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Merge tag 'pm+acpi-3.16-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

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Pull more ACPI and power management updates from Rafael Wysocki:
 "These are fixups on top of the previous PM+ACPI pull request,
  regression fixes (ACPI hotplug, cpufreq ppc-corenet), other bug fixes
  (ACPI reset, cpufreq), new PM trace points for system suspend
  profiling and a copyright notice update.

  Specifics:

   - I didn't remember correctly that the Hans de Goede's ACPI video
     patches actually didn't flip the video.use_native_backlight
     default, although we had discussed that and decided to do that.
     Since I said we would do that in the previous PM+ACPI pull request,
     make that change for real now.

   - ACPI bus check notifications for PCI host bridges don't cause the
     bus below the host bridge to be checked for changes as they should
     because of a mistake in the ACPI-based PCI hotplug (ACPIPHP)
     subsystem that forgets to add hotplug contexts to PCI host bridge
     ACPI device objects.  Create hotplug contexts for PCI host bridges
     too as appropriate.

   - Revert recent cpufreq commit related to the big.LITTLE cpufreq
     driver that breaks arm64 builds.

   - Fix for a regression in the ppc-corenet cpufreq driver introduced
     during the 3.15 cycle and causing the driver to use the remainder
     from do_div instead of the quotient.  From Ed Swarthout.

   - Resets triggered by panic activate a BUG_ON() in vmalloc.c on
     systems where the ACPI reset register is located in memory address
     space.  Fix from Randy Wright.

   - Fix for a problem with cpufreq governors that decisions made by
     them may be suboptimal due to the fact that deferrable timers are
     used by them for CPU load sampling.  From Srivatsa S Bhat.

   - Fix for a problem with the Tegra cpufreq driver where the CPU
     frequency is temporarily switched to a "stable" level that is
     different from both the initial and target frequencies during
     transitions which causes udelay() to expire earlier than it should
     sometimes.  From Viresh Kumar.

   - New trace points and rework of some existing trace points for
     system suspend/resume profiling from Todd Brandt.

   - Assorted cpufreq fixes and cleanups from Stratos Karafotis and
     Viresh Kumar.

   - Copyright notice update for suspend-and-cpuhotplug.txt from
     Srivatsa S Bhat"

* tag 'pm+acpi-3.16-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI / hotplug / PCI: Add hotplug contexts to PCI host bridges
  PM / sleep: trace events for device PM callbacks
  cpufreq: cpufreq-cpu0: remove dependency on THERMAL and REGULATOR
  cpufreq: tegra: update comment for clarity
  cpufreq: intel_pstate: Remove duplicate CPU ID check
  cpufreq: Mark CPU0 driver with CPUFREQ_NEED_INITIAL_FREQ_CHECK flag
  PM / Documentation: Update copyright in suspend-and-cpuhotplug.txt
  cpufreq: governor: remove copy_prev_load from 'struct cpu_dbs_common_info'
  cpufreq: governor: Be friendly towards latency-sensitive bursty workloads
  PM / sleep: trace events for suspend/resume
  cpufreq: ppc-corenet-cpu-freq: do_div use quotient
  Revert "cpufreq: Enable big.LITTLE cpufreq driver on arm64"
  cpufreq: Tegra: implement intermediate frequency callbacks
  cpufreq: add support for intermediate (stable) frequencies
  ACPI / video: Change the default for video.use_native_backlight to 1
  ACPI: Fix bug when ACPI reset register is implemented in system memory
This commit is contained in:
Linus Torvalds
2014-06-12 13:14:19 -07:00
parent 7c574cf6ae d715a226b0
commit 19c1940fea
24 changed files with 446 additions and 122 deletions
Download Patch File Download Diff File Expand all files Collapse all files

