On Thu, Jul 23, 2020 at 02:21:10PM +0530, Srikar Dronamraju wrote:
> Move topology fixup based on the platform attributes into its own
> function which is called just before set_sched_topology.
>
> Cc: linuxppc-dev <linuxppc-...@lists.ozlabs.org>
> Cc: LKML <linux-kernel@vger.kernel.org>
> Cc: Michael Ellerman <m...@ellerman.id.au>
> Cc: Nicholas Piggin <npig...@gmail.com>
> Cc: Anton Blanchard <an...@ozlabs.org>
> Cc: Oliver O'Halloran <ooh...@gmail.com>
> Cc: Nathan Lynch <nath...@linux.ibm.com>
> Cc: Michael Neuling <mi...@neuling.org>
> Cc: Gautham R Shenoy <e...@linux.vnet.ibm.com>
> Cc: Ingo Molnar <mi...@kernel.org>
> Cc: Peter Zijlstra <pet...@infradead.org>
> Cc: Valentin Schneider <valentin.schnei...@arm.com>
> Cc: Jordan Niethe <jniet...@gmail.com>
> Signed-off-by: Srikar Dronamraju <sri...@linux.vnet.ibm.com>
Reviewed-by: Gautham R. Shenoy <e...@linux.vnet.ibm.com>
> ---
> Changelog v2 -> v3:
> Rewrote changelog (Gautham)
> Renamed to powerpc/smp: Move topology fixups into a new function
>
> arch/powerpc/kernel/smp.c | 17 +++++++++++------
> 1 file changed, 11 insertions(+), 6 deletions(-)
>
> diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
> index a685915e5941..da27f6909be1 100644
> --- a/arch/powerpc/kernel/smp.c
> +++ b/arch/powerpc/kernel/smp.c
> @@ -1368,6 +1368,16 @@ int setup_profiling_timer(unsigned int multiplier)
> return 0;
> }
>
> +static void fixup_topology(void)
> +{
> +#ifdef CONFIG_SCHED_SMT
> + if (has_big_cores) {
> + pr_info("Big cores detected but using small core scheduling\n");
> + powerpc_topology[0].mask = smallcore_smt_mask;
> + }
> +#endif
> +}
> +
> void __init smp_cpus_done(unsigned int max_cpus)
> {
> /*
> @@ -1381,12 +1391,7 @@ void __init smp_cpus_done(unsigned int max_cpus)
>
> dump_numa_cpu_topology();
>
> -#ifdef CONFIG_SCHED_SMT
> - if (has_big_cores) {
> - pr_info("Big cores detected but using small core scheduling\n");
> - powerpc_topology[0].mask = smallcore_smt_mask;
> - }
> -#endif
> + fixup_topology();
> set_sched_topology(powerpc_topology);
> }
>
> --
> 2.18.2
>
