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    Subject[PATCH] irq: make sure irq_desc for legacy irq get correct node setting

    when there is no ram on node 0

    Signed-off-by: Yinghai Lu <yinghai@kernel.org>

    ---
    kernel/irq/handle.c | 5 ++++-
    1 file changed, 4 insertions(+), 1 deletion(-)

    Index: linux-2.6/kernel/irq/handle.c
    ===================================================================
    --- linux-2.6.orig/kernel/irq/handle.c
    +++ linux-2.6/kernel/irq/handle.c
    @@ -161,7 +161,7 @@ int __init early_irq_init(void)

    desc = irq_desc_legacy;
    legacy_count = ARRAY_SIZE(irq_desc_legacy);
    - node = first_online_node;
    + node = first_online_node;

    /* allocate irq_desc_ptrs array based on nr_irqs */
    irq_desc_ptrs = kcalloc(nr_irqs, sizeof(void *), GFP_NOWAIT);
    @@ -172,6 +172,9 @@ int __init early_irq_init(void)

    for (i = 0; i < legacy_count; i++) {
    desc[i].irq = i;
    +#ifdef CONFIG_SMP
    + desc[i].node = node;
    +#endif
    desc[i].kstat_irqs = kstat_irqs_legacy + i * nr_cpu_ids;
    lockdep_set_class(&desc[i].lock, &irq_desc_lock_class);
    alloc_desc_masks(&desc[i], node, true);

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