arch_timer.c (023796b9be3a77481cd5ee0b64a13a55bb0d5df4) arch_timer.c (0583fe478a7d93be2c814b7e50d6e81c287edfe8)
1/*
2 * linux/arch/arm/kernel/arch_timer.c
3 *
4 * Copyright (C) 2011 ARM Ltd.
5 * All Rights Reserved
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as

--- 25 unchanged lines hidden (view full) ---

34static void __init arch_timer_delay_timer_register(void)
35{
36 /* Use the architected timer for the delay loop. */
37 arch_delay_timer.read_current_timer = arch_timer_read_counter_long;
38 arch_delay_timer.freq = arch_timer_get_rate();
39 register_current_timer_delay(&arch_delay_timer);
40}
41
1/*
2 * linux/arch/arm/kernel/arch_timer.c
3 *
4 * Copyright (C) 2011 ARM Ltd.
5 * All Rights Reserved
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as

--- 25 unchanged lines hidden (view full) ---

34static void __init arch_timer_delay_timer_register(void)
35{
36 /* Use the architected timer for the delay loop. */
37 arch_delay_timer.read_current_timer = arch_timer_read_counter_long;
38 arch_delay_timer.freq = arch_timer_get_rate();
39 register_current_timer_delay(&arch_delay_timer);
40}
41
42int __init arch_timer_of_register(void)
42int __init arch_timer_arch_init(void)
43{
43{
44 int ret;
45
46 ret = arch_timer_init();
47 if (ret)
48 return ret;
49
50 arch_timer_delay_timer_register();
51
52 return 0;
53}
54
55int __init arch_timer_sched_clock_init(void)
56{
57 u32 arch_timer_rate = arch_timer_get_rate();
58
59 if (arch_timer_rate == 0)
60 return -ENXIO;
61
44 u32 arch_timer_rate = arch_timer_get_rate();
45
46 if (arch_timer_rate == 0)
47 return -ENXIO;
48
49 arch_timer_delay_timer_register();
50
62 /* Cache the sched_clock multiplier to save a divide in the hot path. */
63 sched_clock_mult = NSEC_PER_SEC / arch_timer_rate;
64 sched_clock_func = arch_timer_sched_clock;
65 pr_info("sched_clock: ARM arch timer >56 bits at %ukHz, resolution %uns\n",
66 arch_timer_rate / 1000, sched_clock_mult);
67
68 return 0;
69}
51 /* Cache the sched_clock multiplier to save a divide in the hot path. */
52 sched_clock_mult = NSEC_PER_SEC / arch_timer_rate;
53 sched_clock_func = arch_timer_sched_clock;
54 pr_info("sched_clock: ARM arch timer >56 bits at %ukHz, resolution %uns\n",
55 arch_timer_rate / 1000, sched_clock_mult);
56
57 return 0;
58}