Release 4.11 arch/c6x/kernel/time.c
/*
* Port on Texas Instruments TMS320C6x architecture
*
* Copyright (C) 2004, 2009, 2010, 2011 Texas Instruments Incorporated
* Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com)
*
* 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/kernel.h>
#include <linux/clocksource.h>
#include <linux/errno.h>
#include <linux/sched.h>
#include <linux/param.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/interrupt.h>
#include <linux/timex.h>
#include <linux/profile.h>
#include <asm/special_insns.h>
#include <asm/timer64.h>
static u32 sched_clock_multiplier;
#define SCHED_CLOCK_SHIFT 16
static u64 tsc_read(struct clocksource *cs)
{
return get_cycles();
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Aurelien Jacquiot | 14 | 93.33% | 1 | 50.00% |
| Thomas Gleixner | 1 | 6.67% | 1 | 50.00% |
| Total | 15 | 100.00% | 2 | 100.00% |
static struct clocksource clocksource_tsc = {
.name = "timestamp",
.rating = 300,
.read = tsc_read,
.mask = CLOCKSOURCE_MASK(64),
.flags = CLOCK_SOURCE_IS_CONTINUOUS,
};
/*
* scheduler clock - returns current time in nanoseconds.
*/
u64 sched_clock(void)
{
u64 tsc = get_cycles();
return (tsc * sched_clock_multiplier) >> SCHED_CLOCK_SHIFT;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Aurelien Jacquiot | 22 | 100.00% | 1 | 100.00% |
| Total | 22 | 100.00% | 1 | 100.00% |
void __init time_init(void)
{
u64 tmp = (u64)NSEC_PER_SEC << SCHED_CLOCK_SHIFT;
do_div(tmp, c6x_core_freq);
sched_clock_multiplier = tmp;
clocksource_register_hz(&clocksource_tsc, c6x_core_freq);
/* write anything into TSCL to enable counting */
set_creg(TSCL, 0);
/* probe for timer64 event timer */
timer64_init();
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Aurelien Jacquiot | 48 | 97.96% | 1 | 50.00% |
| Nishanth Menon | 1 | 2.04% | 1 | 50.00% |
| Total | 49 | 100.00% | 2 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Aurelien Jacquiot | 162 | 97.01% | 1 | 25.00% |
| David Howells | 3 | 1.80% | 1 | 25.00% |
| Nishanth Menon | 1 | 0.60% | 1 | 25.00% |
| Thomas Gleixner | 1 | 0.60% | 1 | 25.00% |
| Total | 167 | 100.00% | 4 | 100.00% |
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