diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2013-03-21 22:49:44 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2013-04-08 17:39:25 +0200 |
| commit | ccf8e78fe2a7e92b6d43de8023786b9dd199aab1 (patch) | |
| tree | 0077bd1f61b3ca13fd75d62acf0a2aa7b3fae7af /arch/frv | |
| parent | 8dc7c5ecd8d0f739728d844ee794c4fae169f9c2 (diff) | |
frv: 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: David Howells <dhowells@redhat.com>
Link: http://lkml.kernel.org/r/20130321215234.217235264@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/frv')
| -rw-r--r-- | arch/frv/Kconfig | 1 | ||||
| -rw-r--r-- | arch/frv/kernel/process.c | 27 |
2 files changed, 6 insertions, 22 deletions
diff --git a/arch/frv/Kconfig b/arch/frv/Kconfig index 2ce731f9aa4d..0d998db2039e 100644 --- a/arch/frv/Kconfig +++ b/arch/frv/Kconfig @@ -8,6 +8,7 @@ config FRV select HAVE_GENERIC_HARDIRQS select VIRT_TO_BUS select GENERIC_IRQ_SHOW + select GENERIC_IDLE_LOOP select HAVE_DEBUG_BUGVERBOSE select ARCH_HAVE_NMI_SAFE_CMPXCHG select GENERIC_CPU_DEVICES diff --git a/arch/frv/kernel/process.c b/arch/frv/kernel/process.c index 23916b2a12a2..5d40aeb7712e 100644 --- a/arch/frv/kernel/process.c +++ b/arch/frv/kernel/process.c @@ -59,29 +59,12 @@ static void core_sleep_idle(void) mb(); } -void (*idle)(void) = core_sleep_idle; - -/* - * The idle thread. There's no useful work to be - * done, so just try to conserve power and have a - * low exit latency (ie sit in a loop waiting for - * somebody to say that they'd like to reschedule) - */ -void cpu_idle(void) +void arch_cpu_idle(void) { - /* endless idle loop with no priority at all */ - while (1) { - rcu_idle_enter(); - while (!need_resched()) { - check_pgt_cache(); - - if (!frv_dma_inprogress && idle) - idle(); - } - rcu_idle_exit(); - - schedule_preempt_disabled(); - } + if (!frv_dma_inprogress) + core_sleep_idle(); + else + local_irq_enable(); } void machine_restart(char * __unused) |