sh: Split out the idle loop for reuse between _32/_64 variants.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/kernel/Makefile_32 b/arch/sh/kernel/Makefile_32
index d3f2726..d9df9e5 100644
--- a/arch/sh/kernel/Makefile_32
+++ b/arch/sh/kernel/Makefile_32
@@ -9,7 +9,7 @@
CFLAGS_REMOVE_ftrace.o = -pg
endif
-obj-y := debugtraps.o disassemble.o io.o io_generic.o irq.o \
+obj-y := debugtraps.o disassemble.o idle.o io.o io_generic.o irq.o \
machvec.o process_32.o ptrace_32.o setup.o signal_32.o \
sys_sh.o sys_sh32.o syscalls_32.o time_32.o topology.o \
traps.o traps_32.o
diff --git a/arch/sh/kernel/Makefile_64 b/arch/sh/kernel/Makefile_64
index c97660b..4304b25 100644
--- a/arch/sh/kernel/Makefile_64
+++ b/arch/sh/kernel/Makefile_64
@@ -1,6 +1,6 @@
extra-y := head_64.o init_task.o vmlinux.lds
-obj-y := debugtraps.o io.o io_generic.o irq.o machvec.o process_64.o \
+obj-y := debugtraps.o idle.o io.o io_generic.o irq.o machvec.o process_64.o \
ptrace_64.o setup.o signal_64.o sys_sh.o sys_sh64.o \
syscalls_64.o time_64.o topology.o traps.o traps_64.o
diff --git a/arch/sh/kernel/idle.c b/arch/sh/kernel/idle.c
new file mode 100644
index 0000000..fe59ccf
--- /dev/null
+++ b/arch/sh/kernel/idle.c
@@ -0,0 +1,81 @@
+/*
+ * The idle loop for all SuperH platforms.
+ *
+ * Copyright (C) 2002 - 2008 Paul Mundt
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/pm.h>
+#include <linux/tick.h>
+#include <linux/preempt.h>
+#include <linux/thread_info.h>
+#include <linux/irqflags.h>
+#include <asm/pgalloc.h>
+#include <asm/system.h>
+#include <asm/atomic.h>
+
+static int hlt_counter;
+void (*pm_idle)(void);
+void (*pm_power_off)(void);
+EXPORT_SYMBOL(pm_power_off);
+
+static int __init nohlt_setup(char *__unused)
+{
+ hlt_counter = 1;
+ return 1;
+}
+__setup("nohlt", nohlt_setup);
+
+static int __init hlt_setup(char *__unused)
+{
+ hlt_counter = 0;
+ return 1;
+}
+__setup("hlt", hlt_setup);
+
+static void default_idle(void)
+{
+ if (!hlt_counter) {
+ clear_thread_flag(TIF_POLLING_NRFLAG);
+ smp_mb__after_clear_bit();
+ set_bl_bit();
+ stop_critical_timings();
+
+ while (!need_resched())
+ cpu_sleep();
+
+ start_critical_timings();
+ clear_bl_bit();
+ set_thread_flag(TIF_POLLING_NRFLAG);
+ } else
+ while (!need_resched())
+ cpu_relax();
+}
+
+void cpu_idle(void)
+{
+ set_thread_flag(TIF_POLLING_NRFLAG);
+
+ /* endless idle loop with no priority at all */
+ while (1) {
+ void (*idle)(void) = pm_idle;
+
+ if (!idle)
+ idle = default_idle;
+
+ tick_nohz_stop_sched_tick(1);
+ while (!need_resched())
+ idle();
+ tick_nohz_restart_sched_tick();
+
+ preempt_enable_no_resched();
+ schedule();
+ preempt_disable();
+ check_pgt_cache();
+ }
+}
diff --git a/arch/sh/kernel/process_32.c b/arch/sh/kernel/process_32.c
index e781540..130817a 100644
--- a/arch/sh/kernel/process_32.c
+++ b/arch/sh/kernel/process_32.c
@@ -32,69 +32,8 @@
