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Add event handlers for (ACPI) suspend/resume events. Suspend event handlers

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are invoked right before device drivers go into sleep state and resume event
handlers are invoked right after all device drivers are waken up.
This commit is contained in:
Jung-uk Kim 2011-04-14 22:17:39 +00:00
parent 3472288282
commit 4a8fa6fe58
2 changed files with 9 additions and 0 deletions
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4
sys/dev/acpica/acpi.c
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@ -2594,6 +2594,8 @@ acpi_EnterSleepState(struct acpi_softc *sc, int state)
return_ACPI_STATUS (AE_OK);
}
EVENTHANDLER_INVOKE(power_suspend);
if (smp_started) {
thread_lock(curthread);
sched_bind(curthread, 0);
@ -2685,6 +2687,8 @@ acpi_EnterSleepState(struct acpi_softc *sc, int state)
thread_unlock(curthread);
}
EVENTHANDLER_INVOKE(power_resume);
/* Allow another sleep request after a while. */
timeout(acpi_sleep_enable, sc, hz * ACPI_MINIMUM_AWAKETIME);

5
sys/sys/eventhandler.h
View File

@ -178,6 +178,11 @@ EVENTHANDLER_DECLARE(shutdown_pre_sync, shutdown_fn); /* before fs sync */
EVENTHANDLER_DECLARE(shutdown_post_sync, shutdown_fn); /* after fs sync */
EVENTHANDLER_DECLARE(shutdown_final, shutdown_fn);
/* Power state change events */
typedef void (*power_change_fn)(void *);
EVENTHANDLER_DECLARE(power_resume, power_change_fn);
EVENTHANDLER_DECLARE(power_suspend, power_change_fn);
/* Low memory event */
typedef void (*vm_lowmem_handler_t)(void *, int);
#define LOWMEM_PRI_DEFAULT EVENTHANDLER_PRI_FIRST