sh: Split out the idle loop for reuse between _32/_64 variants.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

5 files changed, 83 insertions, 123 deletions

diff --git a/arch/sh/kernel/Makefile_32 b/arch/sh/kernel/Makefile_32
index d3f2726b07dc..d9df9e567946 100644
--- a/arch/sh/kernel/Makefile_32
+++ b/arch/sh/kernel/Makefile_32
@@ -9,7 +9,7 @@ ifdef CONFIG_FUNCTION_TRACER
 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 c97660b2b48d..4304b2593c2c 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 000000000000..fe59ccfc1152
--- /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 e781540bd991..130817affa64 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 b7aa09235b51..597cf02db3fc 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_halt(void)
 
 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 @@ void machine_power_off(void)
         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;