[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date: Wed, 10 Oct 2007 10:49:35 -0400
From: Gregory Haskins <ghaskins@...ell.com>
To: mingo@...e.hu, peterz@...radead.org, kravetz@...ibm.com,
rostedt@...dmis.org
Cc: ghaskins@...ell.com, linux-rt-users@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH] RT: Fix special-case exception for preempting the local CPU
Applies to 2.6.23-rc9-rt2... This is another RTO related fix from the thread
two days ago.
---
RT: Fix special-case exception for preempting the local CPU
Check whether the local CPU is eligible to take the task before trying to
preempt it.
Signed-off-by: Gregory Haskins <ghaskins@...ell.com>
---
kernel/sched.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/kernel/sched.c b/kernel/sched.c
index 3e75c62..b7f7a96 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -1869,7 +1869,8 @@ out_activate:
* extra locking in this particular case, because
* we are on the current CPU.)
*/
- if (TASK_PREEMPTS_CURR(p, this_rq))
+ if (TASK_PREEMPTS_CURR(p, this_rq)
+ && cpu_isset(this_cpu, p->cpus_allowed))
set_tsk_need_resched(this_rq->curr);
else
/*
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists