openrisc: Use generic idle loop (6862c05c) · Commits · 戴 / test

arch/openrisc/Kconfig

+1 −0

Original line number	Diff line number	Diff line
		@@ -21,6 +21,7 @@ config OPENRISC
		select GENERIC_CLOCKEVENTS
		select GENERIC_STRNCPY_FROM_USER
		select GENERIC_STRNLEN_USER
		select GENERIC_IDLE_LOOP
		select MODULES_USE_ELF_RELA

		config MMU

arch/openrisc/kernel/Makefile

+1 −1

Original line number	Diff line number	Diff line
		@@ -4,7 +4,7 @@

		extra-y := head.o vmlinux.lds

		obj-y := setup.o idle.o or32_ksyms.o process.o dma.o \
		obj-y := setup.o or32_ksyms.o process.o dma.o \
		traps.o time.o irq.o entry.o ptrace.o signal.o \
		sys_call_table.o

arch/openrisc/kernel/idle.c

deleted100644 → 0

+0 −73

Original line number	Diff line number	Diff line
		/*
		* OpenRISC idle.c
		*
		* Linux architectural port borrowing liberally from similar works of
		* others. All original copyrights apply as per the original source
		* declaration.
		*
		* Modifications for the OpenRISC architecture:
		* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
		* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
		*
		* 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.
		*
		* Idle daemon for or32. Idle daemon will handle any action
		* that needs to be taken when the system becomes idle.
		*/

		#include <linux/errno.h>
		#include <linux/sched.h>
		#include <linux/kernel.h>
		#include <linux/mm.h>
		#include <linux/smp.h>
		#include <linux/stddef.h>
		#include <linux/unistd.h>
		#include <linux/ptrace.h>
		#include <linux/slab.h>
		#include <linux/tick.h>

		#include <asm/pgtable.h>
		#include <asm/uaccess.h>
		#include <asm/io.h>
		#include <asm/processor.h>
		#include <asm/mmu.h>
		#include <asm/cache.h>
		#include <asm/pgalloc.h>

		void (*powersave) (void) = NULL;

		void cpu_idle(void)
		{
		set_thread_flag(TIF_POLLING_NRFLAG);

		/* endless idle loop with no priority at all */
		while (1) {
		tick_nohz_idle_enter();
		rcu_idle_enter();

		while (!need_resched()) {
		check_pgt_cache();
		rmb();

		clear_thread_flag(TIF_POLLING_NRFLAG);

		local_irq_disable();
		/* Don't trace irqs off for idle */
		stop_critical_timings();
		if (!need_resched() && powersave != NULL)
		powersave();
		start_critical_timings();
		local_irq_enable();
		set_thread_flag(TIF_POLLING_NRFLAG);
		}

		rcu_idle_exit();
		tick_nohz_idle_exit();
		preempt_enable_no_resched();
		schedule();
		preempt_disable();
		}
		}

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