This patch provides an powerpc architecture specific implementation for
defining the turbo domain to make searching of the core to be bound within
the NUMA. This provides a way to decrease the searching time for specific
architectures.
Signed-off-by: Parth Shah <pa...@linux.ibm.com>
---
arch/powerpc/include/asm/topology.h | 3 +++
arch/powerpc/kernel/smp.c | 5 +++++
2 files changed, 8 insertions(+)
diff --git a/arch/powerpc/include/asm/topology.h
b/arch/powerpc/include/asm/topology.h
index 1c777ee67180..410b94c9e1a2 100644
--- a/arch/powerpc/include/asm/topology.h
+++ b/arch/powerpc/include/asm/topology.h
@@ -133,10 +133,13 @@ static inline void shared_proc_topology_init(void) {}
#define topology_core_cpumask(cpu) (per_cpu(cpu_core_map, cpu))
#define topology_core_id(cpu) (cpu_to_core_id(cpu))
#define arch_scale_core_capacity powerpc_scale_core_capacity
+#define arch_turbo_domain powerpc_turbo_domain
unsigned long powerpc_scale_core_capacity(int first_smt,
unsigned long smt_cap);
+struct cpumask *powerpc_turbo_domain(int cpu);
+
int dlpar_cpu_readd(int cpu);
#endif
#endif
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index 149a3fbf8ed3..856f7233190e 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -1200,6 +1200,11 @@ unsigned long powerpc_scale_core_capacity(int first_cpu,
/* Scale core capacity based on smt mode */
return smt_mode == 1 ? cap : ((cap * smt_mode) >> 3) + cap;
}
+
+inline struct cpumask *powerpc_turbo_domain(int cpu)
+{
+ return cpumask_of_node(cpu_to_node(cpu));
+}
#endif
static inline void add_cpu_to_smallcore_masks(int cpu)
--
2.17.1
