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Merge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 

* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  sched: prevent divide by zero error in cpu_avg_load_per_task, update
  sched, cpusets: fix warning in kernel/cpuset.c
  sched: prevent divide by zero error in cpu_avg_load_per_task
wifi-calibration
Linus Torvalds 2008-11-30 13:06:47 -08:00
parent 72244c0e68 af6d596fd6
commit 9bd062d9ea
2 changed files with 4 additions and 3 deletions
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2
kernel/cpuset.c
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@ -585,7 +585,7 @@ static int generate_sched_domains(cpumask_t **domains,
int i, j, k; /* indices for partition finding loops */
cpumask_t *doms; /* resulting partition; i.e. sched domains */
struct sched_domain_attr *dattr; /* attributes for custom domains */
int ndoms; /* number of sched domains in result */
int ndoms = 0; /* number of sched domains in result */
int nslot; /* next empty doms[] cpumask_t slot */
doms = NULL;

5
kernel/sched.c
View File

@ -1453,9 +1453,10 @@ static int task_hot(struct task_struct *p, u64 now, struct sched_domain *sd);
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;