提交 4cfea5a7 编写于 作者: D David S. Miller

[SPARC64]: Fix atomic backoff limit.

4096 will not fit into the immediate field of a compare instruction,
in fact it will end up being -4096 causing the check to fail every
time and thus disabling backoff.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 f0e98c38
......@@ -12,7 +12,8 @@
mov reg, tmp; \
88: brnz,pt tmp, 88b; \
sub tmp, 1, tmp; \
cmp reg, BACKOFF_LIMIT; \
set BACKOFF_LIMIT, tmp; \
cmp reg, tmp; \
bg,pn %xcc, label; \
nop; \
ba,pt %xcc, label; \
......
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