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| author | Thomas Gleixner <tglx@linutronix.de> | 2013-03-21 22:49:40 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2013-04-08 17:39:24 +0200 |
| commit | 01426478df3a8791ff5c8b6b82d409e699cfaf38 (patch) | |
| tree | baabc8028b91ed33c7cc20f92acb76b29c5d39d3 /arch/avr32/kernel | |
| parent | 0087298f68a726493a637c4f68d148b31102b0d9 (diff) | |
| download | lwn-01426478df3a8791ff5c8b6b82d409e699cfaf38.tar.gz lwn-01426478df3a8791ff5c8b6b82d409e699cfaf38.zip | |
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>
Diffstat (limited to 'arch/avr32/kernel')
| -rw-r--r-- | arch/avr32/kernel/process.c | 13 | ||||
| -rw-r--r-- | arch/avr32/kernel/time.c | 9 |
2 files changed, 9 insertions, 13 deletions
diff --git a/arch/avr32/kernel/process.c b/arch/avr32/kernel/process.c index fd78f58ea79a..073c3c2fa521 100644 --- a/arch/avr32/kernel/process.c +++ b/arch/avr32/kernel/process.c @@ -30,18 +30,9 @@ EXPORT_SYMBOL(pm_power_off); * This file handles the architecture-dependent parts of process handling.. */ -void cpu_idle(void) +void arch_cpu_idle(void) { - /* endless idle loop with no priority at all */ - while (1) { - tick_nohz_idle_enter(); - rcu_idle_enter(); - while (!need_resched()) - cpu_idle_sleep(); - rcu_idle_exit(); - tick_nohz_idle_exit(); - schedule_preempt_disabled(); - } + cpu_enter_idle(); } void machine_halt(void) diff --git a/arch/avr32/kernel/time.c b/arch/avr32/kernel/time.c index 05ad29112ff4..869a1c6ffeee 100644 --- a/arch/avr32/kernel/time.c +++ b/arch/avr32/kernel/time.c @@ -12,6 +12,7 @@ #include <linux/irq.h> #include <linux/kernel.h> #include <linux/time.h> +#include <linux/cpu.h> #include <asm/sysreg.h> @@ -87,13 +88,17 @@ static void comparator_mode(enum clock_event_mode mode, pr_debug("%s: start\n", evdev->name); /* FALLTHROUGH */ case CLOCK_EVT_MODE_RESUME: - cpu_disable_idle_sleep(); + /* + * If we're using the COUNT and COMPARE registers we + * need to force idle poll. + */ + cpu_idle_poll_ctrl(true); break; case CLOCK_EVT_MODE_UNUSED: case CLOCK_EVT_MODE_SHUTDOWN: sysreg_write(COMPARE, 0); pr_debug("%s: stop\n", evdev->name); - cpu_enable_idle_sleep(); + cpu_idle_poll_ctrl(false); break; default: BUG(); |