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authorLinus Torvalds <torvalds@linux-foundation.org>2014-06-12 13:14:19 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-06-12 13:14:19 -0700
commit19c1940feab777bb037c665a09f495d08a6c4e6c (patch)
tree68d4de31f30c9d69a1f1ea080b8a69ce61e1ead5 /drivers/base
parent7c574cf6aeb75920ba4d3af937bb1b3c42785ac4 (diff)
parentd715a226b0b3dae48865d05e8c36175a8f75a809 (diff)
Merge tag 'pm+acpi-3.16-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 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
Diffstat (limited to 'drivers/base')
-rw-r--r--drivers/base/power/main.c30
-rw-r--r--drivers/base/syscore.c5
2 files changed, 31 insertions, 4 deletions
diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c
index 343ffad59377..bf412961a934 100644
--- a/drivers/base/power/main.c
+++ b/drivers/base/power/main.c
@@ -214,9 +214,6 @@ static void initcall_debug_report(struct device *dev, ktime_t calltime,
pr_info("call %s+ returned %d after %Ld usecs\n", dev_name(dev),
error, (unsigned long long)nsecs >> 10);
}
-
- trace_device_pm_report_time(dev, info, nsecs, pm_verb(state.event),
- error);
}
/**
@@ -387,7 +384,9 @@ static int dpm_run_callback(pm_callback_t cb, struct device *dev,
calltime = initcall_debug_start(dev);
pm_dev_dbg(dev, state, info);
+ trace_device_pm_callback_start(dev, info, state.event);
error = cb(dev);
+ trace_device_pm_callback_end(dev, error);
suspend_report_result(cb, error);
initcall_debug_report(dev, calltime, error, state, info);
@@ -545,6 +544,7 @@ static void dpm_resume_noirq(pm_message_t state)
struct device *dev;
ktime_t starttime = ktime_get();
+ trace_suspend_resume(TPS("dpm_resume_noirq"), state.event, true);
mutex_lock(&dpm_list_mtx);
pm_transition = state;
@@ -587,6 +587,7 @@ static void dpm_resume_noirq(pm_message_t state)
dpm_show_time(starttime, state, "noirq");
resume_device_irqs();
cpuidle_resume();
+ trace_suspend_resume(TPS("dpm_resume_noirq"), state.event, false);
}
/**
@@ -664,6 +665,7 @@ static void dpm_resume_early(pm_message_t state)
struct device *dev;
ktime_t starttime = ktime_get();
+ trace_suspend_resume(TPS("dpm_resume_early"), state.event, true);
mutex_lock(&dpm_list_mtx);
pm_transition = state;
@@ -703,6 +705,7 @@ static void dpm_resume_early(pm_message_t state)
mutex_unlock(&dpm_list_mtx);
async_synchronize_full();
dpm_show_time(starttime, state, "early");
+ trace_suspend_resume(TPS("dpm_resume_early"), state.event, false);
}
/**
@@ -834,6 +837,7 @@ void dpm_resume(pm_message_t state)
struct device *dev;
ktime_t starttime = ktime_get();
+ trace_suspend_resume(TPS("dpm_resume"), state.event, true);
might_sleep();
mutex_lock(&dpm_list_mtx);
@@ -875,6 +879,7 @@ void dpm_resume(pm_message_t state)
dpm_show_time(starttime, state, NULL);
cpufreq_resume();
+ trace_suspend_resume(TPS("dpm_resume"), state.event, false);
}
/**
@@ -913,7 +918,9 @@ static void device_complete(struct device *dev, pm_message_t state)
if (callback) {
pm_dev_dbg(dev, state, info);
+ trace_device_pm_callback_start(dev, info, state.event);
callback(dev);
+ trace_device_pm_callback_end(dev, 0);
}
device_unlock(dev);
@@ -932,6 +939,7 @@ void dpm_complete(pm_message_t state)
{
struct list_head list;
+ trace_suspend_resume(TPS("dpm_complete"), state.event, true);
might_sleep();
INIT_LIST_HEAD(&list);
@@ -951,6 +959,7 @@ void dpm_complete(pm_message_t state)
}
list_splice(&list, &dpm_list);
mutex_unlock(&dpm_list_mtx);
+ trace_suspend_resume(TPS("dpm_complete"), state.event, false);
}
/**
@@ -1086,6 +1095,7 @@ static int dpm_suspend_noirq(pm_message_t state)
