MIPS: XLR, XLS: Add comment for smp setup

It seems that BSP could be setup twice, but the nlm_cpu_ready array is only
set for ASPs in smpboot.S, not including BSP.

Signed-off-by: Hillf Danton <dhillf@gmail.com>
Cc: "Jayachandran C." <jayachandranc@netlogicmicro.com>
Cc: LKML <linux-kernel@vger.kernel.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2695/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>,

diff --git a/arch/mips/netlogic/xlr/smp.c b/arch/mips/netlogic/xlr/smp.c
index e237212..080284d 100644 (file)
--- a/arch/mips/netlogic/xlr/smp.c
+++ b/arch/mips/netlogic/xlr/smp.c
@@ -158,6 +158,10 @@ void __init nlm_smp_setup(void)
 
        num_cpus = 1;
        for (i = 0; i < NR_CPUS; i++) {
+               /*
+                * BSP is not set in nlm_cpu_ready array, it is only for
+                * ASPs (goto see smpboot.S)
+                */
                if (nlm_cpu_ready[i]) {
                        cpu_set(i, phys_cpu_present_map);
                        __cpu_number_map[i] = num_cpus;