[PATCH v3 10/11] powerpc/smp: Move coregroup mask updation to a new function

[Srikar Dronamraju]

Move the logic for updating the coregroup mask of a CPU to its own
function. This will help in reworking the updation of coregroup mask in
subsequent patch.

Signed-off-by: Srikar Dronamraju <srikar at linux.vnet.ibm.com>
Cc: linuxppc-dev <linuxppc-dev at lists.ozlabs.org>
Cc: LKML <linux-kernel at vger.kernel.org>
Cc: Michael Ellerman <mpe at ellerman.id.au>
Cc: Nicholas Piggin <npiggin at gmail.com>
Cc: Anton Blanchard <anton at ozlabs.org>
Cc: Oliver O'Halloran <oohall at gmail.com>
Cc: Nathan Lynch <nathanl at linux.ibm.com>
Cc: Michael Neuling <mikey at neuling.org>
Cc: Gautham R Shenoy <ego at linux.vnet.ibm.com>
Cc: Satheesh Rajendran <sathnaga at linux.vnet.ibm.com>
Cc: Ingo Molnar <mingo at kernel.org>
Cc: Peter Zijlstra <peterz at infradead.org>
Cc: Valentin Schneider <valentin.schneider at arm.com>
Cc: Qian Cai <cai at redhat.com>
---
 arch/powerpc/kernel/smp.c | 32 +++++++++++++++++++-------------
 1 file changed, 19 insertions(+), 13 deletions(-)

diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index 17e90c2414af..b48ae4e306d3 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -1338,6 +1338,23 @@ static inline void add_cpu_to_smallcore_masks(int cpu)
 	}
 }
 
+static void update_coregroup_mask(int cpu)
+{
+	int first_thread = cpu_first_thread_sibling(cpu);
+	int coregroup_id = cpu_to_coregroup_id(cpu);
+	int i;
+
+	cpumask_set_cpu(cpu, cpu_coregroup_mask(cpu));
+	for_each_cpu_and(i, cpu_online_mask, cpu_cpu_mask(cpu)) {
+		int fcpu = cpu_first_thread_sibling(i);
+
+		if (fcpu == first_thread)
+			set_cpus_related(cpu, i, cpu_coregroup_mask);
+		else if (coregroup_id == cpu_to_coregroup_id(i))
+			set_cpus_related(cpu, i, cpu_coregroup_mask);
+	}
+}
+
 static void add_cpu_to_masks(int cpu)
 {
 	int first_thread = cpu_first_thread_sibling(cpu);
@@ -1356,19 +1373,8 @@ static void add_cpu_to_masks(int cpu)
 	add_cpu_to_smallcore_masks(cpu);
 	update_mask_by_l2(cpu);
 
-	if (has_coregroup_support()) {
-		int coregroup_id = cpu_to_coregroup_id(cpu);
-
-		cpumask_set_cpu(cpu, cpu_coregroup_mask(cpu));
-		for_each_cpu_and(i, cpu_online_mask, cpu_cpu_mask(cpu)) {
-			int fcpu = cpu_first_thread_sibling(i);
-
-			if (fcpu == first_thread)
-				set_cpus_related(cpu, i, cpu_coregroup_mask);
-			else if (coregroup_id == cpu_to_coregroup_id(i))
-				set_cpus_related(cpu, i, cpu_coregroup_mask);
-		}
-	}
+	if (has_coregroup_support())
+		update_coregroup_mask(cpu);
 }
 
 /* Activate a secondary processor. */
-- 
2.17.1