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More ACPI and power management updates for 3.17-rc1

Browse source 
- Fix for an ACPI-based device hotplug regression introduced in 3.14
    that causes a kernel panic to trigger when memory hot-remove is
    attempted with CONFIG_ACPI_HOTPLUG_MEMORY unset from Tang Chen.
 
  - Fix for a cpufreq regression introduced in 3.16 that triggers a
    "sleeping function called from invalid context" bug in
    dev_pm_opp_init_cpufreq_table() from Stephen Boyd.
 
  - ACPI battery driver fix for a warning message added in 3.16 that
    prints silly stuff sometimes from Mariusz Ceier.
 
  - Hibernation fix for safer handling of mismatches in the 820 memory
    map between the configurations during image creation and during
    the subsequent restore from Chun-Yi Lee.
 
  - ACPI processor driver fix to handle CPU hotplug notifications
    correctly during system suspend/resume from Lan Tianyu.
 
  - Series of four cpuidle menu governor cleanups that also should
    speed it up a bit from Mel Gorman.
 
  - Fixes for the speedstep-smi, integrator, cpu0 and arm_big_little
    cpufreq drivers from Hans Wennborg, Himangi Saraogi, Markus Pargmann
    and Uwe Kleine-König.
 
  - Version 3.0 of the analyze_suspend.py suspend profiling tool
    from Todd E Brandt.
 
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Merge tag 'pm+acpi-3.17-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull more ACPI and power management updates from Rafael Wysocki:
 "These are a couple of regression fixes, cpuidle menu governor
  optimizations, fixes for ACPI proccessor and battery drivers,
  hibernation fix to avoid problems related to the e820 memory map,
  fixes for a few cpufreq drivers and a new version of the suspend
  profiling tool analyze_suspend.py.

  Specifics:

   - Fix for an ACPI-based device hotplug regression introduced in 3.14
     that causes a kernel panic to trigger when memory hot-remove is
     attempted with CONFIG_ACPI_HOTPLUG_MEMORY unset from Tang Chen

   - Fix for a cpufreq regression introduced in 3.16 that triggers a
     "sleeping function called from invalid context" bug in
     dev_pm_opp_init_cpufreq_table() from Stephen Boyd

   - ACPI battery driver fix for a warning message added in 3.16 that
     prints silly stuff sometimes from Mariusz Ceier

   - Hibernation fix for safer handling of mismatches in the 820 memory
     map between the configurations during image creation and during the
     subsequent restore from Chun-Yi Lee

   - ACPI processor driver fix to handle CPU hotplug notifications
     correctly during system suspend/resume from Lan Tianyu

   - Series of four cpuidle menu governor cleanups that also should
     speed it up a bit from Mel Gorman

   - Fixes for the speedstep-smi, integrator, cpu0 and arm_big_little
     cpufreq drivers from Hans Wennborg, Himangi Saraogi, Markus
     Pargmann and Uwe Kleine-König

   - Version 3.0 of the analyze_suspend.py suspend profiling tool from
     Todd E Brandt"

* tag 'pm+acpi-3.17-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI / battery: Fix warning message in acpi_battery_get_state()
  PM / tools: analyze_suspend.py: update to v3.0
  cpufreq: arm_big_little: fix module license spec
  cpufreq: speedstep-smi: fix decimal printf specifiers
  ACPI / hotplug: Check scan handlers in acpi_scan_hot_remove()
  cpufreq: OPP: Avoid sleeping while atomic
  cpufreq: cpu0: Do not print error message when deferring
  cpufreq: integrator: Use set_cpus_allowed_ptr
  PM / hibernate: avoid unsafe pages in e820 reserved regions
  ACPI / processor: Make acpi_cpu_soft_notify() process CPU FROZEN events
  cpuidle: menu: Lookup CPU runqueues less
  cpuidle: menu: Call nr_iowait_cpu less times
  cpuidle: menu: Use ktime_to_us instead of reinventing the wheel
  cpuidle: menu: Use shifts when calculating averages where possible
This commit is contained in:
Linus Torvalds 2014-08-14 18:13:46 -06:00
commit c9d26423e5
15 changed files with 3051 additions and 878 deletions
Download patch file Download diff file Expand all files Collapse all files

