x86,percpu: fix inverted NUMA test in setup_pcpu_remap()

setup_percpu_remap() is for NUMA machines yet it bailed out with
-EINVAL if pcpu_need_numa().  Fix the inverted condition.

This problem was reported by David Miller and verified by Yinhai Lu.

Reported-by: David Miller <davem@davemloft.net>
Reported-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
LKML-Reference: <49D30469.8020006@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/arch/x86/kernel/setup_percpu.c b/arch/x86/kernel/setup_percpu.c
index 400331b..876b127 100644 (file)
--- a/arch/x86/kernel/setup_percpu.c
+++ b/arch/x86/kernel/setup_percpu.c
@@ -162,7 +162,7 @@ static ssize_t __init setup_pcpu_remap(size_t static_size)
         * If large page isn't supported, there's no benefit in doing
         * this.  Also, on non-NUMA, embedding is better.
         */
-       if (!cpu_has_pse || pcpu_need_numa())
+       if (!cpu_has_pse || !pcpu_need_numa())
                return -EINVAL;
 
        last = NULL;