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| author | Fabio Estevam <festevam@denx.de> | 2023-11-29 09:43:29 -0300 |
|---|---|---|
| committer | Daniel Lezcano <daniel.lezcano@linaro.org> | 2024-01-02 09:33:18 +0100 |
| commit | 79fa723ba84c2b1b3124c72df8a3b07b851a5477 (patch) | |
| tree | 0710c5b522babc336ce82f5698763acc346a1e9a /kernel/reboot.c | |
| parent | 5a0e241003b80247de59727c945bc94c848f893d (diff) | |
| download | linux-79fa723ba84c2b1b3124c72df8a3b07b851a5477.tar.gz linux-79fa723ba84c2b1b3124c72df8a3b07b851a5477.tar.bz2 linux-79fa723ba84c2b1b3124c72df8a3b07b851a5477.zip | |
reboot: Introduce thermal_zone_device_critical_reboot()
Introduce thermal_zone_device_critical_reboot() to trigger an
emergency reboot.
It is a counterpart of thermal_zone_device_critical() with the
difference that it will force a reboot instead of shutdown.
The motivation for doing this is to allow the thermal subystem
to trigger a reboot when the temperature reaches the critical
temperature.
Signed-off-by: Fabio Estevam <festevam@denx.de>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20231129124330.519423-3-festevam@gmail.com
Diffstat (limited to 'kernel/reboot.c')
| -rw-r--r-- | kernel/reboot.c | 28 |
1 files changed, 17 insertions, 11 deletions
diff --git a/kernel/reboot.c b/kernel/reboot.c index b236c4c06bb3..35d5e0b67993 100644 --- a/kernel/reboot.c +++ b/kernel/reboot.c @@ -957,19 +957,22 @@ 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 shutdown or reboot * - * @reason: Reason of emergency shutdown to be printed. - * @ms_until_forced: Time to wait for orderly shutdown before tiggering a - * forced shudown. Negative value disables the forced - * shutdown. + * @reason: Reason of emergency shutdown or reboot to be printed. + * @ms_until_forced: Time to wait for orderly shutdown or reboot before + * triggering it. Negative value disables the forced + * shutdown or reboot. + * @shutdown: If true, indicates that a shutdown will happen + * after the critical tempeature is reached. + * If false, indicates that a reboot will happen + * after the critical tempeature is reached. * - * Initiate an emergency system shutdown in order to protect hardware from - * further damage. Usage examples include a thermal protection or a voltage or - * current regulator failures. - * NOTE: The request is ignored if protection shutdown is already pending even - * if the previous request has given a large timeout for forced shutdown. - * Can be called from any context. + * Initiate an emergency system shutdown or reboot in order to protect + * hardware from further damage. Usage examples include a thermal protection. + * NOTE: The request is ignored if protection shutdown or reboot is already + * pending even if the previous request has given a large timeout for forced + * shutdown/reboot. */ void __hw_protection_shutdown(const char *reason, int ms_until_forced, bool shutdown) { @@ -988,7 +991,10 @@ void __hw_protection_shutdown(const char *reason, int ms_until_forced, bool shut hw_failure_emergency_poweroff(ms_until_forced); if (shutdown) orderly_poweroff(true); + else + orderly_reboot(); } +EXPORT_SYMBOL_GPL(__hw_protection_shutdown); static int __init reboot_setup(char *str) { |