ignore some file in git store

1 files changed, 0 insertions, 301 deletions

diff --git a/ANDROID_3.4.5/init/calibrate.c b/ANDROID_3.4.5/init/calibrate.c
deleted file mode 100644
index fda0a7b0..00000000
--- a/ANDROID_3.4.5/init/calibrate.c
+++ /dev/null
@@ -1,301 +0,0 @@
-/* calibrate.c: default delay calibration
- *
- * Excised from init/main.c
- *  Copyright (C) 1991, 1992  Linus Torvalds
- */
-
-#include <linux/jiffies.h>
-#include <linux/delay.h>
-#include <linux/init.h>
-#include <linux/timex.h>
-#include <linux/smp.h>
-#include <linux/percpu.h>
-
-unsigned long lpj_fine;
-unsigned long preset_lpj;
-static int __init lpj_setup(char *str)
-{
-	preset_lpj = simple_strtoul(str,NULL,0);
-	return 1;
-}
-
-__setup("lpj=", lpj_setup);
-
-#ifdef ARCH_HAS_READ_CURRENT_TIMER
-
-/* This routine uses the read_current_timer() routine and gets the
- * loops per jiffy directly, instead of guessing it using delay().
- * Also, this code tries to handle non-maskable asynchronous events
- * (like SMIs)
- */
-#define DELAY_CALIBRATION_TICKS			((HZ < 100) ? 1 : (HZ/100))
-#define MAX_DIRECT_CALIBRATION_RETRIES		5
-
-static unsigned long __cpuinit calibrate_delay_direct(void)
-{
-	unsigned long pre_start, start, post_start;
-	unsigned long pre_end, end, post_end;
-	unsigned long start_jiffies;
-	unsigned long timer_rate_min, timer_rate_max;
-	unsigned long good_timer_sum = 0;
-	unsigned long good_timer_count = 0;
-	unsigned long measured_times[MAX_DIRECT_CALIBRATION_RETRIES];
-	int max = -1; /* index of measured_times with max/min values or not set */
-	int min = -1;
-	int i;
-
-	if (read_current_timer(&pre_start) < 0 )
-		return 0;
-
-	/*
-	 * A simple loop like
-	 *	while ( jiffies < start_jiffies+1)
-	 *		start = read_current_timer();
-	 * will not do. As we don't really know whether jiffy switch
-	 * happened first or timer_value was read first. And some asynchronous
-	 * event can happen between these two events introducing errors in lpj.
-	 *
-	 * So, we do
-	 * 1. pre_start <- When we are sure that jiffy switch hasn't happened
-	 * 2. check jiffy switch
-	 * 3. start <- timer value before or after jiffy switch
-	 * 4. post_start <- When we are sure that jiffy switch has happened
-	 *
-	 * Note, we don't know anything about order of 2 and 3.
-	 * Now, by looking at post_start and pre_start difference, we can
-	 * check whether any asynchronous event happened or not
-	 */
-
-	for (i = 0; i < MAX_DIRECT_CALIBRATION_RETRIES; i++) {
-		pre_start = 0;
-		read_current_timer(&start);
-		start_jiffies = jiffies;
-		while (time_before_eq(jiffies, start_jiffies + 1)) {
-			pre_start = start;
-			read_current_timer(&start);
-		}
-		read_current_timer(&post_start);
-
-		pre_end = 0;
-		end = post_start;
-		while (time_before_eq(jiffies, start_jiffies + 1 +
-					       DELAY_CALIBRATION_TICKS)) {
-			pre_end = end;
-			read_current_timer(&end);
-		}
-		read_current_timer(&post_end);
-
-		timer_rate_max = (post_end - pre_start) /
-					DELAY_CALIBRATION_TICKS;
-		timer_rate_min = (pre_end - post_start) /
-					DELAY_CALIBRATION_TICKS;
-
-		/*
-		 * If the upper limit and lower limit of the timer_rate is
-		 * >= 12.5% apart, redo calibration.
-		 */
-		if (start >= post_end)
-			printk(KERN_NOTICE "calibrate_delay_direct() ignoring "
-					"timer_rate as we had a TSC wrap around"
-					" start=%lu >=post_end=%lu\n",
-				start, post_end);
-		if (start < post_end && pre_start != 0 && pre_end != 0 &&
-		    (timer_rate_max - timer_rate_min) < (timer_rate_max >> 3)) {
-			good_timer_count++;
-			good_timer_sum += timer_rate_max;
-			measured_times[i] = timer_rate_max;
-			if (max < 0 || timer_rate_max > measured_times[max])
-				max = i;
-			if (min < 0 || timer_rate_max < measured_times[min])
-				min = i;
-		} else
-			measured_times[i] = 0;
-
-	}
-
-	/*
-	 * Find the maximum & minimum - if they differ too much throw out the
-	 * one with the largest difference from the mean and try again...
