[tip:smp/hotplug] hexagon: Use generic idle loop

tip-bot for Thomas Gleixner
2013-04-08T20:27:44Z

Commit-ID: 4e0fcc567239ef4b3f80bba778c30b0a4b624eff
Gitweb: http://git.kernel.org/tip/4e0fcc567239ef4b3f80bba778c30b0a4b624eff
Author: Thomas Gleixner <tglx@linutronix.de>
AuthorDate: Thu, 21 Mar 2013 22:49:46 +0100
Committer: Thomas Gleixner <tglx@linutronix.de>
CommitDate: Mon, 8 Apr 2013 17:39:25 +0200

hexagon: Use generic idle loop

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>
Acked-by: Richard Kuo <rkuo@codeaurora.org>
Link: http://lkml.kernel.org/r/20130321215234.338692935@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
arch/hexagon/Kconfig | 1 +
arch/hexagon/kernel/process.c | 23 +++--------------------
arch/hexagon/kernel/smp.c | 2 +-
3 files changed, 5 insertions(+), 21 deletions(-)

diff --git a/arch/hexagon/Kconfig b/arch/hexagon/Kconfig
index e4decc6..6e3710e 100644
--- a/arch/hexagon/Kconfig
+++ b/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
diff --git a/arch/hexagon/kernel/process.c b/arch/hexagon/kernel/process.c
index 06ae9ff..9b948c6 100644
--- a/arch/hexagon/kernel/process.c
+++ b/arch/hexagon/kernel/process.c
@@ -51,28 +51,11 @@ void start_thread(struct pt_regs *regs, unsigned long pc, unsigned long sp)
* 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();
}

/*
diff --git a/arch/hexagon/kernel/smp.c b/arch/hexagon/kernel/smp.c
index 8e095df..0e364ca 100644
--- a/arch/hexagon/kernel/smp.c
+++ b/arch/hexagon/kernel/smp.c
@@ -184,7 +184,7 @@ void __cpuinit start_secondary(void)

local_irq_enable();

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