Eric Lee / smarc-fsl-linux-kernel

09 Apr, 2009

1 commit

31 Mar, 2009

1 commit

  • 2ed8d2b3a   PM: Rework handling of interrupts during suspend-resume ... Browse Code »

    Use the functions introduced in by the previous patch,
    suspend_device_irqs(), resume_device_irqs() and check_wakeup_irqs(),
    to rework the handling of interrupts during suspend (hibernation) and
    resume. Namely, interrupts will only be disabled on the CPU right
    before suspending sysdevs, while device drivers will be prevented
    from receiving interrupts, with the help of the new helper function,
    before their "late" suspend callbacks run (and analogously during
    resume).

    In addition, since the device interrups are now disabled before the
    CPU has turned all interrupts off and the CPU will ACK the interrupts
    setting the IRQ_PENDING bit for them, check in sysdev_suspend() if
    any wake-up interrupts are pending and abort suspend if that's the
    case.

    Signed-off-by: Rafael J. Wysocki
    Acked-by: Ingo Molnar

    Rafael J. Wysocki
     

23 Feb, 2009

2 commits

12 Jan, 2009

1 commit

  • f7df8ed16   cpumask: convert misc driver functions ... Browse Code »

    Impact: use new cpumask API.

    Convert misc driver functions to use struct cpumask.

    To Do:
    - Convert iucv_buffer_cpumask to cpumask_var_t.

    Signed-off-by: Rusty Russell
    Signed-off-by: Mike Travis
    Acked-by: Dean Nelson
    Cc: Robert Richter
    Cc: oprofile-list@lists.sf.net
    Cc: Jeremy Fitzhardinge
    Cc: Chris Wright
    Cc: virtualization@lists.osdl.org
    Cc: xen-devel@lists.xensource.com
    Cc: Ursula Braun
    Cc: linux390@de.ibm.com
    Cc: linux-s390@vger.kernel.org

    Rusty Russell
     

24 Oct, 2008

1 commit

25 Aug, 2008

1 commit

18 Jul, 2008

1 commit

  • 55ca089e2   linux-next: pci tree build failure ... Browse Code »

    Today's linux-next build (x86_64 allmodconfig) failed like this:

    drivers/xen/manage.c: In function 'xen_suspend':
    drivers/xen/manage.c:66: error: too few arguments to function 'device_power_up'
    drivers/xen/manage.c: In function 'do_suspend':
    drivers/xen/manage.c:117: error: too few arguments to function 'device_resume'

    Caused by commit 1eede070a59e1cc73da51e1aaa00d9ab86572cfc ("Introduce new
    top level suspend and hibernation callbacks") interacting with new
    usages ...

    Signed-off-by: Stephen Rothwell
    Cc: Jeremy Fitzhardinge
    Acked-by: Rafael J. Wysocki
    Cc: Jesse Barnes
    Signed-off-by: Ingo Molnar

    Stephen Rothwell
     

16 Jul, 2008

1 commit

  • ad55db9fe   xen: add xen_arch_resume()/xen_timer_resume hook for ia64 support ... Browse Code »

    add xen_timer_resume() hook.

    Timer resume should be done after event channel is resumed.
    add xen_arch_resume() hook when ipi becomes usable after resume.
    After resume, some cpu specific resource must be reinitialized
    on ia64 that can't be set by another cpu.

    However available hooks is run once on only one cpu so that ipi has
    to be used.

    During stop_machine_run() ipi can't be used because interrupt is masked.
    So add another hook after stop_machine_run().
    Another approach might be use resume hook which is run by
    device_resume(). However device_resume() may be executed on
    suspend error recovery path.

    So it is necessary to determine whether it is executed on real resume path
    or error recovery path.

    Signed-off-by: Isaku Yamahata
    Cc: Stephen Tweedie
    Cc: Eduardo Habkost
    Cc: Mark McLoughlin
    Signed-off-by: Ingo Molnar

    Isaku Yamahata
     

02 Jun, 2008

1 commit

27 May, 2008

3 commits

  • 359cdd3f8   xen: maintain clock offset over save/restore ... Browse Code »

    Hook into the device model to make sure that timekeeping's resume handler
    is called. This deals with our clocksource's non-monotonicity over the
    save/restore. Explicitly call clock_has_changed() to make sure that
    all the timers get retriggered properly.

    Signed-off-by: Jeremy Fitzhardinge
    Signed-off-by: Thomas Gleixner

    Jeremy Fitzhardinge
     
  • 0e91398f2   xen: implement save/restore ... Browse Code »

    This patch implements Xen save/restore and migration.

    Saving is triggered via xenbus, which is polled in
    drivers/xen/manage.c. When a suspend request comes in, the kernel
    prepares itself for saving by:

    1 - Freeze all processes. This is primarily to prevent any
    partially-completed pagetable updates from confusing the suspend
    process. If CONFIG_PREEMPT isn't defined, then this isn't necessary.

    2 - Suspend xenbus and other devices

    3 - Stop_machine, to make sure all the other vcpus are quiescent. The
    Xen tools require the domain to run its save off vcpu0.

    4 - Within the stop_machine state, it pins any unpinned pgds (under
    construction or destruction), performs canonicalizes various other
    pieces of state (mostly converting mfns to pfns), and finally

    5 - Suspend the domain

    Restore reverses the steps used to save the domain, ending when all
    the frozen processes are thawed.

    Signed-off-by: Jeremy Fitzhardinge
    Signed-off-by: Thomas Gleixner

    Jeremy Fitzhardinge
     
  • ec9b2065d   xen: Move manage.c to drivers/xen for ia64/xen support ... Browse Code »

    move arch/x86/xen/manage.c under drivers/xen/to share codes
    with x86 and ia64.
    ia64/xen also uses manage.c

    Signed-off-by: Isaku Yamahata
    Signed-off-by: Jeremy Fitzhardinge
    Signed-off-by: Thomas Gleixner

    Isaku Yamahata