sched: Remove unused cpu_nr_migrations()

cpu_nr_migrations() is not used, remove it.

Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <4AF12A66.6020609@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 754b3de..dfc21fb 100644 (file)
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -145,7 +145,6 @@ extern unsigned long this_cpu_load(void);
 
 
 extern void calc_global_load(void);
-extern u64 cpu_nr_migrations(int cpu);
 
 extern unsigned long get_parent_ip(unsigned long addr);
 

diff --git a/kernel/sched.c b/kernel/sched.c
index 67be4d0..30fd0ba 100644 (file)
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -541,7 +541,6 @@ struct rq {
        struct load_weight load;
        unsigned long nr_load_updates;
        u64 nr_switches;
-       u64 nr_migrations_in;
 
        struct cfs_rq cfs;
        struct rt_rq rt;
@@ -2049,7 +2048,6 @@ void set_task_cpu(struct task_struct *p, unsigned int new_cpu)
 #endif
        if (old_cpu != new_cpu) {
                p->se.nr_migrations++;
-               new_rq->nr_migrations_in++;
 #ifdef CONFIG_SCHEDSTATS
                if (task_hot(p, old_rq->clock, NULL))
                        schedstat_inc(p, se.nr_forced2_migrations);
@@ -2989,15 +2987,6 @@ static void calc_load_account_active(struct rq *this_rq)
 }
 
 /*
- * Externally visible per-cpu scheduler statistics:
- * cpu_nr_migrations(cpu) - number of migrations into that cpu
- */
-u64 cpu_nr_migrations(int cpu)
-{
-       return cpu_rq(cpu)->nr_migrations_in;
-}
-
-/*
  * Update rq->cpu_load[] statistics. This function is usually called every
  * scheduler tick (TICK_NSEC).
  */