Commit 1c37963b authored Apr 11, 2018 by Russell King

ARM: kexec: record parent context registers for non-crash CPUs



How we got to machine_crash_nonpanic_core() (iow, from an IPI, etc) is
not interesting for debugging a crash.  The more interesting context
is the parent context prior to the IPI being received.

Record the parent context register state rather than the register state
in machine_crash_nonpanic_core(), which is more relevant to the failing
condition.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>

parent 2d7b3c64

arch/arm/kernel/machine_kexec.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -83,7 +83,7 @@ void machine_crash_nonpanic_core(void *unused)
		{
		struct pt_regs regs;

		crash_setup_regs(&regs, NULL);
		crash_setup_regs(&regs, get_irq_regs());
		printk(KERN_DEBUG "CPU %u will stop doing anything useful since another CPU has crashed\n",
		smp_processor_id());
		crash_save_cpu(&regs, smp_processor_id());