1 files changed, 0 insertions, 64 deletions
diff --git a/arch/tile/lib/spinlock_common.h b/arch/tile/lib/spinlock_common.h
deleted file mode 100644
index 6ac37509faca..000000000000
--- a/arch/tile/lib/spinlock_common.h
+++ /dev/null
@@ -1,64 +0,0 @@
-/*
- * Copyright 2010 Tilera Corporation. All Rights Reserved.
- *
- *   This program is free software; you can redistribute it and/or
- *   modify it under the terms of the GNU General Public License
- *   as published by the Free Software Foundation, version 2.
- *
- *   This program is distributed in the hope that it will be useful, but
- *   WITHOUT ANY WARRANTY; without even the implied warranty of
- *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- *   NON INFRINGEMENT.  See the GNU General Public License for
- *   more details.
- * This file is included into spinlock_32.c or _64.c.
- */
-
-/*
- * The mfspr in __spinlock_relax() is 5 or 6 cycles plus 2 for loop
- * overhead.
- */
-#ifdef __tilegx__
-#define CYCLES_PER_RELAX_LOOP 7
-#else
-#define CYCLES_PER_RELAX_LOOP 8
-#endif
-
-/*
- * Idle the core for CYCLES_PER_RELAX_LOOP * iterations cycles.
- */
-static inline void
-relax(int iterations)
-{
-	for (/*above*/; iterations > 0; iterations--)
-		__insn_mfspr(SPR_PASS);
-	barrier();
-}
-
-/* Perform bounded exponential backoff.*/
-static void delay_backoff(int iterations)
-{
-	u32 exponent, loops;
-
-	/*
-	 * 2^exponent is how many times we go around the loop,
-	 * which takes 8 cycles.  We want to start with a 16- to 31-cycle
-	 * loop, so we need to go around minimum 2 = 2^1 times, so we
-	 * bias the original value up by 1.
-	 */
-	exponent = iterations + 1;
-
-	/*
-	 * Don't allow exponent to exceed 7, so we have 128 loops,
-	 * or 1,024 (to 2,047) cycles, as our maximum.
-	 */
-	if (exponent > 8)
-		exponent = 8;
-
-	loops = 1 << exponent;
-
-	/* Add a randomness factor so two cpus never get in lock step. */
-	loops += __insn_crc32_32(stack_pointer, get_cycles_low()) &
-		(loops - 1);
-
-	relax(loops);
-}