x86: fix spin_is_contended()
The masked difference is what needs to be compared against 1, rather than the difference of masked values (which can be negative). Signed-off-by: NJan Beulich <jbeulich@novell.com> Acked-by: NNick Piggin <npiggin@suse.de> Cc: <stable@kernel.org> Signed-off-by: NIngo Molnar <mingo@elte.hu>
Showing
想要评论请 注册 或 登录