Партнёры:
Хостинг:
config_intrhook - schedule a function to be run after interrupts have been enabled, but before root is mounted
The
config_intrhook_disestablish ();
function removes the entry from the hook queue.
Before root is mounted, all the previously established hooks are
run.
The boot process is then stalled until all handlers remove their hook
from the hook queue with
config_intrhook_disestablish (.);
The boot process then proceeds to attempt to mount the root file
system.
Any driver that can potentially provide devices they wish to be
mounted as root must use either this hook, or probe all these devices
in the initial probe.
Since interrupts are disabled during the probe process, many drivers
need a method to probe for devices with interrupts enabled.
The requests are made with the Vt intr_config_hook structure. This structure is defined as follows:
struct intr_config_hook {
TAILQ_ENTRY(intr_config_hook) ich_links;/* Private */
void (*ich_func)(void *arg); /* function to call */
void *ich_arg; /* Argument to call */
};
Storage for the Vt intr_config_hook structure must be provided by the driver. It must be stable from just before the hook is established until after the hook is disestablished.
Specifically, hooks are run at
SI_SUB_INT_CONFIG_HOOKS (,);
which is immediately after the scheduler is started,
and just before the root file system device is discovered.
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Created 1996-2024 by Maxim Chirkov Добавить, Поддержать, Вебмастеру |