On Wed, 4 Mar 2015, Andrew Bresticker wrote: > If a machine-specific hook is not implemented for restart, poweroff, > or halt, fall back to halting secondary CPUs, disabling interrupts, > and spinning. In the case of restart, attempt to restart the system > via do_kernel_restart() (which will call any registered restart > handlers) before halting. > > Signed-off-by: Andrew Bresticker <[email protected]> > --- > arch/mips/kernel/reset.c | 20 ++++++++++++++++++++ > 1 file changed, 20 insertions(+) > > diff --git a/arch/mips/kernel/reset.c b/arch/mips/kernel/reset.c > index 07fc524..87b1f08 100644 > --- a/arch/mips/kernel/reset.c > +++ b/arch/mips/kernel/reset.c > @@ -29,16 +29,36 @@ void machine_restart(char *command) > { > if (_machine_restart) > _machine_restart(command); > + > +#ifdef CONFIG_SMP > + smp_send_stop(); > +#endif > + do_kernel_restart(command); > + pr_emerg("Reboot failed -- System halted\n"); > + local_irq_disable(); > + while (1);
I think it would make sense to put WAIT or suchlike in the final loop so that such a halted system does not suck power unnecessarily. I think bits in arch/mips/kernel/idle.c should do, after some massaging. As the next step perhaps, don't treat it as a NACK for this change. Maciej -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
