Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm

Pull ARM updates from Russell King:
 "First ARM push of this merge window, post me coming back from holiday.
  This is what has been in linux-next for the last few weeks.  Not much
  to say which isn't described by the commit summaries."

* 'for-linus' of git://git.linaro.org/people/rmk/linux-arm: (32 commits)
  ARM: 7463/1: topology: Update cpu_power according to DT information
  ARM: 7462/1: topology: factorize the update of sibling masks
  ARM: 7461/1: topology: Add arch_scale_freq_power function
  ARM: 7456/1: ptrace: provide separate functions for tracing syscall {entry,exit}
  ARM: 7455/1: audit: move syscall auditing until after ptrace SIGTRAP handling
  ARM: 7454/1: entry: don't bother with syscall tracing on ret_from_fork path
  ARM: 7453/1: audit: only allow syscall auditing for pure EABI userspace
  ARM: 7452/1: delay: allow timer-based delay implementation to be selected
  ARM: 7451/1: arch timer: implement read_current_timer and get_cycles
  ARM: 7450/1: dcache: select DCACHE_WORD_ACCESS for little-endian ARMv6+ CPUs
  ARM: 7449/1: use generic strnlen_user and strncpy_from_user functions
  ARM: 7448/1: perf: remove arm_perf_pmu_ids global enumeration
  ARM: 7447/1: rwlocks: remove unused branch labels from trylock routines
  ARM: 7446/1: spinlock: use ticket algorithm for ARMv6+ locking implementation
  ARM: 7445/1: mm: update CONTEXTIDR register to contain PID of current process
  ARM: 7444/1: kernel: add arch-timer C3STOP feature
  ARM: 7460/1: remove asm/locks.h
  ARM: 7439/1: head.S: simplify initial page table mapping
  ARM: 7437/1: zImage: Allow DTB command line concatenation with ATAG_CMDLINE
  ARM: 7436/1: Do not map the vectors page as write-through on UP systems
  ...

1 files changed, 67 insertions, 0 deletions

diff --git a/arch/arm/lib/delay-loop.S b/arch/arm/lib/delay-loop.S
new file mode 100644
index 00000000000..36b668d8e12
--- /dev/null
+++ b/arch/arm/lib/delay-loop.S
@@ -0,0 +1,67 @@
+/*
+ *  linux/arch/arm/lib/delay.S
+ *
+ *  Copyright (C) 1995, 1996 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/linkage.h>
+#include <asm/assembler.h>
+#include <asm/delay.h>
+		.text
+
+.LC0:		.word	loops_per_jiffy
+.LC1:		.word	UDELAY_MULT
+
+/*
+ * r0  <= 2000
+ * lpj <= 0x01ffffff (max. 3355 bogomips)
+ * HZ  <= 1000
+ */
+
+ENTRY(__loop_udelay)
+		ldr	r2, .LC1
+		mul	r0, r2, r0
+ENTRY(__loop_const_udelay)			@ 0 <= r0 <= 0x7fffff06
+		mov	r1, #-1
+		ldr	r2, .LC0
+		ldr	r2, [r2]		@ max = 0x01ffffff
+		add	r0, r0, r1, lsr #32-14
+		mov	r0, r0, lsr #14		@ max = 0x0001ffff
+		add	r2, r2, r1, lsr #32-10
+		mov	r2, r2, lsr #10		@ max = 0x00007fff
+		mul	r0, r2, r0		@ max = 2^32-1
+		add	r0, r0, r1, lsr #32-6
+		movs	r0, r0, lsr #6
+		moveq	pc, lr
+
+/*
+ * loops = r0 * HZ * loops_per_jiffy / 1000000
+ */
+
+@ Delay routine
+ENTRY(__loop_delay)
+		subs	r0, r0, #1
+#if 0
+		movls	pc, lr
+		subs	r0, r0, #1
+		movls	pc, lr
+		subs	r0, r0, #1
+		movls	pc, lr
+		subs	r0, r0, #1
+		movls	pc, lr
+		subs	r0, r0, #1
+		movls	pc, lr
+		subs	r0, r0, #1
+		movls	pc, lr
+		subs	r0, r0, #1
+		movls	pc, lr
+		subs	r0, r0, #1
+#endif
+		bhi	__loop_delay
+		mov	pc, lr
+ENDPROC(__loop_udelay)
+ENDPROC(__loop_const_udelay)
+ENDPROC(__loop_delay)