towards unattended reboot

Q: Given a 2.4.19 kernel, how do you get it to automatically reboot on crash?

A: see below. The first one breaks the loop on dumping the stack. The
second part resets the machine in parisc_terminate().

thoughts?
lamont

diff -ur x/kernel-source-2.4.19-hppa/arch/parisc/kernel/traps.c kernel-source-2.4.19-hppa/arch/parisc/kernel/traps.c
@@ -148,6 +148,11 @@
 void show_stack(struct pt_regs *regs)
 {
 #if 1
+	static int tried_stack=0;
+	if (tried_stack)
+		return;
+	tried_stack++;
+
 	/* If regs->sr[7] == 0, we are on a kernel stack */
 	if (regs->sr[7] == 0) {
 

@@ -462,6 +467,12 @@
 	 * system will shut down immediately right here. */
 	pdc_soft_power_button(0);
 	
+	{
+		static int tried_once=0;
+		if (!tried_once++)
+			__raw_writel(5,0xfffe0030);
+	}
+	
 	for(;;)
 	    ;
 }

Looks awesome in my opinion. I've needed something like this for my cluster, it gets anyone when machines don't reset on crash :)

Though having this be optional seems like an important feature to add.

c.

In the dump driver, at the end of dump, it reboot automatically:

...

        DUMP_PRINT("Rebooting in %d seconds ...", panic_timeout);
        dump_wait_n_msec(panic_timeout * 1000);
        machine_restart(NULL);
        return;
}

--
Vidal Bruno, (770-4271)
SSD-HA Team, HP-UX & LINUX Support
[email protected]

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I want a /proc entry to tweak it... :-)

lamont