[PATCH 1/2] powerpc: Use cpumask_next_wrap instead

[Shrikanth Hegde]

cpu = cpumask_next(cpu, mask)
if (cpu >= nr_cpu_ids)
    cpu = cpumask_first(mask)

Above block is identical to:
cpu = cpumask_next_wrap(cpu, mask)

Replace it, No change in functionality or performance.
Slightly simpler code.

Signed-off-by: Shrikanth Hegde <sshegde at linux.ibm.com>
---
 arch/powerpc/kernel/irq.c             | 5 +----
 arch/powerpc/mm/book3s64/hash_utils.c | 4 +---
 arch/powerpc/sysdev/xive/common.c     | 5 +----
 3 files changed, 3 insertions(+), 11 deletions(-)

diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index a0e8b998c9b5..f69de08ad347 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -370,10 +370,7 @@ int irq_choose_cpu(const struct cpumask *mask)
 do_round_robin:
 		raw_spin_lock_irqsave(&irq_rover_lock, flags);
 
-		irq_rover = cpumask_next(irq_rover, cpu_online_mask);
-		if (irq_rover >= nr_cpu_ids)
-			irq_rover = cpumask_first(cpu_online_mask);
-
+		irq_rover = cpumask_next_wrap(irq_rover, cpu_online_mask);
 		cpuid = irq_rover;
 
 		raw_spin_unlock_irqrestore(&irq_rover_lock, flags);
diff --git a/arch/powerpc/mm/book3s64/hash_utils.c b/arch/powerpc/mm/book3s64/hash_utils.c
index 9dc5889d6ecb..e4fcf929cb33 100644
--- a/arch/powerpc/mm/book3s64/hash_utils.c
+++ b/arch/powerpc/mm/book3s64/hash_utils.c
@@ -1299,9 +1299,7 @@ static void stress_hpt_timer_fn(struct timer_list *timer)
 	if (!firmware_has_feature(FW_FEATURE_LPAR))
 		tlbiel_all();
 
-	next_cpu = cpumask_next(raw_smp_processor_id(), cpu_online_mask);
-	if (next_cpu >= nr_cpu_ids)
-		next_cpu = cpumask_first(cpu_online_mask);
+	next_cpu = cpumask_next_wrap(raw_smp_processor_id(), cpu_online_mask);
 	stress_hpt_timer.expires = jiffies + msecs_to_jiffies(10);
 	add_timer_on(&stress_hpt_timer, next_cpu);
 }
diff --git a/arch/powerpc/sysdev/xive/common.c b/arch/powerpc/sysdev/xive/common.c
index e1a4f8a97393..b6446abe29a6 100644
--- a/arch/powerpc/sysdev/xive/common.c
+++ b/arch/powerpc/sysdev/xive/common.c
@@ -577,10 +577,7 @@ static int xive_find_target_in_mask(const struct cpumask *mask,
 		 */
 		if (cpu_online(cpu) && xive_try_pick_target(cpu))
 			return cpu;
-		cpu = cpumask_next(cpu, mask);
-		/* Wrap around */
-		if (cpu >= nr_cpu_ids)
-			cpu = cpumask_first(mask);
+		cpu = cpumask_next_wrap(cpu, mask);
 	} while (cpu != first);
 
 	return -1;
-- 
2.47.3