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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2008-04-19 13:44:57 -0400
committerIngo Molnar <mingo@elte.hu>2008-04-19 13:44:57 -0400
commitd0b27fa77854b149ad4af08b0fe47fe712a47ade (patch)
tree2f4487c108a5132e8d52456567b4a67e78fbb4a6 /kernel/time
parent57d3da2911787a101a384532f4519f9640bae883 (diff)
sched: rt-group: synchonised bandwidth period
Various SMP balancing algorithms require that the bandwidth period run in sync. Possible improvements are moving the rt_bandwidth thing into root_domain and keeping a span per rt_bandwidth which marks throttled cpus. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/time')
-rw-r--r--kernel/time/tick-sched.c5
1 files changed, 0 insertions, 5 deletions
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index 69dba0c71727..d358d4e3a958 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -191,7 +191,6 @@ u64 get_cpu_idle_time_us(int cpu, u64 *last_update_time)
191void tick_nohz_stop_sched_tick(void) 191void tick_nohz_stop_sched_tick(void)
192{ 192{
193 unsigned long seq, last_jiffies, next_jiffies, delta_jiffies, flags; 193 unsigned long seq, last_jiffies, next_jiffies, delta_jiffies, flags;
194 unsigned long rt_jiffies;
195 struct tick_sched *ts; 194 struct tick_sched *ts;
196 ktime_t last_update, expires, now; 195 ktime_t last_update, expires, now;
197 struct clock_event_device *dev = __get_cpu_var(tick_cpu_device).evtdev; 196 struct clock_event_device *dev = __get_cpu_var(tick_cpu_device).evtdev;
@@ -243,10 +242,6 @@ void tick_nohz_stop_sched_tick(void)
243 next_jiffies = get_next_timer_interrupt(last_jiffies); 242 next_jiffies = get_next_timer_interrupt(last_jiffies);
244 delta_jiffies = next_jiffies - last_jiffies; 243 delta_jiffies = next_jiffies - last_jiffies;
245 244
246 rt_jiffies = rt_needs_cpu(cpu);
247 if (rt_jiffies && rt_jiffies < delta_jiffies)
248 delta_jiffies = rt_jiffies;
249
250 if (rcu_needs_cpu(cpu)) 245 if (rcu_needs_cpu(cpu))
251 delta_jiffies = 1; 246 delta_jiffies = 1;
252 /* 247 /*