ktime_t starttime = ktime_get();
int error = 0;
+ trace_suspend_resume(TPS("dpm_suspend_noirq"), state.event, true);
cpuidle_pause();
suspend_device_irqs();
mutex_lock(&dpm_list_mtx);
@@ -1126,6 +1136,7 @@ static int dpm_suspend_noirq(pm_message_t state)
} else {
dpm_show_time(starttime, state, "noirq");
}
+ trace_suspend_resume(TPS("dpm_suspend_noirq"), state.event, false);
return error;
}
@@ -1222,6 +1233,7 @@ static int dpm_suspend_late(pm_message_t state)
ktime_t starttime = ktime_get();
int error = 0;
+ trace_suspend_resume(TPS("dpm_suspend_late"), state.event, true);
mutex_lock(&dpm_list_mtx);
pm_transition = state;
async_error = 0;
@@ -1257,6 +1269,7 @@ static int dpm_suspend_late(pm_message_t state)
} else {
dpm_show_time(starttime, state, "late");
}
+ trace_suspend_resume(TPS("dpm_suspend_late"), state.event, false);
return error;
}
@@ -1295,7 +1308,9 @@ static int legacy_suspend(struct device *dev, pm_message_t state,
calltime = initcall_debug_start(dev);
+ trace_device_pm_callback_start(dev, info, state.event);
error = cb(dev, state);
+ trace_device_pm_callback_end(dev, error);
suspend_report_result(cb, error);
initcall_debug_report(dev, calltime, error, state, info);
@@ -1461,6 +1476,7 @@ int dpm_suspend(pm_message_t state)
ktime_t starttime = ktime_get();
int error = 0;
+ trace_suspend_resume(TPS("dpm_suspend"), state.event, true);
might_sleep();
cpufreq_suspend();
@@ -1498,6 +1514,7 @@ int dpm_suspend(pm_message_t state)
dpm_save_failed_step(SUSPEND_SUSPEND);
} else
dpm_show_time(starttime, state, NULL);
+ trace_suspend_resume(TPS("dpm_suspend"), state.event, false);
return error;
}
@@ -1549,8 +1566,11 @@ static int device_prepare(struct device *dev, pm_message_t state)
callback = dev->driver->pm->prepare;
}
- if (callback)
+ if (callback) {
+ trace_device_pm_callback_start(dev, info, state.event);
ret = callback(dev);
+ trace_device_pm_callback_end(dev, ret);
+ }
device_unlock(dev);
@@ -1582,6 +1602,7 @@ int dpm_prepare(pm_message_t state)
{
int error = 0;
+ trace_suspend_resume(TPS("dpm_prepare"), state.event, true);
might_sleep();
mutex_lock(&dpm_list_mtx);
@@ -1612,6 +1633,7 @@ int dpm_prepare(pm_message_t state)
put_device(dev);
}
mutex_unlock(&dpm_list_mtx);
+ trace_suspend_resume(TPS("dpm_prepare"), state.event, false);
return error;
}
diff --git a/drivers/base/syscore.c b/drivers/base/syscore.c
index e8d11b6630ee..dbb8350ea8dc 100644
--- a/drivers/base/syscore.c
+++ b/drivers/base/syscore.c
@@ -10,6 +10,7 @@
#include <linux/mutex.h>
#include <linux/module.h>
#include <linux/interrupt.h>
+#include <trace/events/power.h>
static LIST_HEAD(syscore_ops_list);
static DEFINE_MUTEX(syscore_ops_lock);
@@ -49,6 +50,7 @@ int syscore_suspend(void)
struct syscore_ops *ops;
int ret = 0;
+ trace_suspend_resume(TPS("syscore_suspend"), 0, true);
pr_debug("Checking wakeup interrupts\n");
/* Return error code if there are any wakeup interrupts pending. */
@@ -70,6 +72,7 @@ int syscore_suspend(void)
"Interrupts enabled after %pF\n", ops->suspend);
}
+ trace_suspend_resume(TPS("syscore_suspend"), 0, false);
return 0;
err_out:
@@ -92,6 +95,7 @@ void syscore_resume(void)
{
struct syscore_ops *ops;
+ trace_suspend_resume(TPS("syscore_resume"), 0, true);
WARN_ONCE(!irqs_disabled(),
"Interrupts enabled before system core resume.\n");
@@ -103,6 +107,7 @@ void syscore_resume(void)
WARN_ONCE(!irqs_disabled(),
"Interrupts enabled after %pF\n", ops->resume);
}
+ trace_suspend_resume(TPS("syscore_resume"), 0, false);
}
EXPORT_SYMBOL_GPL(syscore_resume);
#endif /* CONFIG_PM_SLEEP */