The microblaze idle loop provides a polling and a non polling version,
which are suprisingly both polling, just with slightly different
instrumentation. Remove them and use the generic poller.
Signed-off-by: Thomas Gleixner <t...@linutronix.de>
Cc: Michal Simek <mon...@monstr.eu>
---
arch/microblaze/Kconfig | 2 +
arch/microblaze/include/asm/processor.h | 3 -
arch/microblaze/kernel/process.c | 53 --------------------------------
3 files changed, 2 insertions(+), 56 deletions(-)
Index: linux-2.6/arch/microblaze/Kconfig
===================================================================
--- linux-2.6.orig/arch/microblaze/Kconfig
+++ linux-2.6/arch/microblaze/Kconfig
@@ -26,6 +26,8 @@ config MICROBLAZE
select GENERIC_CPU_DEVICES
select GENERIC_ATOMIC64
select GENERIC_CLOCKEVENTS
+ select GENERIC_IDLE_LOOP
+ select GENERIC_IDLE_POLL_SETUP
select MODULES_USE_ELF_RELA
select CLONE_BACKWARDS
Index: linux-2.6/arch/microblaze/include/asm/processor.h
===================================================================
--- linux-2.6.orig/arch/microblaze/include/asm/processor.h
+++ linux-2.6/arch/microblaze/include/asm/processor.h
@@ -22,7 +22,6 @@
extern const struct seq_operations cpuinfo_op;
# define cpu_relax() barrier()
-# define cpu_sleep() do {} while (0)
#define task_pt_regs(tsk) \
(((struct pt_regs *)(THREAD_SIZE + task_stack_page(tsk))) - 1)
@@ -160,8 +159,6 @@ unsigned long get_wchan(struct task_stru
# define STACK_TOP TASK_SIZE
# define STACK_TOP_MAX STACK_TOP
-void default_idle(void);
-
#ifdef CONFIG_DEBUG_FS
extern struct dentry *of_debugfs_root;
#endif
Index: linux-2.6/arch/microblaze/kernel/process.c
===================================================================
--- linux-2.6.orig/arch/microblaze/kernel/process.c
+++ linux-2.6/arch/microblaze/kernel/process.c
@@ -44,59 +44,6 @@ void show_regs(struct pt_regs *regs)
void (*pm_power_off)(void) = NULL;
EXPORT_SYMBOL(pm_power_off);
-static int hlt_counter = 1;
-
-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);
-
-void default_idle(void)
-{
- if (likely(hlt_counter)) {
- local_irq_disable();
- stop_critical_timings();
- cpu_relax();
- start_critical_timings();
- local_irq_enable();
- } else {
- clear_thread_flag(TIF_POLLING_NRFLAG);
- smp_mb__after_clear_bit();
- local_irq_disable();
- while (!need_resched())
- cpu_sleep();
- local_irq_enable();
- set_thread_flag(TIF_POLLING_NRFLAG);
- }
-}
-
-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())
- default_idle();
- rcu_idle_exit();
- tick_nohz_idle_exit();
-
- schedule_preempt_disabled();
- check_pgt_cache();
- }
-}
-
void flush_thread(void)
{
}
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
