arch/tile: fix bug in delay_backoff()
We were carefully computing a value to use for the number of loops
to spin for, and then ignoring it.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
diff --git a/arch/tile/lib/spinlock_common.h b/arch/tile/lib/spinlock_common.h
index c101098..6ac3750 100644
--- a/arch/tile/lib/spinlock_common.h
+++ b/arch/tile/lib/spinlock_common.h
@@ -60,5 +60,5 @@
loops += __insn_crc32_32(stack_pointer, get_cycles_low()) &
(loops - 1);
- relax(1 << exponent);
+ relax(loops);
}