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authorThomas Gleixner <tglx@linutronix.de>2013-03-21 22:49:54 +0100
committerThomas Gleixner <tglx@linutronix.de>2013-04-08 17:39:27 +0200
commit6862c05ce4bc59ac52165df66f2a55ad692ef941 (patch)
treedbd52f5b442153959253c6bdbfa25b7e9d406f2e /arch/openrisc/kernel
parentaf695cd931edab7f202fb616d69d4b746c5d6912 (diff)
downloadlinux-6862c05ce4bc59ac52165df66f2a55ad692ef941.tar.gz
openrisc: Use generic idle loop
Idle poller with an extra check_pgt_cache() invocation. Use the core code. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Paul McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Reviewed-by: Cc: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Cc: Magnus Damm <magnus.damm@gmail.com> Link: http://lkml.kernel.org/r/20130321215234.886530981@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/openrisc/kernel')
-rw-r--r--arch/openrisc/kernel/Makefile2
-rw-r--r--arch/openrisc/kernel/idle.c73
2 files changed, 1 insertions, 74 deletions
diff --git a/arch/openrisc/kernel/Makefile b/arch/openrisc/kernel/Makefile
index 35f92ce51c2..ec6d9d37cef 100644
--- a/arch/openrisc/kernel/Makefile
+++ b/arch/openrisc/kernel/Makefile
@@ -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
diff --git a/arch/openrisc/kernel/idle.c b/arch/openrisc/kernel/idle.c
deleted file mode 100644
index 5e8a3b6d6bc..00000000000
--- a/arch/openrisc/kernel/idle.c
+++ /dev/null
@@ -1,73 +0,0 @@
-/*
- * 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();
- }
-}