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authorThomas Gleixner <tglx@linutronix.de>2013-03-21 22:49:41 +0100
committerThomas Gleixner <tglx@linutronix.de>2013-04-08 17:39:24 +0200
commit25d67f860f3a29d216f8206092a284cacbc6127e (patch)
treea1990f28ad875669431a3d856a671e00a702f56c /arch/blackfin
parent01426478df3a8791ff5c8b6b82d409e699cfaf38 (diff)
downloadlinux-25d67f860f3a29d216f8206092a284cacbc6127e.tar.gz
bfin: 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> Cc: Mike Frysinger <vapier@gentoo.org> Link: http://lkml.kernel.org/r/20130321215234.014923303@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/blackfin')
-rw-r--r--arch/blackfin/Kconfig1
-rw-r--r--arch/blackfin/kernel/process.c32
-rw-r--r--arch/blackfin/mach-common/smp.c2
3 files changed, 8 insertions, 27 deletions
diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig
index c3f2e0bc644..3d769a7c494 100644
--- a/arch/blackfin/Kconfig
+++ b/arch/blackfin/Kconfig
@@ -41,6 +41,7 @@ config BLACKFIN
select USE_GENERIC_SMP_HELPERS if SMP
select HAVE_NMI_WATCHDOG if NMI_WATCHDOG
select GENERIC_SMP_IDLE_THREAD
+ select GENERIC_IDLE_LOOP
select ARCH_USES_GETTIMEOFFSET if !GENERIC_CLOCKEVENTS
select HAVE_MOD_ARCH_SPECIFIC
select MODULES_USE_ELF_RELA
diff --git a/arch/blackfin/kernel/process.c b/arch/blackfin/kernel/process.c
index 9782c0329c1..f34323a9054 100644
--- a/arch/blackfin/kernel/process.c
+++ b/arch/blackfin/kernel/process.c
@@ -46,15 +46,14 @@ EXPORT_SYMBOL(pm_power_off);
* The idle loop on BFIN
*/
#ifdef CONFIG_IDLE_L1
-static void default_idle(void)__attribute__((l1_text));
-void cpu_idle(void)__attribute__((l1_text));
+void arch_cpu_idle(void)__attribute__((l1_text));
#endif
/*
* This is our default idle handler. We need to disable
* interrupts here to ensure we don't miss a wakeup call.
*/
-static void default_idle(void)
+void arch_cpu_idle(void)
{
#ifdef CONFIG_IPIPE
ipipe_suspend_domain();
@@ -66,31 +65,12 @@ static void default_idle(void)
hard_local_irq_enable();
}
-/*
- * The idle thread. We try to conserve power, while trying to keep
- * overall latency low. The architecture specific idle is passed
- * a value to indicate the level of "idleness" of the system.
- */
-void cpu_idle(void)
+#ufdef CONFIG_HOTPLUG_CPU
+void arch_cpu_idle_dead(void)
{
- /* endless idle loop with no priority at all */
- while (1) {
-
-#ifdef CONFIG_HOTPLUG_CPU
- if (cpu_is_offline(smp_processor_id()))
- cpu_die();
-#endif
- tick_nohz_idle_enter();
- rcu_idle_enter();
- while (!need_resched())
- default_idle();
- rcu_idle_exit();
- tick_nohz_idle_exit();
- preempt_enable_no_resched();
- schedule();
- preempt_disable();
- }
+ cpu_die();
}
+#endif
/*
* Do necessary setup to start up a newly executed thread.
diff --git a/arch/blackfin/mach-common/smp.c b/arch/blackfin/mach-common/smp.c
index bb61ae4986e..1bc2ce6f3c9 100644
--- a/arch/blackfin/mach-common/smp.c
+++ b/arch/blackfin/mach-common/smp.c
@@ -335,7 +335,7 @@ void __cpuinit secondary_start_kernel(void)
*/
calibrate_delay();
- cpu_idle();
+ cpu_startup_entry(CPUHP_ONLINE);
}
void __init smp_prepare_boot_cpu(void)