Re: [Patch -v3 1/4] Migrate shutdown/reboot to boot cpu.

[Shawn Guo]

On Mon, Apr 15, 2013 at 12:14:29PM -0500, Robin Holt wrote:
> We recently noticed that reboot of a 1024 cpu machine takes approx 16
> minutes of just stopping the cpus.  The slowdown was tracked to commit
> f96972f.
>
> The current implementation does all the work of hot removing the cpus
> before halting the system.  We are switching to just migrating to the
> boot cpu and then continuing with shutdown/reboot.
>
> This also has the effect of not breaking x86's command line parameter for
> specifying the reboot cpu.  Note, this code was shamelessly copied from
> arch/x86/kernel/reboot.c with bits removed pertaining to the reboot_cpu
> command line parameter.
>
> Signed-off-by: Robin Holt <holt@xxxxxxx>
> To: Shawn Guo <shawn.guo@xxxxxxxxxx>

It works on my hardware - i.MX6 Quad.

Tested-by: Shawn Guo <shawn.guo@xxxxxxxxxx>
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/