| Date | Mon, 8 Apr 2013 13:24:54 -0700 | From | tip-bot for Thomas Gleixner <> | Subject | [tip:smp/hotplug] frv: Use generic idle loop |
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Commit-ID: ccf8e78fe2a7e92b6d43de8023786b9dd199aab1 Gitweb: http://git.kernel.org/tip/ccf8e78fe2a7e92b6d43de8023786b9dd199aab1 Author: Thomas Gleixner <tglx@linutronix.de> AuthorDate: Thu, 21 Mar 2013 22:49:44 +0100 Committer: Thomas Gleixner <tglx@linutronix.de> CommitDate: Mon, 8 Apr 2013 17:39:25 +0200
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> --- arch/frv/Kconfig | 1 + arch/frv/kernel/process.c | 27 +++++---------------------- 2 files changed, 6 insertions(+), 22 deletions(-)
diff --git a/arch/frv/Kconfig b/arch/frv/Kconfig index 2ce731f..0d998db 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 23916b2..5d40aeb77 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)
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