diff options
Diffstat (limited to 'sys/kern/kern_shutdown.c')
| -rw-r--r-- | sys/kern/kern_shutdown.c | 38 |
1 files changed, 33 insertions, 5 deletions
diff --git a/sys/kern/kern_shutdown.c b/sys/kern/kern_shutdown.c index ff6997c..8a327a2 100644 --- a/sys/kern/kern_shutdown.c +++ b/sys/kern/kern_shutdown.c @@ -36,7 +36,7 @@ * SUCH DAMAGE. * * @(#)kern_shutdown.c 8.3 (Berkeley) 1/21/94 - * $Id: kern_shutdown.c,v 1.39 1998/09/15 08:49:52 gibbs Exp $ + * $Id: kern_shutdown.c,v 1.40 1998/09/20 16:50:31 dt Exp $ */ #include "opt_ddb.h" @@ -111,6 +111,7 @@ typedef struct shutdown_list_element { LIST_ENTRY(shutdown_list_element) links; bootlist_fn function; void *arg; + int priority; } *sle_p; /* @@ -275,7 +276,6 @@ boot(howto) (*ep->function)(howto, ep->arg); if (howto & RB_HALT) { - cpu_power_down(); printf("\n"); printf("The operating system has halted.\n"); printf("Please press any key to reboot.\n\n"); @@ -431,7 +431,7 @@ panic(const char *fmt, ...) } /* - * Two routines to handle adding/deleting items on the + * Three routines to handle adding/deleting items on the * shutdown callout lists * * at_shutdown(): @@ -442,7 +442,19 @@ panic(const char *fmt, ...) int at_shutdown(bootlist_fn function, void *arg, int queue) { - sle_p ep; + return(at_shutdown_pri(function, arg, queue, SHUTDOWN_PRI_DEFAULT)); +} + +/* + * at_shutdown_pri(): + * Take the arguments given and put them onto the shutdown callout list + * with the given execution priority. + * returns 0 on success. + */ +int +at_shutdown_pri(bootlist_fn function, void *arg, int queue, int pri) +{ + sle_p ep, ip; if (queue < SHUTDOWN_PRE_SYNC || queue > SHUTDOWN_FINAL) { @@ -457,7 +469,23 @@ at_shutdown(bootlist_fn function, void *arg, int queue) return (ENOMEM); ep->function = function; ep->arg = arg; - LIST_INSERT_HEAD(&shutdown_lists[queue], ep, links); + ep->priority = pri; + + /* Sort into list of items on this queue */ + ip = LIST_FIRST(&shutdown_lists[queue]); + if (ip == NULL) { + LIST_INSERT_HEAD(&shutdown_lists[queue], ep, links); + } else { + for (; LIST_NEXT(ip, links) != NULL; ip = LIST_NEXT(ip, links)) { + if (ep->priority < ip->priority) { + LIST_INSERT_BEFORE(ip, ep, links); + ep = NULL; + break; + } + } + if (ep != NULL) + LIST_INSERT_AFTER(ip, ep, links); + } return (0); } |
