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Power management fixes for v4.8-rc5

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- Fix the definition of the cpufreq-dt driver's machines table
    introduced during the 4.7 cycle that should be NULL-terminated,
    but the termination entry is missing from it (Wei Yongjun).
 
  - Annotate tracepoints in the runtime PM framework's core so as to
    allow the functions containing them to be called from the idle
    code path without causing RCU to complain about illegal usage
    (Paul McKenney).
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Merge tag 'pm-4.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael Wysocki:
 "This includes a stable-candidate cpufreq-dt driver problem fix and
  annotations of tracepoints in the runtime PM framework.

  Specifics:

   - Fix the definition of the cpufreq-dt driver's machines table
     introduced during the 4.7 cycle that should be NULL-terminated, but
     the termination entry is missing from it (Wei Yongjun).

   - Annotate tracepoints in the runtime PM framework's core so as to
     allow the functions containing them to be called from the idle code
     path without causing RCU to complain about illegal usage (Paul
     McKenney)"

* tag 'pm-4.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PM / runtime: Add _rcuidle suffix to allow rpm_idle() use from idle
  PM / runtime: Add _rcuidle suffix to allow rpm_resume() to be called from idle
  cpufreq: dt: Add terminate entry for of_device_id tables
This commit is contained in:
Linus Torvalds 2016-09-02 15:07:41 -07:00
parent 15301a5707 b654c62e77
commit 9a0bcc8fe7
2 changed files with 7 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
drivers/base/power/runtime.c
View file

@ -301,7 +301,7 @@ static int rpm_idle(struct device *dev, int rpmflags)
int (*callback)(struct device *);
int retval;
trace_rpm_idle(dev, rpmflags);
trace_rpm_idle_rcuidle(dev, rpmflags);
retval = rpm_check_suspend_allowed(dev);
if (retval < 0)
; /* Conditions are wrong. */
@ -337,7 +337,7 @@ static int rpm_idle(struct device *dev, int rpmflags)
dev->power.request_pending = true;
queue_work(pm_wq, &dev->power.work);
}
trace_rpm_return_int(dev, _THIS_IP_, 0);
trace_rpm_return_int_rcuidle(dev, _THIS_IP_, 0);
return 0;
}
@ -352,7 +352,7 @@ static int rpm_idle(struct device *dev, int rpmflags)
wake_up_all(&dev->power.wait_queue);
out:
trace_rpm_return_int(dev, _THIS_IP_, retval);
trace_rpm_return_int_rcuidle(dev, _THIS_IP_, retval);
return retval ? retval : rpm_suspend(dev, rpmflags | RPM_AUTO);
}
@ -601,7 +601,7 @@ static int rpm_resume(struct device *dev, int rpmflags)
struct device *parent = NULL;
int retval = 0;
trace_rpm_resume(dev, rpmflags);
trace_rpm_resume_rcuidle(dev, rpmflags);
repeat:
if (dev->power.runtime_error)
@ -764,7 +764,7 @@ static int rpm_resume(struct device *dev, int rpmflags)
spin_lock_irq(&dev->power.lock);
}
trace_rpm_return_int(dev, _THIS_IP_, retval);
trace_rpm_return_int_rcuidle(dev, _THIS_IP_, retval);
return retval;
}

2
drivers/cpufreq/cpufreq-dt-platdev.c
View file

@ -74,6 +74,8 @@ static const struct of_device_id machines[] __initconst = {
{ .compatible = "ti,omap5", },
{ .compatible = "xlnx,zynq-7000", },
{ }
};
static int __init cpufreq_dt_platdev_init(void)