avr32: Use generic idle loop
Also replace the idle poll enforcement by the generic functionality. 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: Hans-Christian Egtvedt <egtvedt@samfundet.no> Link: http://lkml.kernel.org/r/20130321215233.950290809@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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@ -10,6 +10,7 @@ config AVR32
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select VIRT_TO_BUS
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select GENERIC_IRQ_PROBE
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select GENERIC_ATOMIC64
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select GENERIC_IDLE_LOOP
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select HARDIRQS_SW_RESEND
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select GENERIC_IRQ_SHOW
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select ARCH_HAVE_CUSTOM_GPIO_H
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@ -30,18 +30,9 @@ EXPORT_SYMBOL(pm_power_off);
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* This file handles the architecture-dependent parts of process handling..
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*/
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void cpu_idle(void)
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void arch_cpu_idle(void)
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{
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/* endless idle loop with no priority at all */
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while (1) {
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tick_nohz_idle_enter();
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rcu_idle_enter();
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while (!need_resched())
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cpu_idle_sleep();
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rcu_idle_exit();
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tick_nohz_idle_exit();
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schedule_preempt_disabled();
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}
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cpu_enter_idle();
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}
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void machine_halt(void)
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@ -12,6 +12,7 @@
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#include <linux/irq.h>
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#include <linux/kernel.h>
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#include <linux/time.h>
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#include <linux/cpu.h>
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#include <asm/sysreg.h>
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@ -87,13 +88,17 @@ static void comparator_mode(enum clock_event_mode mode,
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pr_debug("%s: start\n", evdev->name);
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/* FALLTHROUGH */
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case CLOCK_EVT_MODE_RESUME:
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cpu_disable_idle_sleep();
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/*
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* If we're using the COUNT and COMPARE registers we
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* need to force idle poll.
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*/
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cpu_idle_poll_ctrl(true);
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break;
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case CLOCK_EVT_MODE_UNUSED:
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case CLOCK_EVT_MODE_SHUTDOWN:
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sysreg_write(COMPARE, 0);
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pr_debug("%s: stop\n", evdev->name);
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cpu_enable_idle_sleep();
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cpu_idle_poll_ctrl(false);
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break;
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default:
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BUG();
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@ -21,30 +21,6 @@
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extern void cpu_enter_idle(void);
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extern void cpu_enter_standby(unsigned long sdramc_base);
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extern bool disable_idle_sleep;
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static inline void cpu_disable_idle_sleep(void)
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{
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disable_idle_sleep = true;
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}
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static inline void cpu_enable_idle_sleep(void)
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{
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disable_idle_sleep = false;
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}
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static inline void cpu_idle_sleep(void)
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{
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/*
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* If we're using the COUNT and COMPARE registers for
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* timekeeping, we can't use the IDLE state.
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*/
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if (disable_idle_sleep)
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cpu_relax();
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else
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cpu_enter_idle();
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}
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void intc_set_suspend_handler(unsigned long offset);
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#endif
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@ -18,13 +18,6 @@
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/* Same as 0xfff00000 but fits in a 21 bit signed immediate */
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#define PM_BASE -0x100000
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.section .bss, "wa", @nobits
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.global disable_idle_sleep
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.type disable_idle_sleep, @object
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disable_idle_sleep:
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.int 4
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.size disable_idle_sleep, . - disable_idle_sleep
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/* Keep this close to the irq handlers */
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.section .irq.text, "ax", @progbits
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