struct task_struct *tsk,
struct task_cputime *times)
{
- struct signal_struct *sig;
+ struct task_cputime *totals, *tot;
int i;
- struct task_cputime *tot;
- sig = tsk->signal;
- if (unlikely(!sig) || !sig->cputime.totals) {
+ totals = tsk->signal->cputime.totals;
+ if (!totals) {
times->utime = tsk->utime;
times->stime = tsk->stime;
times->sum_exec_runtime = tsk->se.sum_exec_runtime;
return;
}
+
times->stime = times->utime = cputime_zero;
times->sum_exec_runtime = 0;
for_each_possible_cpu(i) {
- tot = per_cpu_ptr(tsk->signal->cputime.totals, i);
+ tot = per_cpu_ptr(totals, i);
times->utime = cputime_add(times->utime, tot->utime);
times->stime = cputime_add(times->stime, tot->stime);
times->sum_exec_runtime += tot->sum_exec_runtime;
struct task_cputime cputime;
thread_group_cputime(p, &cputime);
- switch (which_clock) {
+ switch (CPUCLOCK_WHICH(which_clock)) {
default:
return -EINVAL;
case CPUCLOCK_PROF:
static unsigned long cpu_avg_load_per_task(int cpu)
{
struct rq *rq = cpu_rq(cpu);
+ unsigned long nr_running = ACCESS_ONCE(rq->nr_running);
- if (rq->nr_running)
- rq->avg_load_per_task = rq->load.weight / rq->nr_running;
+ if (nr_running)
+ rq->avg_load_per_task = rq->load.weight / nr_running;
else
rq->avg_load_per_task = 0;
if (p == rq->idle) {
p->stime = cputime_add(p->stime, steal);
- account_group_system_time(p, steal);
if (atomic_read(&rq->nr_iowait) > 0)
cpustat->iowait = cputime64_add(cpustat->iowait, tmp);
else
/*
* Underflow?
*/
- if (DEBUG_LOCKS_WARN_ON(val > preempt_count()))
+ if (DEBUG_LOCKS_WARN_ON(val > preempt_count() - (!!kernel_locked())))
return;
/*
* Is the spinlock portion underflowing?
req = list_entry(rq->migration_queue.next,
struct migration_req, list);
list_del_init(&req->list);
+ spin_unlock_irq(&rq->lock);
complete(&req->done);
+ spin_lock_irq(&rq->lock);
}
spin_unlock_irq(&rq->lock);
break;
/*
* Zero means infinite timeout - no checking done:
*/
-unsigned long __read_mostly sysctl_hung_task_timeout_secs = 120;
+unsigned long __read_mostly sysctl_hung_task_timeout_secs = 480;
unsigned long __read_mostly sysctl_hung_task_warnings = 10;
if ((long)(now - t->last_switch_timestamp) <
sysctl_hung_task_timeout_secs)
return;
- if (sysctl_hung_task_warnings < 0)
+ if (!sysctl_hung_task_warnings)
return;
sysctl_hung_task_warnings--;