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Diffstat (limited to 'arch/arm/kernel/sched_clock.c')
-rw-r--r--arch/arm/kernel/sched_clock.c74
1 files changed, 0 insertions, 74 deletions
diff --git a/arch/arm/kernel/sched_clock.c b/arch/arm/kernel/sched_clock.c
deleted file mode 100644
index 9a46370fe9d..00000000000
--- a/arch/arm/kernel/sched_clock.c
+++ /dev/null
@@ -1,74 +0,0 @@
-/*
- * sched_clock.c: support for extending counters to full 64-bit ns counter
- *
- * 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/clocksource.h>
-#include <linux/init.h>
-#include <linux/jiffies.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/timer.h>
-
-#include <asm/sched_clock.h>
-
-static void sched_clock_poll(unsigned long wrap_ticks);
-static DEFINE_TIMER(sched_clock_timer, sched_clock_poll, 0, 0);
-static void (*sched_clock_update_fn)(void);
-
-static void sched_clock_poll(unsigned long wrap_ticks)
-{
- mod_timer(&sched_clock_timer, round_jiffies(jiffies + wrap_ticks));
- sched_clock_update_fn();
-}
-
-void __init init_sched_clock(struct clock_data *cd, void (*update)(void),
- unsigned int clock_bits, unsigned long rate)
-{
- unsigned long r, w;
- u64 res, wrap;
- char r_unit;
-
- sched_clock_update_fn = update;
-
- /* calculate the mult/shift to convert counter ticks to ns. */
- clocks_calc_mult_shift(&cd->mult, &cd->shift, rate, NSEC_PER_SEC, 0);
-
- r = rate;
- if (r >= 4000000) {
- r /= 1000000;
- r_unit = 'M';
- } else {
- r /= 1000;
- r_unit = 'k';
- }
-
- /* calculate how many ns until we wrap */
- wrap = cyc_to_ns((1ULL << clock_bits) - 1, cd->mult, cd->shift);
- do_div(wrap, NSEC_PER_MSEC);
- w = wrap;
-
- /* calculate the ns resolution of this counter */
- res = cyc_to_ns(1ULL, cd->mult, cd->shift);
- pr_info("sched_clock: %u bits at %lu%cHz, resolution %lluns, wraps every %lums\n",
- clock_bits, r, r_unit, res, w);
-
- /*
- * Start the timer to keep sched_clock() properly updated and
- * sets the initial epoch.
- */
- sched_clock_timer.data = msecs_to_jiffies(w - (w / 10));
- update();
-
- /*
- * Ensure that sched_clock() starts off at 0ns
- */
- cd->epoch_ns = 0;
-}
-
-void __init sched_clock_postinit(void)
-{
- sched_clock_poll(sched_clock_timer.data);
-}