ed9831407b
pm_idle() on openrisc was dead code. Signed-off-by: Len Brown <len.brown@intel.com> Cc: linux@lists.openrisc.net
73 lines
1.8 KiB
C
73 lines
1.8 KiB
C
/*
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* OpenRISC idle.c
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*
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* Linux architectural port borrowing liberally from similar works of
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* others. All original copyrights apply as per the original source
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* declaration.
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*
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* Modifications for the OpenRISC architecture:
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* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
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* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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* Idle daemon for or32. Idle daemon will handle any action
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* that needs to be taken when the system becomes idle.
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*/
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#include <linux/errno.h>
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#include <linux/sched.h>
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#include <linux/kernel.h>
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#include <linux/mm.h>
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#include <linux/smp.h>
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#include <linux/stddef.h>
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#include <linux/unistd.h>
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#include <linux/ptrace.h>
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#include <linux/slab.h>
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#include <linux/tick.h>
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#include <asm/pgtable.h>
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#include <asm/uaccess.h>
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#include <asm/io.h>
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#include <asm/processor.h>
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#include <asm/mmu.h>
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#include <asm/cache.h>
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#include <asm/pgalloc.h>
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void (*powersave) (void) = NULL;
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void cpu_idle(void)
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{
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set_thread_flag(TIF_POLLING_NRFLAG);
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/* endless idle loop with no priority at all */
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while (1) {
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tick_nohz_idle_enter();
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rcu_idle_enter();
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while (!need_resched()) {
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check_pgt_cache();
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rmb();
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clear_thread_flag(TIF_POLLING_NRFLAG);
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local_irq_disable();
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/* Don't trace irqs off for idle */
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stop_critical_timings();
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if (!need_resched() && powersave != NULL)
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powersave();
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start_critical_timings();
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local_irq_enable();
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set_thread_flag(TIF_POLLING_NRFLAG);
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}
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rcu_idle_exit();
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tick_nohz_idle_exit();
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preempt_enable_no_resched();
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schedule();
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preempt_disable();
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}
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}
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