Messages in this thread | | | From | Geert Uytterhoeven <> | Date | Sat, 30 Jan 2021 11:37:57 +0100 | Subject | Re: [PATCH] openrisc: use device tree to determine present cpus |
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Hi Jan,
On Fri, Jan 29, 2021 at 7:34 PM Jan Henrik Weinstock <jan.weinstock@rwth-aachen.de> wrote: > This patch proposes to use the device tree to determine the present cpus > instead of assuming all CONFIG_NRCPUS are actually present in the system. > > Signed-off-by: Jan Henrik Weinstock <jan.weinstock@rwth-aachen.de>
Thanks for your patch!
> --- a/arch/openrisc/kernel/smp.c > +++ b/arch/openrisc/kernel/smp.c
> @@ -68,14 +69,25 @@ void __init smp_init_cpus(void) > > void __init smp_prepare_cpus(unsigned int max_cpus) > { > - int i; > + u32 cpu_id; > + struct device_node *cpu, *cpus; > > /* > * Initialise the present map, which describes the set of CPUs > * actually populated at the present time. > */ > - for (i = 0; i < max_cpus; i++) > - set_cpu_present(i, true); > + cpus = of_find_node_by_path("/cpus"); > + for_each_child_of_node(cpus, cpu) {
for_each_of_cpu_node()?
Gr{oetje,eeting}s,
Geert
-- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds
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