diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/cpu.h | 4 | ||||
| -rw-r--r-- | include/linux/suspend.h | 31 |
2 files changed, 35 insertions, 0 deletions
diff --git a/include/linux/cpu.h b/include/linux/cpu.h index 3813fe45effd..fcb1386bb0d4 100644 --- a/include/linux/cpu.h +++ b/include/linux/cpu.h @@ -201,10 +201,14 @@ enum cpuhp_smt_control { extern enum cpuhp_smt_control cpu_smt_control; extern void cpu_smt_disable(bool force); extern void cpu_smt_check_topology(void); +extern int cpuhp_smt_enable(void); +extern int cpuhp_smt_disable(enum cpuhp_smt_control ctrlval); #else # define cpu_smt_control (CPU_SMT_NOT_IMPLEMENTED) static inline void cpu_smt_disable(bool force) { } static inline void cpu_smt_check_topology(void) { } +static inline int cpuhp_smt_enable(void) { return 0; } +static inline int cpuhp_smt_disable(enum cpuhp_smt_control ctrlval) { return 0; } #endif /* diff --git a/include/linux/suspend.h b/include/linux/suspend.h index 4a2ffd678887..8594001e8be8 100644 --- a/include/linux/suspend.h +++ b/include/linux/suspend.h @@ -227,11 +227,42 @@ static inline void pm_set_resume_via_firmware(void) pm_suspend_global_flags |= PM_SUSPEND_FLAG_FW_RESUME; } +/** + * pm_suspend_via_firmware - Check if platform firmware will suspend the system. + * + * To be called during system-wide power management transitions to sleep states + * or during the subsequent system-wide transitions back to the working state. + * + * Return 'true' if the platform firmware is going to be invoked at the end of + * the system-wide power management transition (to a sleep state) in progress in + * order to complete it, or if the platform firmware has been invoked in order + * to complete the last (or preceding) transition of the system to a sleep + * state. + * + * This matters if the caller needs or wants to carry out some special actions + * depending on whether or not control will be passed to the platform firmware + * subsequently (for example, the device may need to be reset before letting the + * platform firmware manipulate it, which is not necessary when the platform + * firmware is not going to be invoked) or when such special actions may have + * been carried out during the preceding transition of the system to a sleep + * state (as they may need to be taken into account). + */ static inline bool pm_suspend_via_firmware(void) { return !!(pm_suspend_global_flags & PM_SUSPEND_FLAG_FW_SUSPEND); } +/** + * pm_resume_via_firmware - Check if platform firmware has woken up the system. + * + * To be called during system-wide power management transitions from sleep + * states. + * + * Return 'true' if the platform firmware has passed control to the kernel at + * the beginning of the system-wide power management transition in progress, so + * the event that woke up the system from sleep has been handled by the platform + * firmware. + */ static inline bool pm_resume_via_firmware(void) { return !!(pm_suspend_global_flags & PM_SUSPEND_FLAG_FW_RESUME); |