Release 4.14 arch/powerpc/kernel/idle.c
/*
* Idle daemon for PowerPC. Idle daemon will handle any action
* that needs to be taken when the system becomes idle.
*
* Originally written by Cort Dougan (cort@cs.nmt.edu).
* Subsequent 32-bit hacking by Tom Rini, Armin Kuster,
* Paul Mackerras and others.
*
* iSeries supported added by Mike Corrigan <mikejc@us.ibm.com>
*
* Additional shared processor, SMT, and firmware support
* Copyright (c) 2003 Dave Engebretsen <engebret@us.ibm.com>
*
* 32-bit and 64-bit versions merged by Paul Mackerras <paulus@samba.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <linux/sched.h>
#include <linux/kernel.h>
#include <linux/smp.h>
#include <linux/cpu.h>
#include <linux/sysctl.h>
#include <linux/tick.h>
#include <asm/processor.h>
#include <asm/cputable.h>
#include <asm/time.h>
#include <asm/machdep.h>
#include <asm/runlatch.h>
#include <asm/smp.h>
unsigned long cpuidle_disable = IDLE_NO_OVERRIDE;
EXPORT_SYMBOL(cpuidle_disable);
static int __init powersave_off(char *arg)
{
ppc_md.power_save = NULL;
cpuidle_disable = IDLE_POWERSAVE_OFF;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Arnd Bergmann | 20 | 83.33% | 1 | 50.00% |
| Deepthi Dharwar | 4 | 16.67% | 1 | 50.00% |
| Total | 24 | 100.00% | 2 | 100.00% |
__setup("powersave=off", powersave_off);
#ifdef CONFIG_HOTPLUG_CPU
void arch_cpu_idle_dead(void)
{
sched_preempt_enable_no_resched();
cpu_die();
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andrew Morton | 4 | 30.77% | 1 | 16.67% |
| Thomas Gleixner | 4 | 30.77% | 1 | 16.67% |
| Frédéric Weisbecker | 3 | 23.08% | 2 | 33.33% |
| Tony Breeds | 1 | 7.69% | 1 | 16.67% |
| Paul Mackerras | 1 | 7.69% | 1 | 16.67% |
| Total | 13 | 100.00% | 6 | 100.00% |
#endif
void arch_cpu_idle(void)
{
ppc64_runlatch_off();
if (ppc_md.power_save) {
ppc_md.power_save();
/*
* Some power_save functions return with
* interrupts enabled, some don't.
*/
if (irqs_disabled())
local_irq_enable();
} else {
local_irq_enable();
/*
* Go into low thread priority and possibly
* low power mode.
*/
HMT_low();
HMT_very_low();
}
HMT_medium();
ppc64_runlatch_on();
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Paul Mackerras | 20 | 39.22% | 1 | 10.00% |
| Thomas Gleixner | 10 | 19.61% | 1 | 10.00% |
| Benjamin Herrenschmidt | 9 | 17.65% | 2 | 20.00% |
| Anton Blanchard | 9 | 17.65% | 4 | 40.00% |
| Nicholas Piggin | 2 | 3.92% | 1 | 10.00% |
| Andrew Morton | 1 | 1.96% | 1 | 10.00% |
| Total | 51 | 100.00% | 10 | 100.00% |
int powersave_nap;
#ifdef CONFIG_SYSCTL
/*
* Register the sysctl to set/clear powersave_nap.
*/
static struct ctl_table powersave_nap_ctl_table[] = {
{
.procname = "powersave-nap",
.data = &powersave_nap,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec,
},
{}
};
static struct ctl_table powersave_nap_sysctl_root[] = {
{
.procname = "kernel",
.mode = 0555,
.child = powersave_nap_ctl_table,
},
{}
};
static int __init
register_powersave_nap_sysctl(void)
{
register_sysctl_table(powersave_nap_sysctl_root);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Anton Blanchard | 17 | 100.00% | 1 | 100.00% |
| Total | 17 | 100.00% | 1 | 100.00% |
__initcall(register_powersave_nap_sysctl);
#endif
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Anton Blanchard | 111 | 44.94% | 5 | 21.74% |
| Arnd Bergmann | 27 | 10.93% | 1 | 4.35% |
| Paul Mackerras | 25 | 10.12% | 3 | 13.04% |
| Thomas Gleixner | 19 | 7.69% | 1 | 4.35% |
| Deepthi Dharwar | 15 | 6.07% | 1 | 4.35% |
| Eric W. Biedermann | 14 | 5.67% | 1 | 4.35% |
| Andrew Morton | 10 | 4.05% | 2 | 8.70% |
| Benjamin Herrenschmidt | 9 | 3.64% | 2 | 8.70% |
| David Howells | 5 | 2.02% | 1 | 4.35% |
| Tony Breeds | 4 | 1.62% | 1 | 4.35% |
| Frédéric Weisbecker | 3 | 1.21% | 2 | 8.70% |
| Nicholas Piggin | 2 | 0.81% | 1 | 4.35% |
| Joe Perches | 2 | 0.81% | 1 | 4.35% |
| Alexey Dobriyan | 1 | 0.40% | 1 | 4.35% |
| Total | 247 | 100.00% | 23 | 100.00% |
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