#include <asm/fpu.h>
#include <asm/syscalls.h>
-static int hlt_counter;
int ubc_usercnt = 0;
-void (*pm_idle)(void);
-void (*pm_power_off)(void);
-EXPORT_SYMBOL(pm_power_off);
-
-static int __init nohlt_setup(char *__unused)
-{
- hlt_counter = 1;
- return 1;
-}
-__setup("nohlt", nohlt_setup);
-
-static int __init hlt_setup(char *__unused)
-{
- hlt_counter = 0;
- return 1;
-}
-__setup("hlt", hlt_setup);
-
-static void default_idle(void)
-{
- if (!hlt_counter) {
- clear_thread_flag(TIF_POLLING_NRFLAG);
- smp_mb__after_clear_bit();
- set_bl_bit();
- stop_critical_timings();
-
- while (!need_resched())
- cpu_sleep();
-
- start_critical_timings();
- clear_bl_bit();
- set_thread_flag(TIF_POLLING_NRFLAG);
- } else
- while (!need_resched())
- cpu_relax();
-}
-
-void cpu_idle(void)
-{
- set_thread_flag(TIF_POLLING_NRFLAG);
-
- /* endless idle loop with no priority at all */
- while (1) {
- void (*idle)(void) = pm_idle;
-
- if (!idle)
- idle = default_idle;
-
- tick_nohz_stop_sched_tick(1);
- while (!need_resched())
- idle();
- tick_nohz_restart_sched_tick();
-
- preempt_enable_no_resched();
- schedule();
- preempt_disable();
- check_pgt_cache();
- }
-}
-
void machine_restart(char * __unused)
{
/* SR.BL=1 and invoke address error to let CPU reset (manual reset) */
diff --git a/arch/sh/kernel/process_64.c b/arch/sh/kernel/process_64.c
index b7aa092..597cf02 100644
--- a/arch/sh/kernel/process_64.c
+++ b/arch/sh/kernel/process_64.c
@@ -33,56 +33,6 @@
struct task_struct *last_task_used_math = NULL;
-static int hlt_counter = 1;
-
-#define HARD_IDLE_TIMEOUT (HZ / 3)
-
-static int __init nohlt_setup(char *__unused)
-{
- hlt_counter = 1;
- return 1;
-}
-
-static int __init hlt_setup(char *__unused)
-{
- hlt_counter = 0;
- return 1;
-}
-
-__setup("nohlt", nohlt_setup);
-__setup("hlt", hlt_setup);
-
-static inline void hlt(void)
-{
- __asm__ __volatile__ ("sleep" : : : "memory");
-}
-
-/*
- * The idle loop on a uniprocessor SH..
- */
-void cpu_idle(void)
-{
- /* endless idle loop with no priority at all */
- while (1) {
- if (hlt_counter) {
- while (!need_resched())
- cpu_relax();
- } else {
- local_irq_disable();
- while (!need_resched()) {
- local_irq_enable();
- hlt();
- local_irq_disable();
- }
- local_irq_enable();
- }
- preempt_enable_no_resched();
- schedule();
- preempt_disable();
- }
-
-}
-
void machine_restart(char * __unused)
{
extern void phys_stext(void);
@@ -97,13 +47,6 @@
void machine_power_off(void)
{
-#if 0
- /* Disable watchdog timer */
- ctrl_outl(0xa5000000, WTCSR);
- /* Configure deep standby on sleep */
- ctrl_outl(0x03, STBCR);
-#endif
-
__asm__ __volatile__ (
"sleep\n\t"
"synci\n\t"
@@ -113,9 +56,6 @@
panic("Unexpected wakeup!\n");
}
-void (*pm_power_off)(void) = machine_power_off;
-EXPORT_SYMBOL(pm_power_off);
-
void show_regs(struct pt_regs * regs)
{
unsigned long long ah, al, bh, bl, ch, cl;