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author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-12-04 21:48:09 +0300 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-12-04 21:48:09 +0300 |
commit | ef867c12f31dec4a03be5678d70893f97dc76ea7 (patch) | |
tree | 667bd3c90fdec0024a56e542240f4ace61f01d68 /include | |
parent | 63de37476ebd1e9bab6a9e17186dc5aa1da9ea99 (diff) | |
parent | 1e4230f56dac141eb149ebec01f41b6fad27e503 (diff) | |
download | linux-ef867c12f31dec4a03be5678d70893f97dc76ea7.tar.xz |
Merge tag 'pm-5.5-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull additional power management updates from Rafael Wysocki:
"These fix an ACPI EC driver bug exposed by the recent rework of the
suspend-to-idle code flow, reintroduce frequency constraints into
device PM QoS (in preparation for adding QoS support to devfreq), drop
a redundant field from struct cpuidle_state and clean up Kconfig in
some places.
Specifics:
- Avoid a race condition in the ACPI EC driver that may cause systems
to be unable to leave suspend-to-idle (Rafael Wysocki)
- Drop the "disabled" field, which is redundant, from struct
cpuidle_state (Rafael Wysocki)
- Reintroduce device PM QoS frequency constraints (temporarily
introduced and than dropped during the 5.4 cycle) in preparation
for adding QoS support to devfreq (Leonard Crestez)
- Clean up indentation (in multiple places) and the cpuidle drivers
help text in Kconfig (Krzysztof Kozlowski, Randy Dunlap)"
* tag 'pm-5.5-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: PM: s2idle: Rework ACPI events synchronization
ACPI: EC: Rework flushing of pending work
PM / devfreq: Add missing locking while setting suspend_freq
PM / QoS: Restore DEV_PM_QOS_MIN/MAX_FREQUENCY
PM / QoS: Reorder pm_qos/freq_qos/dev_pm_qos structs
PM / QoS: Initial kunit test
PM / QoS: Redefine FREQ_QOS_MAX_DEFAULT_VALUE to S32_MAX
power: avs: Fix Kconfig indentation
cpufreq: Fix Kconfig indentation
cpuidle: minor Kconfig help text fixes
cpuidle: Drop disabled field from struct cpuidle_state
cpuidle: Fix Kconfig indentation
Diffstat (limited to 'include')
-rw-r--r-- | include/linux/cpuidle.h | 2 | ||||
-rw-r--r-- | include/linux/pm_qos.h | 86 |
2 files changed, 51 insertions, 37 deletions
diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h index 2dbe46b7c213..1dabe36bd011 100644 --- a/include/linux/cpuidle.h +++ b/include/linux/cpuidle.h @@ -54,7 +54,6 @@ struct cpuidle_state { unsigned int exit_latency; /* in US */ int power_usage; /* in mW */ unsigned int target_residency; /* in US */ - bool disabled; /* disabled on all CPUs */ int (*enter) (struct cpuidle_device *dev, struct cpuidle_driver *drv, @@ -77,6 +76,7 @@ struct cpuidle_state { #define CPUIDLE_FLAG_POLLING BIT(0) /* polling state */ #define CPUIDLE_FLAG_COUPLED BIT(1) /* state applies to multiple cpus */ #define CPUIDLE_FLAG_TIMER_STOP BIT(2) /* timer is stopped on this state */ +#define CPUIDLE_FLAG_UNUSABLE BIT(3) /* avoid using this state */ struct cpuidle_device_kobj; struct cpuidle_state_kobj; diff --git a/include/linux/pm_qos.h b/include/linux/pm_qos.h index ebf5ef17cc2a..19eafca5680e 100644 --- a/include/linux/pm_qos.h +++ b/include/linux/pm_qos.h @@ -34,6 +34,8 @@ enum pm_qos_flags_status { #define PM_QOS_RESUME_LATENCY_NO_CONSTRAINT PM_QOS_LATENCY_ANY #define PM_QOS_RESUME_LATENCY_NO_CONSTRAINT_NS PM_QOS_LATENCY_ANY_NS #define PM_QOS_LATENCY_TOLERANCE_DEFAULT_VALUE 