[patch 16/34] hexagon: Use generic idle loop

Thomas Gleixner
2013-03-21T21:59:17Z

[-- Attachment #1: hexagon-use-generic-idle-loop.patch --]
[-- Type: text/plain, Size: 1937 bytes --]

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Richard Kuo <rkuo@codeaurora.org>
---
arch/hexagon/Kconfig | 1 +
arch/hexagon/kernel/process.c | 23 +++--------------------
arch/hexagon/kernel/smp.c | 2 +-
3 files changed, 5 insertions(+), 21 deletions(-)

Index: linux-2.6/arch/hexagon/Kconfig
===================================================================
--- linux-2.6.orig/arch/hexagon/Kconfig
+++ linux-2.6/arch/hexagon/Kconfig
@@ -24,6 +24,7 @@ config HEXAGON
select NO_IOPORT
select GENERIC_IOMAP
select GENERIC_SMP_IDLE_THREAD
+ select GENERIC_IDLE_LOOP
select STACKTRACE_SUPPORT
select KTIME_SCALAR
select GENERIC_CLOCKEVENTS
Index: linux-2.6/arch/hexagon/kernel/process.c
===================================================================
--- linux-2.6.orig/arch/hexagon/kernel/process.c
+++ linux-2.6/arch/hexagon/kernel/process.c
@@ -51,28 +51,11 @@ void start_thread(struct pt_regs *regs,
* If hardware or VM offer wait termination even though interrupts
* are disabled.
*/
-static void default_idle(void)
+void arch_cpu_idle(void)
{
__vmwait();
-}
-
-void (*idle_sleep)(void) = default_idle;
-
-void cpu_idle(void)
-{
- while (1) {
- tick_nohz_idle_enter();
- local_irq_disable();
- while (!need_resched()) {
- idle_sleep();
- /* interrupts wake us up, but aren't serviced */
- local_irq_enable(); /* service interrupt */
- local_irq_disable();
- }
- local_irq_enable();
- tick_nohz_idle_exit();
- schedule();
- }
+ /* interrupts wake us up, but irqs are still disabled */
+ local_irq_enable();
}

/*
Index: linux-2.6/arch/hexagon/kernel/smp.c
===================================================================
--- linux-2.6.orig/arch/hexagon/kernel/smp.c
+++ linux-2.6/arch/hexagon/kernel/smp.c
@@ -184,7 +184,7 @@ void __cpuinit start_secondary(void)

local_irq_enable();

- cpu_idle();
+ cpu_startup_entry(CPUHP_ONLINE);
}