diff options
| author | Fabio Estevam <festevam@denx.de> | 2023-11-29 09:43:28 -0300 |
|---|---|---|
| committer | Daniel Lezcano <daniel.lezcano@linaro.org> | 2024-01-02 09:33:18 +0100 |
| commit | 5a0e241003b80247de59727c945bc94c848f893d (patch) | |
| tree | ecb2477225fcd0b6933960a01b9426801ab5adf0 | |
| parent | 87f67d1747bc3ce8ace14be99b47d7731041ff03 (diff) | |
thermal/core: Prepare for introduction of thermal reboot
Add some helper functions to make it easier introducing the support
for thermal reboot.
No functional change.
Signed-off-by: Fabio Estevam <festevam@denx.de>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20231129124330.519423-2-festevam@gmail.com
| -rw-r--r-- | drivers/thermal/thermal_core.c | 14 | ||||
| -rw-r--r-- | include/linux/reboot.h | 7 | ||||
| -rw-r--r-- | kernel/reboot.c | 8 |
3 files changed, 20 insertions, 9 deletions
diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c index 5e5fcbd81dda..859f62e9d779 100644 --- a/drivers/thermal/thermal_core.c +++ b/drivers/thermal/thermal_core.c @@ -311,18 +311,24 @@ static void handle_non_critical_trips(struct thermal_zone_device *tz, def_governor->throttle(tz, trip); } -void thermal_zone_device_critical(struct thermal_zone_device *tz) +static void thermal_zone_device_halt(struct thermal_zone_device *tz, bool shutdown) { /* * poweroff_delay_ms must be a carefully profiled positive value. * Its a must for forced_emergency_poweroff_work to be scheduled. */ int poweroff_delay_ms = CONFIG_THERMAL_EMERGENCY_POWEROFF_DELAY_MS; + const char *msg = "Temperature too high"; + + dev_emerg(&tz->device, "%s: critical temperature reached\n", tz->type); - dev_emerg(&tz->device, "%s: critical temperature reached, " - "shutting down\n", tz->type); + if (shutdown) + hw_protection_shutdown(msg, poweroff_delay_ms); +} - hw_protection_shutdown("Temperature too high", poweroff_delay_ms); +void thermal_zone_device_critical(struct thermal_zone_device *tz) +{ + thermal_zone_device_halt(tz, true); } EXPORT_SYMBOL(thermal_zone_device_critical); diff --git a/include/linux/reboot.h b/include/linux/reboot.h index c4cc3b89ced1..4586c663884e 100644 --- a/include/linux/reboot.h +++ b/include/linux/reboot.h @@ -177,7 +177,12 @@ void ctrl_alt_del(void); extern void orderly_poweroff(bool force); extern void orderly_reboot(void); -void hw_protection_shutdown(const char *reason, int ms_until_forced); +void __hw_protection_shutdown(const char *reason, int ms_until_forced, bool shutdown); + +static inline void hw_protection_shutdown(const char *reason, int ms_until_forced) +{ + __hw_protection_shutdown(reason, ms_until_forced, true); +} /* * Emergency restart, callable from an interrupt handler. diff --git a/kernel/reboot.c b/kernel/reboot.c index 395a0ea3c7a8..b236c4c06bb3 100644 --- a/kernel/reboot.c +++ b/kernel/reboot.c @@ -957,7 +957,7 @@ static void hw_failure_emergency_poweroff(int poweroff_delay_ms) } /** - * hw_protection_shutdown - Trigger an emergency system poweroff + * __hw_protection_shutdown - Trigger an emergency system poweroff * * @reason: Reason of emergency shutdown to be printed. * @ms_until_forced: Time to wait for orderly shutdown before tiggering a @@ -971,7 +971,7 @@ static void hw_failure_emergency_poweroff(int poweroff_delay_ms) * if the previous request has given a large timeout for forced shutdown. * Can be called from any context. */ -void hw_protection_shutdown(const char *reason, int ms_until_forced) +void __hw_protection_shutdown(const char *reason, int ms_until_forced, bool shutdown) { static atomic_t allow_proceed = ATOMIC_INIT(1); @@ -986,9 +986,9 @@ void hw_protection_shutdown(const char *reason, int ms_until_forced) * orderly_poweroff failure */ hw_failure_emergency_poweroff(ms_until_forced); - orderly_poweroff(true); + if (shutdown) + orderly_poweroff(true); } -EXPORT_SYMBOL_GPL(hw_protection_shutdown); static int __init reboot_setup(char *str) { |