Add support for PCMCIA card Sierra WIreless AC850

[linux-2.6] / kernel / sched.c

diff --git a/kernel/sched.c b/kernel/sched.c
index 9887ca005c50339b84417b60934d09763d838f33..bba57adb95044ba215caa58ee7bdd514ccd71c1c 100644 (file)
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -1521,6 +1521,12 @@ static int try_to_wake_up(struct task_struct *p, unsigned int state, int sync)
                        unsigned long tl = this_load;
                        unsigned long tl_per_task;
 
+                       /*
+                        * Attract cache-cold tasks on sync wakeups:
+                        */
+                       if (sync && !task_hot(p, rq->clock, this_sd))
+                               goto out_set_cpu;
+
                        schedstat_inc(p, se.nr_wakeups_affine_attempts);
                        tl_per_task = cpu_avg_load_per_task(this_cpu);
 
@@ -1590,16 +1596,7 @@ out_activate:
                schedstat_inc(p, se.nr_wakeups_remote);
        update_rq_clock(rq);
        activate_task(rq, p, 1);
-       /*
-        * Sync wakeups (i.e. those types of wakeups where the waker
-        * has indicated that it will leave the CPU in short order)
-        * don't trigger a preemption, if the woken up task will run on
-        * this cpu. (in this case the 'I will reschedule' promise of
-        * the waker guarantees that the freshly woken up task is going
-        * to be considered on this CPU.)
-        */
-       if (!sync || cpu != this_cpu)
-               check_preempt_curr(rq, p);
+       check_preempt_curr(rq, p);
        success = 1;
 
 out_running:
@@ -3302,6 +3299,25 @@ void account_user_time(struct task_struct *p, cputime_t cputime)
                cpustat->user = cputime64_add(cpustat->user, tmp);
 }
 
+/*
+ * Account guest cpu time to a process.
+ * @p: the process that the cpu time gets accounted to
+ * @cputime: the cpu time spent in virtual machine since the last update
+ */
+void account_guest_time(struct task_struct *p, cputime_t cputime)
+{
+       cputime64_t tmp;
+       struct cpu_usage_stat *cpustat = &kstat_this_cpu.cpustat;
+
+       tmp = cputime_to_cputime64(cputime);
+
+       p->utime = cputime_add(p->utime, cputime);
+       p->gtime = cputime_add(p->gtime, cputime);
+
+       cpustat->user = cputime64_add(cpustat->user, tmp);
+       cpustat->guest = cputime64_add(cpustat->guest, tmp);
+}
+
 /*
  * Account system cpu time to a process.
  * @p: the process that the cpu time gets accounted to
@@ -3315,6 +3331,12 @@ void account_system_time(struct task_struct *p, int hardirq_offset,
        struct rq *rq = this_rq();
        cputime64_t tmp;
 
+       if (p->flags & PF_VCPU) {
+               account_guest_time(p, cputime);
+               p->flags &= ~PF_VCPU;
+               return;
+       }
+
        p->stime = cputime_add(p->stime, cputime);
 
        /* Add system time to cpustat. */