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| author | Thomas Gleixner <tglx@linutronix.de> | 2013-03-21 22:49:45 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2013-04-08 17:39:25 +0200 |
| commit | 0d24260c9e27fc1de20c72669bcc387767a1c170 (patch) | |
| tree | d885f676af8ec49e1f4c358b9121df96e8458543 | |
| parent | ccf8e78fe2a7e92b6d43de8023786b9dd199aab1 (diff) | |
| download | linux-0d24260c9e27fc1de20c72669bcc387767a1c170.tar.gz linux-0d24260c9e27fc1de20c72669bcc387767a1c170.tar.bz2 linux-0d24260c9e27fc1de20c72669bcc387767a1c170.zip | |
h8300: Use generic idle loop
Use the core idle poll function instead of the private one
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: Yoshinori Sato <ysato@users.sourceforge.jp>
Link: http://lkml.kernel.org/r/20130321215234.277153345@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| -rw-r--r-- | arch/h8300/Kconfig | 1 | ||||
| -rw-r--r-- | arch/h8300/kernel/process.c | 35 |
2 files changed, 5 insertions, 31 deletions
diff --git a/arch/h8300/Kconfig b/arch/h8300/Kconfig index 79250de1b12a..5374975fe800 100644 --- a/arch/h8300/Kconfig +++ b/arch/h8300/Kconfig @@ -8,6 +8,7 @@ config H8300 select VIRT_TO_BUS select ARCH_WANT_IPC_PARSE_VERSION select GENERIC_IRQ_SHOW + select GENERIC_IDLE_LOOP select GENERIC_CPU_DEVICES select MODULES_USE_ELF_RELA select OLD_SIGSUSPEND3 diff --git a/arch/h8300/kernel/process.c b/arch/h8300/kernel/process.c index b609f63f1590..a17d2cd463d2 100644 --- a/arch/h8300/kernel/process.c +++ b/arch/h8300/kernel/process.c @@ -53,40 +53,13 @@ asmlinkage void ret_from_kernel_thread(void); * The idle loop on an H8/300.. */ #if !defined(CONFIG_H8300H_SIM) && !defined(CONFIG_H8S_SIM) -static void default_idle(void) +void arch_cpu_idle(void) { - local_irq_disable(); - if (!need_resched()) { - local_irq_enable(); - /* XXX: race here! What if need_resched() gets set now? */ - __asm__("sleep"); - } else - local_irq_enable(); -} -#else -static void default_idle(void) -{ - cpu_relax(); + local_irq_enable(); + /* XXX: race here! What if need_resched() gets set now? */ + __asm__("sleep"); } #endif -void (*idle)(void) = default_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) -{ - while (1) { - rcu_idle_enter(); - while (!need_resched()) - idle(); - rcu_idle_exit(); - schedule_preempt_disabled(); - } -} void machine_restart(char * __unused) { |