Merge branch 'master' into next
Conflicts: security/keys/internal.h security/keys/process_keys.c security/keys/request_key.c Fixed conflicts above by using the non 'tsk' versions. Signed-off-by: James Morris <jmorris@namei.org>
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@ -970,6 +970,51 @@ undo:
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return ret;
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}
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#ifdef CONFIG_SMP
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struct work_for_cpu {
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struct work_struct work;
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long (*fn)(void *);
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void *arg;
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long ret;
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};
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static void do_work_for_cpu(struct work_struct *w)
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{
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struct work_for_cpu *wfc = container_of(w, struct work_for_cpu, work);
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wfc->ret = wfc->fn(wfc->arg);
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}
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/**
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* work_on_cpu - run a function in user context on a particular cpu
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* @cpu: the cpu to run on
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* @fn: the function to run
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* @arg: the function arg
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*
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* This will return -EINVAL in the cpu is not online, or the return value
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* of @fn otherwise.
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*/
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long work_on_cpu(unsigned int cpu, long (*fn)(void *), void *arg)
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{
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struct work_for_cpu wfc;
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INIT_WORK(&wfc.work, do_work_for_cpu);
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wfc.fn = fn;
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wfc.arg = arg;
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get_online_cpus();
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if (unlikely(!cpu_online(cpu)))
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wfc.ret = -EINVAL;
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else {
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schedule_work_on(cpu, &wfc.work);
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flush_work(&wfc.work);
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}
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put_online_cpus();
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return wfc.ret;
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}
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EXPORT_SYMBOL_GPL(work_on_cpu);
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#endif /* CONFIG_SMP */
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void __init init_workqueues(void)
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{
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cpu_populated_map = cpu_online_map;
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