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    SubjectRe: [RFC -v7 PATCH 5/7] export pid symbols needed for kvm_vcpu_on_spin
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    On Wed, 2011-01-26 at 17:23 -0500, Rik van Riel wrote:
    > Export the symbols required for a race-free kvm_vcpu_on_spin.

    Avi, you asked for an example of why I hated KVM as a module :-)

    > Signed-off-by: Rik van Riel <riel@redhat.com>
    >
    > diff --git a/kernel/fork.c b/kernel/fork.c
    > index 3b159c5..adc8f47 100644
    > --- a/kernel/fork.c
    > +++ b/kernel/fork.c
    > @@ -191,6 +191,7 @@ void __put_task_struct(struct task_struct *tsk)
    > if (!profile_handoff_task(tsk))
    > free_task(tsk);
    > }
    > +EXPORT_SYMBOL_GPL(__put_task_struct);
    >
    > /*
    > * macro override instead of weak attribute alias, to workaround
    > diff --git a/kernel/pid.c b/kernel/pid.c
    > index 39b65b6..02f2212 100644
    > --- a/kernel/pid.c
    > +++ b/kernel/pid.c
    > @@ -435,6 +435,7 @@ struct pid *get_task_pid(struct task_struct *task, enum pid_type type)
    > rcu_read_unlock();
    > return pid;
    > }
    > +EXPORT_SYMBOL_GPL(get_task_pid);
    >
    > struct task_struct *get_pid_task(struct pid *pid, enum pid_type type)
    > {
    > @@ -446,6 +447,7 @@ struct task_struct *get_pid_task(struct pid *pid, enum pid_type type)
    > rcu_read_unlock();
    > return result;
    > }
    > +EXPORT_SYMBOL_GPL(get_pid_task);
    >
    > struct pid *find_get_pid(pid_t nr)
    > {




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