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    Subject[PATCH 2/7] HOTPLUG: Adapt cpuset hotplug callback to CPU_DYING
    Date
    CPU_DYING is called in atomic context, so don't try to take any locks.

    Signed-off-by: Avi Kivity <avi@qumranet.com>
    ---
    kernel/cpuset.c | 3 +++
    1 files changed, 3 insertions(+), 0 deletions(-)

    diff --git a/kernel/cpuset.c b/kernel/cpuset.c
    index f57854b..d4ab1c6 100644
    --- a/kernel/cpuset.c
    +++ b/kernel/cpuset.c
    @@ -2138,6 +2138,9 @@ static void common_cpu_mem_hotplug_unplug(void)
    static int cpuset_handle_cpuhp(struct notifier_block *nb,
    unsigned long phase, void *cpu)
    {
    + if (phase == CPU_DYING)
    + return NOTIFY_DONE;
    +
    common_cpu_mem_hotplug_unplug();
    return 0;
    }
    --
    1.5.0.6
    -
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