-	 */
-	while (good_timer_count > 1) {
-		unsigned long estimate;
-		unsigned long maxdiff;
-
-		/* compute the estimate */
-		estimate = (good_timer_sum/good_timer_count);
-		maxdiff = estimate >> 3;
-
-		/* if range is within 12% let's take it */
-		if ((measured_times[max] - measured_times[min]) < maxdiff)
-			return estimate;
-
-		/* ok - drop the worse value and try again... */
-		good_timer_sum = 0;
-		good_timer_count = 0;
-		if ((measured_times[max] - estimate) <
-				(estimate - measured_times[min])) {
-			printk(KERN_NOTICE "calibrate_delay_direct() dropping "
-					"min bogoMips estimate %d = %lu\n",
-				min, measured_times[min]);
-			measured_times[min] = 0;
-			min = max;
-		} else {
-			printk(KERN_NOTICE "calibrate_delay_direct() dropping "
-					"max bogoMips estimate %d = %lu\n",
-				max, measured_times[max]);
-			measured_times[max] = 0;
-			max = min;
-		}
-
-		for (i = 0; i < MAX_DIRECT_CALIBRATION_RETRIES; i++) {
-			if (measured_times[i] == 0)
-				continue;
-			good_timer_count++;
-			good_timer_sum += measured_times[i];
-			if (measured_times[i] < measured_times[min])
-				min = i;
-			if (measured_times[i] > measured_times[max])
-				max = i;
-		}
-
-	}
-
-	printk(KERN_NOTICE "calibrate_delay_direct() failed to get a good "
-	       "estimate for loops_per_jiffy.\nProbably due to long platform "
-		"interrupts. Consider using \"lpj=\" boot option.\n");
-	return 0;
-}
-#else
-static unsigned long __cpuinit calibrate_delay_direct(void) {return 0;}
-#endif
-
-/*
- * This is the number of bits of precision for the loops_per_jiffy.  Each
- * time we refine our estimate after the first takes 1.5/HZ seconds, so try
- * to start with a good estimate.
- * For the boot cpu we can skip the delay calibration and assign it a value
- * calculated based on the timer frequency.
- * For the rest of the CPUs we cannot assume that the timer frequency is same as
- * the cpu frequency, hence do the calibration for those.
- */
-#define LPS_PREC 8
-
-static unsigned long __cpuinit calibrate_delay_converge(void)
-{
-	/* First stage - slowly accelerate to find initial bounds */
-	unsigned long lpj, lpj_base, ticks, loopadd, loopadd_base, chop_limit;
-	int trials = 0, band = 0, trial_in_band = 0;
-
-	lpj = (1<<12);
-
-	/* wait for "start of" clock tick */
-	ticks = jiffies;
-	while (ticks == jiffies)
-		; /* nothing */
-	/* Go .. */
-	ticks = jiffies;
-	do {
-		if (++trial_in_band == (1<<band)) {
-			++band;
-			trial_in_band = 0;
-		}
-		__delay(lpj * band);
-		trials += band;
-	} while (ticks == jiffies);
-	/*
-	 * We overshot, so retreat to a clear underestimate. Then estimate
-	 * the largest likely undershoot. This defines our chop bounds.
-	 */
-	trials -= band;
-	loopadd_base = lpj * band;
-	lpj_base = lpj * trials;
-
-recalibrate:
-	lpj = lpj_base;
-	loopadd = loopadd_base;
-
-	/*
-	 * Do a binary approximation to get lpj set to
-	 * equal one clock (up to LPS_PREC bits)
-	 */
-	chop_limit = lpj >> LPS_PREC;
-	while (loopadd > chop_limit) {
-		lpj += loopadd;
-		ticks = jiffies;
-		while (ticks == jiffies)
-			; /* nothing */
-		ticks = jiffies;
-		__delay(lpj);
-		if (jiffies != ticks)	/* longer than 1 tick */
-			lpj -= loopadd;
-		loopadd >>= 1;
-	}
-	/*
-	 * If we incremented every single time possible, presume we've
-	 * massively underestimated initially, and retry with a higher
-	 * start, and larger range. (Only seen on x86_64, due to SMIs)
-	 */
-	if (lpj + loopadd * 2 == lpj_base + loopadd_base * 2) {
-		lpj_base = lpj;
-		loopadd_base <<= 2;
-		goto recalibrate;
-	}
-
-	return lpj;
-}
-
-static DEFINE_PER_CPU(unsigned long, cpu_loops_per_jiffy) = { 0 };
-
-/*
- * Check if cpu calibration delay is already known. For example,
- * some processors with multi-core sockets may have all cores
- * with the same calibration delay.
- *
- * Architectures should override this function if a faster calibration
- * method is available.
- */
-unsigned long __attribute__((weak)) __cpuinit calibrate_delay_is_known(void)
-{
-	return 0;
-}
-
-void __cpuinit calibrate_delay(void)
-{
-	unsigned long lpj;
-	static bool printed;
-	int this_cpu = smp_processor_id();
-
-	if (per_cpu(cpu_loops_per_jiffy, this_cpu)) {
-		lpj = per_cpu(cpu_loops_per_jiffy, this_cpu);
-		if (!printed)
-			pr_info("Calibrating delay loop (skipped) "
-				"already calibrated this CPU");
-	} else if (preset_lpj) {
-		lpj = preset_lpj;
-		if (!printed)
-			pr_info("Calibrating delay loop (skipped) "
-				"preset value.. ");
-	} else if ((!printed) && lpj_fine) {
-		lpj = lpj_fine;
-		pr_info("Calibrating delay loop (skipped), "
-			"value calculated using timer frequency.. ");
-	} else if ((lpj = calibrate_delay_is_known())) {
-		;
-	} else if ((lpj = calibrate_delay_direct()) != 0) {
-		if (!printed)
-			pr_info("Calibrating delay using timer "
-				"specific routine.. ");
-	} else {
-		if (!printed)
-			pr_info("Calibrating delay loop... ");
-		lpj = calibrate_delay_converge();
-	}
-	per_cpu(cpu_loops_per_jiffy, this_cpu) = lpj;
-	if (!printed)
-		pr_cont("%lu.%02lu BogoMIPS (lpj=%lu)\n",
-			lpj/(500000/HZ),
-			(lpj/(5000/HZ)) % 100, lpj);
-
-	loops_per_jiffy = lpj;
-	printed = true;
-}