Commit-ID: 0d24260c9e27fc1de20c72669bcc387767a1c170 Gitweb: http://git.kernel.org/tip/0d24260c9e27fc1de20c72669bcc387767a1c170 Author: Thomas Gleixner <t...@linutronix.de> AuthorDate: Thu, 21 Mar 2013 22:49:45 +0100 Committer: Thomas Gleixner <t...@linutronix.de> CommitDate: Mon, 8 Apr 2013 17:39:25 +0200
h8300: Use generic idle loop Use the core idle poll function instead of the private one Signed-off-by: Thomas Gleixner <t...@linutronix.de> Cc: Linus Torvalds <torva...@linux-foundation.org> Cc: Rusty Russell <ru...@rustcorp.com.au> Cc: Paul McKenney <paul...@linux.vnet.ibm.com> Cc: Peter Zijlstra <pet...@infradead.org> Reviewed-by: Cc: Srivatsa S. Bhat <srivatsa.b...@linux.vnet.ibm.com> Cc: Magnus Damm <magnus.d...@gmail.com> Cc: Yoshinori Sato <ys...@users.sourceforge.jp> Link: http://lkml.kernel.org/r/20130321215234.277153...@linutronix.de Signed-off-by: Thomas Gleixner <t...@linutronix.de> --- arch/h8300/Kconfig | 1 + arch/h8300/kernel/process.c | 35 ++++------------------------------- 2 files changed, 5 insertions(+), 31 deletions(-) diff --git a/arch/h8300/Kconfig b/arch/h8300/Kconfig index 79250de..5374975 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 b609f63..a17d2cd 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) { -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
