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author | Ingo Molnar <mingo@elte.hu> | 2010-02-08 02:55:43 -0500 |
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committer | Ingo Molnar <mingo@elte.hu> | 2010-02-08 02:55:46 -0500 |
commit | 6d3e0907b8b239d16720d144e2675ecf10d3bc3b (patch) | |
tree | e0b0743b5f6f82b057cafc4f3687396a6e01a0b4 /kernel/fork.c | |
parent | 23577256953c870de9b724c3a2611ce7be6a1e4e (diff) | |
parent | 50200df462023b187d80a99a52f5f2cfe3c86c26 (diff) |
Merge branch 'sched/urgent' into sched/core
Merge reason: Merge dependent fix, update to latest -rc.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/fork.c')
-rw-r--r-- | kernel/fork.c | 15 |
1 files changed, 0 insertions, 15 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index 5b2959b3ffc2..f88bd984df35 100644 --- a/kernel/fork.c +++ b/kernel/fork.c | |||
@@ -1241,21 +1241,6 @@ static struct task_struct *copy_process(unsigned long clone_flags, | |||
1241 | /* Need tasklist lock for parent etc handling! */ | 1241 | /* Need tasklist lock for parent etc handling! */ |
1242 | write_lock_irq(&tasklist_lock); | 1242 | write_lock_irq(&tasklist_lock); |
1243 | 1243 | ||
1244 | /* | ||
1245 | * The task hasn't been attached yet, so its cpus_allowed mask will | ||
1246 | * not be changed, nor will its assigned CPU. | ||
1247 | * | ||
1248 | * The cpus_allowed mask of the parent may have changed after it was | ||
1249 | * copied first time - so re-copy it here, then check the child's CPU | ||
1250 | * to ensure it is on a valid CPU (and if not, just force it back to | ||
1251 | * parent's CPU). This avoids alot of nasty races. | ||
1252 | */ | ||
1253 | p->cpus_allowed = current->cpus_allowed; | ||
1254 | p->rt.nr_cpus_allowed = current->rt.nr_cpus_allowed; | ||
1255 | if (unlikely(!cpu_isset(task_cpu(p), p->cpus_allowed) || | ||
1256 | !cpu_online(task_cpu(p)))) | ||
1257 | set_task_cpu(p, smp_processor_id()); | ||
1258 | |||
1259 | /* CLONE_PARENT re-uses the old parent */ | 1244 | /* CLONE_PARENT re-uses the old parent */ |
1260 | if (clone_flags & (CLONE_PARENT|CLONE_THREAD)) { | 1245 | if (clone_flags & (CLONE_PARENT|CLONE_THREAD)) { |
1261 | p->real_parent = current->real_parent; | 1246 | p->real_parent = current->real_parent; |