Add two new minimal routines smp_spin_table_cpu_disable() and
smp_spin_table_cpu_die() and hook them up to the smp_spin_table_ops instance.
Kexec support will use smp_spin_table_cpu_die() for re-boot of spin table CPUs,
but also needs a compatible smp_spin_table_cpu_disable() to allow
execution to reach smp_spin_table_cpu_die().
Signed-off-by: Geoff Levand <geoff at infradead.org>
---
arch/arm64/kernel/smp_spin_table.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/arch/arm64/kernel/smp_spin_table.c b/arch/arm64/kernel/smp_spin_table.c
index 7a530d2..26c780b 100644
--- a/arch/arm64/kernel/smp_spin_table.c
+++ b/arch/arm64/kernel/smp_spin_table.c
@@ -142,10 +142,23 @@ static void smp_spin_table_cpu_postboot(void)
raw_spin_unlock(&boot_lock);
}
+static int smp_spin_table_cpu_disable(unsigned int cpu)
+{
+ return 0;
+}
+
+static void smp_spin_table_cpu_die(unsigned int cpu)
+{
+ while (1)
+ cpu_relax();
+}
+
const struct cpu_operations smp_spin_table_ops = {
.name = "spin-table",
.cpu_init = smp_spin_table_cpu_init,
.cpu_prepare = smp_spin_table_cpu_prepare,
.cpu_boot = smp_spin_table_cpu_boot,
.cpu_postboot = smp_spin_table_cpu_postboot,
+ .cpu_disable = smp_spin_table_cpu_disable,
+ .cpu_die = smp_spin_table_cpu_die,
};
--
1.9.1
