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    Subject[PATCH 0/6] Support calling functions on dedicated physical cpu
    Date
    Some hardware (e.g. Dell Studio laptops) require special functions to
    be called on physical cpu 0 in order to avoid occasional hangs. When
    running as dom0 under Xen this could be achieved only via special boot
    parameters (vcpu pinning) limiting the hypervisor in it's scheduling
    decisions.

    This patch series is adding a generic function to be able to temporarily
    pin a (virtual) cpu to a dedicated physical cpu for executing above
    mentioned functions on that specific cpu. The drivers (dcdbas and i8k)
    requiring this functionality are modified accordingly.

    Juergen Gross (6):
    xen: sync xen header
    sched: add function to execute a function synchronously on a physical
    cpu
    dcdbas: make use of call_sync_on_phys_cpu()
    hwmon: use call_sync_on_phys_cpu() for dell-smm i8k
    virt, sched: add cpu pinning to call_sync_on_phys_cpu()
    xen: add xen_pin_vcpu() to support calling functions on a dedicated
    pcpu

    arch/x86/include/asm/hypervisor.h | 9 ++++
    arch/x86/xen/enlighten.c | 40 +++++++++++++++
    drivers/firmware/dcdbas.c | 46 ++++++++----------
    drivers/hwmon/dell-smm-hwmon.c | 27 +++++-----
    include/linux/sched.h | 31 ++++++++++++
    include/xen/interface/sched.h | 100 +++++++++++++++++++++++++++++++-------
    kernel/sched/core.c | 30 ++++++++++++
    7 files changed, 224 insertions(+), 59 deletions(-)

    --
    2.6.2

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