[PATCH] sched: select eligible run-queue for RT task

From: Hillf Danton
Date: Fri Jun 03 2011 - 10:07:01 EST


When selecting run-queue for a given task, eligible run-queue should be
returned by checking the CPU affinity of task.

Signed-off-by: Hillf Danton <dhillf@xxxxxxxxx>
---
kernel/sched_rt.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c
index 88725c9..45b3e0a 100644
--- a/kernel/sched_rt.c
+++ b/kernel/sched_rt.c
@@ -1006,7 +1006,8 @@ select_task_rq_rt(struct task_struct *p, int
sd_flag, int flags)
int cpu;

if (sd_flag != SD_BALANCE_WAKE)
- return smp_processor_id();
+ return cpumask_test_cpu(smp_processor_id(), &p->cpus_allowed) ?
+ smp_processor_id() : task_cpu(p);

cpu = task_cpu(p);
rq = cpu_rq(cpu);
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/