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sched: remove wait_runtime limit

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remove the wait_runtime-limit fields and the code depending on it, now
that the math has been changed over to rely on the vruntime metric.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Mike Galbraith <efault@gmx.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Ingo Molnar
2007-10-15 17:00:06 +02:00
parent 495eca494a
commit e22f5bbf86
5 changed files with 5 additions and 124 deletions
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18
kernel/sched.c
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@ -180,7 +180,6 @@ struct cfs_rq {
u64 exec_clock;
u64 min_vruntime;
s64 wait_runtime;
u64 sleeper_bonus;
unsigned long wait_runtime_overruns, wait_runtime_underruns;
struct rb_root tasks_timeline;
@ -673,19 +672,6 @@ static inline void resched_task(struct task_struct *p)
}
#endif
static u64 div64_likely32(u64 divident, unsigned long divisor)
{
#if BITS_PER_LONG == 32
if (likely(divident <= 0xffffffffULL))
return (u32)divident / divisor;
do_div(divident, divisor);
return divident;
#else
return divident / divisor;
#endif
}
#if BITS_PER_LONG == 32
# define WMULT_CONST (~0UL)
#else
@ -1016,8 +1002,6 @@ void set_task_cpu(struct task_struct *p, unsigned int new_cpu)
if (p->se.wait_start_fair)
p->se.wait_start_fair -= fair_clock_offset;
if (p->se.sleep_start_fair)
p->se.sleep_start_fair -= fair_clock_offset;
#ifdef CONFIG_SCHEDSTATS
if (p->se.wait_start)
@ -1592,7 +1576,6 @@ static void __sched_fork(struct task_struct *p)
p->se.sum_exec_runtime = 0;
p->se.prev_sum_exec_runtime = 0;
p->se.wait_runtime = 0;
p->se.sleep_start_fair = 0;
#ifdef CONFIG_SCHEDSTATS
p->se.wait_start = 0;
@ -6582,7 +6565,6 @@ void normalize_rt_tasks(void)
p->se.wait_runtime = 0;
p->se.exec_start = 0;
p->se.wait_start_fair = 0;
p->se.sleep_start_fair = 0;
#ifdef CONFIG_SCHEDSTATS
p->se.wait_start = 0;
p->se.sleep_start = 0;