forked from luck/tmp_suning_uos_patched
percpu: fix too low alignment restriction on UP
UP __alloc_percpu() triggered WARN_ON_ONCE() if the requested alignment is larger than that of unsigned long long, which is too small for all the cacheline aligned allocations. Bump it up to SMP_CACHE_BYTES which kmalloc allocations generally guarantee. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Ingo Molnar <mingo@elte.hu>
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@ -156,7 +156,7 @@ static inline void *__alloc_percpu(size_t size, size_t align)
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* on it. Larger alignment should only be used for module
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* percpu sections on SMP for which this path isn't used.
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*/
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WARN_ON_ONCE(align > __alignof__(unsigned long long));
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WARN_ON_ONCE(align > SMP_CACHE_BYTES);
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return kzalloc(size, GFP_KERNEL);
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}
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