Merge branch 'sched/urgent' into sched/clock

kernel/Kconfig.hz

@@ -55,4 +55,4 @@ config HZ
 	default 1000 if HZ_1000
 
 config SCHED_HRTICK
-	def_bool HIGH_RES_TIMERS && USE_GENERIC_SMP_HELPERS
+	def_bool HIGH_RES_TIMERS && (!SMP || USE_GENERIC_SMP_HELPERS)

kernel/sched.c

@@ -834,7 +834,7 @@ static inline u64 global_rt_period(void)
 
 static inline u64 global_rt_runtime(void)
 {
-	if (sysctl_sched_rt_period < 0)
+	if (sysctl_sched_rt_runtime < 0)
 		return RUNTIME_INF;
 
 	return (u64)sysctl_sched_rt_runtime * NSEC_PER_USEC;

kernel/sched_clock.c

@@ -32,6 +32,15 @@
 #include <linux/ktime.h>
 #include <linux/module.h>
 
+/*
+ * Scheduler clock - returns current time in nanosec units.
+ * This is default implementation.
+ * Architectures and sub-architectures can override this.
+ */
+unsigned long long __attribute__((weak)) sched_clock(void)
+{
+	return (unsigned long long)jiffies * (NSEC_PER_SEC / HZ);
+}
 
 #ifdef CONFIG_HAVE_UNSTABLE_SCHED_CLOCK
 
@@ -321,16 +330,6 @@ EXPORT_SYMBOL_GPL(sched_clock_idle_wakeup_event);
 
 #endif
 
-/*
- * Scheduler clock - returns current time in nanosec units.
- * This is default implementation.
- * Architectures and sub-architectures can override this.
- */
-unsigned long long __attribute__((weak)) sched_clock(void)
-{
-	return (unsigned long long)jiffies * (NSEC_PER_SEC / HZ);
-}
-
 unsigned long long cpu_clock(int cpu)
 {
 	unsigned long long clock;

kernel/sched_fair.c

@@ -899,7 +899,7 @@ static void hrtick_start_fair(struct rq *rq, struct task_struct *p)
 		 * doesn't make sense. Rely on vruntime for fairness.
 		 */
 		if (rq->curr != p)
-			delta = max(10000LL, delta);
+			delta = max_t(s64, 10000LL, delta);
 
 		hrtick_start(rq, delta);
 	}