102
include/trace/events/power.h
View File

@@ -7,6 +7,9 @@
#include <linux/ktime.h>
#include <linux/pm_qos.h>
#include <linux/tracepoint.h>
#include <linux/ftrace_event.h>
#define TPS(x) tracepoint_string(x)
DECLARE_EVENT_CLASS(cpu,
@@ -90,6 +93,17 @@ TRACE_EVENT(pstate_sample,
#define PWR_EVENT_EXIT -1
#endif
#define pm_verb_symbolic(event) \
__print_symbolic(event, \
{ PM_EVENT_SUSPEND, "suspend" }, \
{ PM_EVENT_RESUME, "resume" }, \
{ PM_EVENT_FREEZE, "freeze" }, \
{ PM_EVENT_QUIESCE, "quiesce" }, \
{ PM_EVENT_HIBERNATE, "hibernate" }, \
{ PM_EVENT_THAW, "thaw" }, \
{ PM_EVENT_RESTORE, "restore" }, \
{ PM_EVENT_RECOVER, "recover" })
DEFINE_EVENT(cpu, cpu_frequency,
TP_PROTO(unsigned int frequency, unsigned int cpu_id),
@@ -97,58 +111,76 @@ DEFINE_EVENT(cpu, cpu_frequency,
TP_ARGS(frequency, cpu_id)
);
TRACE_EVENT(machine_suspend,
TRACE_EVENT(device_pm_callback_start,
TP_PROTO(unsigned int state),
TP_PROTO(struct device *dev, const char *pm_ops, int event),
TP_ARGS(state),
TP_STRUCT__entry(
__field( u32, state )
),
TP_fast_assign(
__entry->state = state;
),
TP_printk("state=%lu", (unsigned long)__entry->state)
);
TRACE_EVENT(device_pm_report_time,
TP_PROTO(struct device *dev, const char *pm_ops, s64 ops_time,
char *pm_event_str, int error),
TP_ARGS(dev, pm_ops, ops_time, pm_event_str, error),
TP_ARGS(dev, pm_ops, event),
TP_STRUCT__entry(
__string(device, dev_name(dev))
__string(driver, dev_driver_string(dev))
__string(parent, dev->parent ? dev_name(dev->parent) : "none")
__string(pm_ops, pm_ops ? pm_ops : "none ")
__string(pm_event_str, pm_event_str)
__field(s64, ops_time)
__field(int, event)
),
TP_fast_assign(
__assign_str(device, dev_name(dev));
__assign_str(driver, dev_driver_string(dev));
__assign_str(parent,
dev->parent ? dev_name(dev->parent) : "none");
__assign_str(pm_ops, pm_ops ? pm_ops : "none ");
__entry->event = event;
),
TP_printk("%s %s, parent: %s, %s[%s]", __get_str(driver),
__get_str(device), __get_str(parent), __get_str(pm_ops),
pm_verb_symbolic(__entry->event))
);
TRACE_EVENT(device_pm_callback_end,
TP_PROTO(struct device *dev, int error),
TP_ARGS(dev, error),
TP_STRUCT__entry(
__string(device, dev_name(dev))
__string(driver, dev_driver_string(dev))
__field(int, error)
),
TP_fast_assign(
const char *tmp = dev->parent ? dev_name(dev->parent) : "none";
const char *tmp_i = pm_ops ? pm_ops : "none ";
__assign_str(device, dev_name(dev));
__assign_str(driver, dev_driver_string(dev));
__assign_str(parent, tmp);
__assign_str(pm_ops, tmp_i);
__assign_str(pm_event_str, pm_event_str);
__entry->ops_time = ops_time;
__entry->error = error;
),
/* ops_str has an extra space at the end */
TP_printk("%s %s parent=%s state=%s ops=%snsecs=%lld err=%d",
__get_str(driver), __get_str(device), __get_str(parent),
__get_str(pm_event_str), __get_str(pm_ops),
__entry->ops_time, __entry->error)
TP_printk("%s %s, err=%d",
__get_str(driver), __get_str(device), __entry->error)
);
TRACE_EVENT(suspend_resume,
TP_PROTO(const char *action, int val, bool start),
TP_ARGS(action, val, start),
TP_STRUCT__entry(
__field(const char *, action)
__field(int, val)
__field(bool, start)
),
TP_fast_assign(
__entry->action = action;
__entry->val = val;
__entry->start = start;
),
TP_printk("%s[%u] %s", __entry->action, (unsigned int)__entry->val,
(__entry->start)?"begin":"end")
);
DECLARE_EVENT_CLASS(wakeup_source,