0 +#define PM_QOS_MIN_FREQUENCY_DEFAULT_VALUE 0 +#define PM_QOS_MAX_FREQUENCY_DEFAULT_VALUE FREQ_QOS_MAX_DEFAULT_VALUE #define PM_QOS_LATENCY_TOLERANCE_NO_CONSTRAINT (-1) #define PM_QOS_FLAG_NO_POWER_OFF (1 << 0) @@ -49,21 +51,6 @@ struct pm_qos_flags_request { s32 flags; /* Do not change to 64 bit */ }; -enum dev_pm_qos_req_type { - DEV_PM_QOS_RESUME_LATENCY = 1, - DEV_PM_QOS_LATENCY_TOLERANCE, - DEV_PM_QOS_FLAGS, -}; - -struct dev_pm_qos_request { - enum dev_pm_qos_req_type type; - union { - struct plist_node pnode; - struct pm_qos_flags_request flr; - } data; - struct device *dev; -}; - enum pm_qos_type { PM_QOS_UNITIALIZED, PM_QOS_MAX, /* return the largest value */ @@ -90,9 +77,51 @@ struct pm_qos_flags { s32 effective_flags; /* Do not change to 64 bit */ }; + +#define FREQ_QOS_MIN_DEFAULT_VALUE 0 +#define FREQ_QOS_MAX_DEFAULT_VALUE S32_MAX + +enum freq_qos_req_type { + FREQ_QOS_MIN = 1, + FREQ_QOS_MAX, +}; + +struct freq_constraints { + struct pm_qos_constraints min_freq; + struct blocking_notifier_head min_freq_notifiers; + struct pm_qos_constraints max_freq; + struct blocking_notifier_head max_freq_notifiers; +}; + +struct freq_qos_request { + enum freq_qos_req_type type; + struct plist_node pnode; + struct freq_constraints *qos; +}; + + +enum dev_pm_qos_req_type { + DEV_PM_QOS_RESUME_LATENCY = 1, + DEV_PM_QOS_LATENCY_TOLERANCE, + DEV_PM_QOS_MIN_FREQUENCY, + DEV_PM_QOS_MAX_FREQUENCY, + DEV_PM_QOS_FLAGS, +}; + +struct dev_pm_qos_request { + enum dev_pm_qos_req_type type; + union { + struct plist_node pnode; + struct pm_qos_flags_request flr; + struct freq_qos_request freq; + } data; + struct device *dev; +}; + struct dev_pm_qos { struct pm_qos_constraints resume_latency; struct pm_qos_constraints latency_tolerance; + struct freq_constraints freq; struct pm_qos_flags flags; struct dev_pm_qos_request *resume_latency_req; struct dev_pm_qos_request *latency_tolerance_req; @@ -191,6 +220,10 @@ static inline s32 dev_pm_qos_read_value(struct device *dev, switch (type) { case DEV_PM_QOS_RESUME_LATENCY: return PM_QOS_RESUME_LATENCY_NO_CONSTRAINT; + case DEV_PM_QOS_MIN_FREQUENCY: + return PM_QOS_MIN_FREQUENCY_DEFAULT_VALUE; + case DEV_PM_QOS_MAX_FREQUENCY: + return PM_QOS_MAX_FREQUENCY_DEFAULT_VALUE; default: WARN_ON(1); return 0; @@ -255,27 +288,6 @@ static inline s32 dev_pm_qos_raw_resume_latency(struct device *dev) } #endif -#define FREQ_QOS_MIN_DEFAULT_VALUE 0 -#define FREQ_QOS_MAX_DEFAULT_VALUE (-1) - -enum freq_qos_req_type { - FREQ_QOS_MIN = 1, - FREQ_QOS_MAX, -}; - -struct freq_constraints { - struct pm_qos_constraints min_freq; - struct blocking_notifier_head min_freq_notifiers; - struct pm_qos_constraints max_freq; - struct blocking_notifier_head max_freq_notifiers; -}; - -struct freq_qos_request { - enum freq_qos_req_type type; - struct plist_node pnode; - struct freq_constraints *qos; -}; - static inline int freq_qos_request_active(struct freq_qos_request *req) { return !IS_ERR_OR_NULL(req->qos); @@ -291,6 +303,8 @@ int freq_qos_add_request(struct freq_constraints *qos, enum freq_qos_req_type type, s32 value); int freq_qos_update_request(struct freq_qos_request *req, s32 new_value); int freq_qos_remove_request(struct freq_qos_request *req); +int freq_qos_apply(struct freq_qos_request *req, + enum pm_qos_req_action action, s32 value); int freq_qos_add_notifier(struct freq_constraints *qos, enum freq_qos_req_type type, |