    +++ linux-2.6/mm/vmstat.c 2009-09-29 09:04:18.000000000 -0500
    @@ -906,6 +906,7 @@ static int __cpuinit vmstat_cpuup_callba
    case CPU_ONLINE:
    case CPU_ONLINE_FROZEN:
    start_cpu_timer(cpu);
    + node_set_state(cpu_to_node(cpu), N_CPU);
    break;
    case CPU_DOWN_PREPARE:
    case CPU_DOWN_PREPARE_FROZEN:
    Index: linux-2.6/mm/page_alloc.c
    ===================================================================
    --- linux-2.6.orig/mm/page_alloc.c 2009-09-29 09:04:16.000000000 -0500
    +++ linux-2.6/mm/page_alloc.c 2009-09-29 09:04:18.000000000 -0500
    @@ -3097,26 +3097,6 @@ static void setup_pagelist_highmark(stru
    */
    static DEFINE_PER_CPU(struct per_cpu_pageset, boot_pageset);

    -static int __cpuinit pageset_cpuup_callback(struct notifier_block *nfb,
    - unsigned long action,
    - void *hcpu)
    -{
    - int cpu = (long)hcpu;
    -
    - switch (action) {
    - case CPU_UP_PREPARE:
    - case CPU_UP_PREPARE_FROZEN:
    - node_set_state(cpu_to_node(cpu), N_CPU);
    - break;
    - default:
    - break;
    - }
    - return NOTIFY_OK;
    -}
    -
    -static struct notifier_block __cpuinitdata pageset_notifier =
    - { &pageset_cpuup_callback, NULL, 0 };
    -
    /*
    * Allocate per cpu pagesets and initialize them.
    * Before this call only boot pagesets were available.
    @@ -3141,13 +3121,6 @@ void __init setup_per_cpu_pageset(void)
    percpu_pagelist_fraction));
    }
    }
    -
    - /*
    - * The boot cpu is always the first active.
    - * The boot node has a processor
    - */
    - node_set_state(cpu_to_node(smp_processor_id()), N_CPU);
    - register_cpu_notifier(&pageset_notifier);
    }

    static noinline __init_refok
    --


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