[PATCH 14/22] x86: smp: use cpumask_weight_eq() in remove_siblinginfo

[Yury Norov]

cpumask_weight_eq() is more efficient because it may stop traversing
cpumask depending on condition.

CC: Balbir Singh <sblbir@xxxxxxxxxx>
CC: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
CC: Borislav Petkov <bp@xxxxxxxxx>
CC: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
CC: H. Peter Anvin <hpa@xxxxxxxxx>
CC: Huang Rui <ray.huang@xxxxxxx>
CC: Ingo Molnar <mingo@xxxxxxxxxx>
CC: Paul E. McKenney <paulmck@xxxxxxxxxx>
CC: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
CC: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
CC: Sean Christopherson <seanjc@xxxxxxxxxx>
CC: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CC: Tim Chen <tim.c.chen@xxxxxxxxxxxxxxx>
CC: x86@xxxxxxxxxx
CC: linux-kernel@xxxxxxxxxxxxxxx
Signed-off-by: Yury Norov <yury.norov@xxxxxxxxx>
---
 arch/x86/kernel/smpboot.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 7d948f79ef31..74ca98b3ab2a 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -1621,7 +1621,7 @@ static void remove_siblinginfo(int cpu)
 
 	for_each_cpu(sibling, topology_sibling_cpumask(cpu)) {
 		cpumask_clear_cpu(cpu, topology_sibling_cpumask(sibling));
-		if (cpumask_weight(topology_sibling_cpumask(sibling)) == 1)
+		if (cpumask_weight_eq(topology_sibling_cpumask(sibling), 1))
 			cpu_data(sibling).smt_active = false;
 	}
 
-- 
2.32.0