sched/numa: Remove unused code from update_numa_stats()

With:

  commit 2d4056fafa19 ("sched/numa: Remove numa_has_capacity()")

the local variables 'smt', 'cpus' and 'capacity' and their results are not used
anymore in numa_has_capacity()

Remove this unused code.

Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@surriel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1535548752-4434-2-git-send-email-vincent.guittot@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 06ff75f..b65596f 100644 (file)
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -1463,8 +1463,7 @@ struct numa_stats {
  */
 static void update_numa_stats(struct numa_stats *ns, int nid)
 {
-       int smt, cpu, cpus = 0;
-       unsigned long capacity;
+       int cpu;
 
        memset(ns, 0, sizeof(*ns));
        for_each_cpu(cpu, cpumask_of_node(nid)) {
@@ -1473,26 +1472,8 @@ static void update_numa_stats(struct numa_stats *ns, int nid)
                ns->nr_running += rq->nr_running;
                ns->load += weighted_cpuload(rq);
                ns->compute_capacity += capacity_of(cpu);
-
-               cpus++;
        }
 
-       /*
-        * If we raced with hotplug and there are no CPUs left in our mask
-        * the @ns structure is NULL'ed and task_numa_compare() will
-        * not find this node attractive.
-        *
-        * We'll detect a huge imbalance and bail there.
-        */
-       if (!cpus)
-               return;
-
-       /* smt := ceil(cpus / capacity), assumes: 1 < smt_power < 2 */
-       smt = DIV_ROUND_UP(SCHED_CAPACITY_SCALE * cpus, ns->compute_capacity);
-       capacity = cpus / smt; /* cores */
-
-       capacity = min_t(unsigned, capacity,
-               DIV_ROUND_CLOSEST(ns->compute_capacity, SCHED_CAPACITY_SCALE));
 }
 
 struct task_numa_env {