acpi_mutex
struct acpi_mutex *am;
struct acpi_mutex *am = (struct acpi_mutex *)Handle;
struct acpi_mutex *am = (struct acpi_mutex *)Handle;
struct acpi_mutex *am = (struct acpi_mutex *)Handle;
struct mtx acpi_mutex;
mtx_init(&acpi_mutex, "ACPI global lock", NULL, MTX_DEF);
callout_init_mtx(&acpi_sleep_timer, &acpi_mutex, 0);
extern struct mtx acpi_mutex;
knlist_init_mtx(&clone->sel_read.si_note, &acpi_mutex);