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由 Ingo Molnar 提交于
add atomic_xchg() to all the architectures. Needed by the new mutex code. Signed-off-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NArjan van de Ven <arjan@infradead.org>
ffbf670f
add atomic_xchg() to all the architectures. Needed by the new mutex code. Signed-off-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NArjan van de Ven <arjan@infradead.org>