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| author | Srivatsa Vaddagiri <vatsa@in.ibm.com> | 2005-09-16 19:27:40 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-09-17 11:49:59 -0700 |
| commit | 26ff6ad9786abf6f40a6d3cbb89753b4fa50cb00 (patch) | |
| tree | 8abf9b85bc5f081460f05c3e8f76328dc690f167 /kernel/fork.c | |
| parent | fa72e26a640e551637f91122d782d5a85d514f5b (diff) | |
| download | lwn-26ff6ad9786abf6f40a6d3cbb89753b4fa50cb00.tar.gz lwn-26ff6ad9786abf6f40a6d3cbb89753b4fa50cb00.zip | |
[PATCH] CPU hotplug breaks wake_up_new_task
Fix a problem wherein a new-born task is added to a dead CPU.
Signed-off-by: Srivatsa Vaddagiri <vatsa@in.ibm.com>
Acked-by: Nick Piggin <nickpiggin@yahoo.com.au>
Acked-by: Shaohua Li <shaohua.li@intel.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel/fork.c')
| -rw-r--r-- | kernel/fork.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index 8149f3602881..533ce27f4b2c 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -1062,7 +1062,8 @@ static task_t *copy_process(unsigned long clone_flags, * parent's CPU). This avoids alot of nasty races. */ p->cpus_allowed = current->cpus_allowed; - if (unlikely(!cpu_isset(task_cpu(p), p->cpus_allowed))) + if (unlikely(!cpu_isset(task_cpu(p), p->cpus_allowed) || + !cpu_online(task_cpu(p)))) set_task_cpu(p, smp_processor_id()); /* |