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CONFIG_INTRHOOK(9): Call handlers after boot

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This enables adding drivers on demand which use this service after
initialization.
This commit is contained in:
Sebastian Huber
2019-07-25 10:20:19 +02:00
parent f052790a24
commit 989e2dd76e
2 changed files with 45 additions and 5 deletions
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16
freebsd/sys/kern/subr_autoconf.c
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@@ -63,6 +63,9 @@ static TAILQ_HEAD(, intr_config_hook) intr_config_hook_list =
static struct intr_config_hook *next_to_notify;
static struct mtx intr_config_hook_lock;
MTX_SYSINIT(intr_config_hook, &intr_config_hook_lock, "intr config", MTX_DEF);
#ifdef __rtems__
static bool intr_boot_done;
#endif /* __rtems__ */
/* ARGSUSED */
static void run_interrupt_driven_config_hooks(void);
@@ -174,6 +177,9 @@ boot_run_interrupt_driven_config_hooks(void *dummy)
mtx_lock(&intr_config_hook_lock);
}
}
#ifdef __rtems__
intr_boot_done = true;
#endif /* __rtems__ */
mtx_unlock(&intr_config_hook_lock);
TSUNWAIT("config hooks");
}
@@ -190,6 +196,9 @@ int
config_intrhook_establish(struct intr_config_hook *hook)
{
struct intr_config_hook *hook_entry;
#ifdef __rtems__
bool run;
#endif /* __rtems__ */
TSHOLD("config hooks");
mtx_lock(&intr_config_hook_lock);
@@ -205,16 +214,21 @@ config_intrhook_establish(struct intr_config_hook *hook)
TAILQ_INSERT_TAIL(&intr_config_hook_list, hook, ich_links);
if (next_to_notify == NULL)
next_to_notify = hook;
#ifdef __rtems__
run = intr_boot_done;
#endif /* __rtems__ */
mtx_unlock(&intr_config_hook_lock);
#ifndef __rtems__
if (cold == 0)
#else /* __rtems__ */
if (run)
#endif /* __rtems__ */
/*
* XXX Call from a task since not all drivers expect
* to be re-entered at the time a hook is established.
*/
/* XXX Sufficient for modules loaded after initial config??? */
run_interrupt_driven_config_hooks();
#endif /* __rtems__ */
return (0);
}