* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
- * Copyright (C) 2004 Silicon Graphics, Inc. All rights reserved.
+ * Copyright (C) 2004-2006 Silicon Graphics, Inc. All rights reserved.
*/
/*
* destination.
*/
static irqreturn_t
-scdrv_event_interrupt(int irq, void *subch_data, struct pt_regs *regs)
+scdrv_event_interrupt(int irq, void *subch_data)
{
struct subch_data_s *sd = subch_data;
unsigned long flags;
static void
scdrv_dispatch_event(char *event, int len)
{
- int code, esp_code, src;
+ static int snsc_shutting_down = 0;
+ int code, esp_code, src, class;
char desc[CHUNKSIZE];
char *severity;
/* how urgent is the message? */
severity = scdrv_event_severity(code);
- if ((code & EV_CLASS_MASK) == EV_CLASS_PWRD_NOTIFY) {
+ class = (code & EV_CLASS_MASK);
+
+ if (class == EV_CLASS_PWRD_NOTIFY || code == ENV_PWRDN_PEND) {
struct task_struct *p;
- /* give a SIGPWR signal to init proc */
+ if (snsc_shutting_down)
+ return;
- /* first find init's task */
- read_lock(&tasklist_lock);
- for_each_process(p) {
- if (p->pid == 1)
- break;
- }
- if (p) { /* we found init's task */
- printk(KERN_EMERG "Power off indication received. Initiating power fail sequence...\n");
- force_sig(SIGPWR, p);
- } else { /* failed to find init's task - just give message(s) */
- printk(KERN_WARNING "Failed to find init proc to handle power off!\n");
- printk("%s|$(0x%x)%s\n", severity, esp_code, desc);
- }
- read_unlock(&tasklist_lock);
+ snsc_shutting_down = 1;
+
+ /* give a message for each type of event */
+ if (class == EV_CLASS_PWRD_NOTIFY)
+ printk(KERN_NOTICE "Power off indication received."
+ " Sending SIGPWR to init...\n");
+ else if (code == ENV_PWRDN_PEND)
+ printk(KERN_CRIT "WARNING: Shutting down the system"
+ " due to a critical environmental condition."
+ " Sending SIGPWR to init...\n");
+
+ /* give a SIGPWR signal to init proc */
+ kill_cad_pid(SIGPWR, 0);
} else {
/* print to system log */
printk("%s|$(0x%x)%s\n", severity, esp_code, desc);
{
int rv;
- event_sd = kmalloc(sizeof (struct subch_data_s), GFP_KERNEL);
+ event_sd = kzalloc(sizeof (struct subch_data_s), GFP_KERNEL);
if (event_sd == NULL) {
printk(KERN_WARNING "%s: couldn't allocate subchannel info"
" for event monitoring\n", __FUNCTION__);
}
/* initialize subch_data_s fields */
- memset(event_sd, 0, sizeof (struct subch_data_s));
event_sd->sd_nasid = scd->scd_nasid;
spin_lock_init(&event_sd->sd_rlock);
/* hook event subchannel up to the system controller interrupt */
rv = request_irq(SGI_UART_VECTOR, scdrv_event_interrupt,
- SA_SHIRQ | SA_INTERRUPT,
+ IRQF_SHARED | IRQF_DISABLED,
"system controller events", event_sd);
if (rv) {
printk(KERN_WARNING "%s: irq request failed (%d)\n",
return;
}
}
-
-