1 files changed, 0 insertions, 171 deletions

diff --git a/ANDROID_3.4.5/arch/powerpc/kernel/smp-tbsync.c b/ANDROID_3.4.5/arch/powerpc/kernel/smp-tbsync.c
deleted file mode 100644
index 640de836..00000000
--- a/ANDROID_3.4.5/arch/powerpc/kernel/smp-tbsync.c
+++ /dev/null
@@ -1,171 +0,0 @@
-/*
- * Smp timebase synchronization for ppc.
- *
- * Copyright (C) 2003 Samuel Rydh (samuel@ibrium.se)
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/smp.h>
-#include <linux/unistd.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/atomic.h>
-#include <asm/smp.h>
-#include <asm/time.h>
-
-#define NUM_ITER		300
-
-enum {
-	kExit=0, kSetAndTest, kTest
-};
-
-static struct {
-	volatile u64		tb;
-	volatile u64		mark;
-	volatile int		cmd;
-	volatile int		handshake;
-	int			filler[2];
-
-	volatile int		ack;
-	int			filler2[7];
-
-	volatile int		race_result;
-} *tbsync;
-
-static volatile int		running;
-
-static void __devinit enter_contest(u64 mark, long add)
-{
-	while (get_tb() < mark)
-		tbsync->race_result = add;
-}
-
-void __devinit smp_generic_take_timebase(void)
-{
-	int cmd;
-	u64 tb;
-	unsigned long flags;
-
-	local_irq_save(flags);
-	while (!running)
-		barrier();
-	rmb();
-
-	for (;;) {
-		tbsync->ack = 1;
-		while (!tbsync->handshake)
-			barrier();
-		rmb();
-
-		cmd = tbsync->cmd;
-		tb = tbsync->tb;
-		mb();
-		tbsync->ack = 0;
-		if (cmd == kExit)
-			break;
-
-		while (tbsync->handshake)
-			barrier();
-		if (cmd == kSetAndTest)
-			set_tb(tb >> 32, tb & 0xfffffffful);
-		enter_contest(tbsync->mark, -1);
-	}
-	local_irq_restore(flags);
-}
-
-static int __devinit start_contest(int cmd, long offset, int num)
-{
-	int i, score=0;
-	u64 tb;
-	u64 mark;
-
-	tbsync->cmd = cmd;
-
-	local_irq_disable();
-	for (i = -3; i < num; ) {
-		tb = get_tb() + 400;
-		tbsync->tb = tb + offset;
-		tbsync->mark = mark = tb + 400;
-
-		wmb();
-
-		tbsync->handshake = 1;
-		while (tbsync->ack)
-			barrier();
-
-		while (get_tb() <= tb)
-			barrier();
-		tbsync->handshake = 0;
-		enter_contest(mark, 1);
-
-		while (!tbsync->ack)
-			barrier();
-
-		if (i++ > 0)
-			score += tbsync->race_result;
-	}
-	local_irq_enable();
-	return score;
-}
-
-void __devinit smp_generic_give_timebase(void)
-{
-	int i, score, score2, old, min=0, max=5000, offset=1000;
-
-	pr_debug("Software timebase sync\n");
-
-	/* if this fails then this kernel won't work anyway... */
-	tbsync = kzalloc( sizeof(*tbsync), GFP_KERNEL );
-	mb();
-	running = 1;
-
-	while (!tbsync->ack)
-		barrier();
-
-	pr_debug("Got ack\n");
-
-	/* binary search */
-	for (old = -1; old != offset ; offset = (min+max) / 2) {
-		score = start_contest(kSetAndTest, offset, NUM_ITER);
-
-		pr_debug("score %d, offset %d\n", score, offset );
-
-		if( score > 0 )
-			max = offset;
-		else
-			min = offset;
-		old = offset;
-	}
-	score = start_contest(kSetAndTest, min, NUM_ITER);
-	score2 = start_contest(kSetAndTest, max, NUM_ITER);
-
-	pr_debug("Min %d (score %d), Max %d (score %d)\n",
-		 min, score, max, score2);
-	score = abs(score);
-	score2 = abs(score2);
-	offset = (score < score2) ? min : max;
-
-	/* guard against inaccurate mttb */
-	for (i = 0; i < 10; i++) {
-		start_contest(kSetAndTest, offset, NUM_ITER/10);
-
-		if ((score2 = start_contest(kTest, offset, NUM_ITER)) < 0)
-			score2 = -score2;
-		if (score2 <= score || score2 < 20)
-			break;
-	}
-	pr_debug("Final offset: %d (%d/%d)\n", offset, score2, NUM_ITER );
-
-	/* exiting */
-	tbsync->cmd = kExit;
-	wmb();
-	tbsync->handshake = 1;
-	while (tbsync->ack)
-		barrier();
-	tbsync->handshake = 0;
-	kfree(tbsync);
-	tbsync = NULL;
-	running = 0;
-}