5
drivers/cpufreq/arm_big_little.c
View file

@ -24,6 +24,7 @@
#include <linux/cpufreq.h>
#include <linux/cpumask.h>
#include <linux/export.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/of_platform.h>
#include <linux/pm_opp.h>
@ -593,3 +594,7 @@ void bL_cpufreq_unregister(struct cpufreq_arm_bL_ops *ops)
arm_bL_ops = NULL;
}
EXPORT_SYMBOL_GPL(bL_cpufreq_unregister);
MODULE_AUTHOR("Viresh Kumar <[email protected]>");
MODULE_DESCRIPTION("Generic ARM big LITTLE cpufreq driver");
MODULE_LICENSE("GPL v2");

2
drivers/cpufreq/arm_big_little_dt.c
View file

@ -114,4 +114,4 @@ module_platform_driver(generic_bL_platdrv);
MODULE_AUTHOR("Viresh Kumar <[email protected]>");
MODULE_DESCRIPTION("Generic ARM big LITTLE cpufreq driver via DT");
MODULE_LICENSE("GPL");
MODULE_LICENSE("GPL v2");

2
drivers/cpufreq/cpufreq-cpu0.c
View file

@ -137,7 +137,7 @@ static int cpu0_cpufreq_probe(struct platform_device *pdev)
* not yet registered, we should try defering probe.
*/
if (PTR_ERR(cpu_reg) == -EPROBE_DEFER) {
dev_err(cpu_dev, "cpu0 regulator not ready, retry\n");
dev_dbg(cpu_dev, "cpu0 regulator not ready, retry\n");
ret = -EPROBE_DEFER;
goto out_put_node;
}

2
drivers/cpufreq/cpufreq_opp.c
View file

@ -60,7 +60,7 @@ int dev_pm_opp_init_cpufreq_table(struct device *dev,
goto out;
}
freq_table = kzalloc(sizeof(*freq_table) * (max_opps + 1), GFP_KERNEL);
freq_table = kcalloc(sizeof(*freq_table), (max_opps + 1), GFP_ATOMIC);
if (!freq_table) {
ret = -ENOMEM;
goto out;

10
drivers/cpufreq/integrator-cpufreq.c
View file

@ -92,7 +92,7 @@ static int integrator_set_target(struct cpufreq_policy *policy,
* Bind to the specified CPU. When this call returns,
* we should be running on the right CPU.
*/
set_cpus_allowed(current, cpumask_of_cpu(cpu));
set_cpus_allowed_ptr(current, cpumask_of(cpu));
BUG_ON(cpu != smp_processor_id());
/* get current setting */
@ -118,7 +118,7 @@ static int integrator_set_target(struct cpufreq_policy *policy,
freqs.new = icst_hz(&cclk_params, vco) / 1000;
if (freqs.old == freqs.new) {
set_cpus_allowed(current, cpus_allowed);
set_cpus_allowed_ptr(current, &cpus_allowed);
return 0;
}
@ -141,7 +141,7 @@ static int integrator_set_target(struct cpufreq_policy *policy,
/*
* Restore the CPUs allowed mask.
*/
set_cpus_allowed(current, cpus_allowed);
set_cpus_allowed_ptr(current, &cpus_allowed);
cpufreq_freq_transition_end(policy, &freqs, 0);
@ -157,7 +157,7 @@ static unsigned int integrator_get(unsigned int cpu)
cpus_allowed = current->cpus_allowed;
set_cpus_allowed(current, cpumask_of_cpu(cpu));
set_cpus_allowed_ptr(current, cpumask_of(cpu));
BUG_ON(cpu != smp_processor_id());
/* detect memory etc. */
@ -173,7 +173,7 @@ static unsigned int integrator_get(unsigned int cpu)
current_freq = icst_hz(&cclk_params, vco) / 1000; /* current freq */
set_cpus_allowed(current, cpus_allowed);
set_cpus_allowed_ptr(current, &cpus_allowed);
return current_freq;
}

4
drivers/cpufreq/speedstep-smi.c
View file

@ -324,8 +324,8 @@ static int __init speedstep_init(void)
return -ENODEV;
}
pr_debug("signature:0x%.8ulx, command:0x%.8ulx, "
"event:0x%.8ulx, perf_level:0x%.8ulx.\n",
pr_debug("signature:0x%.8x, command:0x%.8x, "
"event:0x%.8x, perf_level:0x%.8x.\n",
ist_info.signature, ist_info.command,
ist_info.event, ist_info.perf_level);