aboutsummaryrefslogtreecommitdiffstats
path: root/arch
diff options
context:
space:
mode:
Diffstat (limited to 'arch')
-rw-r--r--arch/h8300/Kconfig1
-rw-r--r--arch/h8300/kernel/process.c35
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
8 select VIRT_TO_BUS 8 select VIRT_TO_BUS
9 select ARCH_WANT_IPC_PARSE_VERSION 9 select ARCH_WANT_IPC_PARSE_VERSION
10 select GENERIC_IRQ_SHOW 10 select GENERIC_IRQ_SHOW
11 select GENERIC_IDLE_LOOP
11 select GENERIC_CPU_DEVICES 12 select GENERIC_CPU_DEVICES
12 select MODULES_USE_ELF_RELA 13 select MODULES_USE_ELF_RELA
13 select OLD_SIGSUSPEND3 14 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);
53 * The idle loop on an H8/300.. 53 * The idle loop on an H8/300..
54 */ 54 */
55#if !defined(CONFIG_H8300H_SIM) && !defined(CONFIG_H8S_SIM) 55#if !defined(CONFIG_H8300H_SIM) && !defined(CONFIG_H8S_SIM)
56static void default_idle(void) 56void arch_cpu_idle(void)
57{ 57{
58 local_irq_disable(); 58 local_irq_enable();
59 if (!need_resched()) { 59 /* XXX: race here! What if need_resched() gets set now? */
60 local_irq_enable(); 60 __asm__("sleep");
61 /* XXX: race here! What if need_resched() gets set now? */
62 __asm__("sleep");
63 } else
64 local_irq_enable();
65}
66#else
67static void default_idle(void)
68{
69 cpu_relax();
70} 61}
71#endif 62#endif
72void (*idle)(void) = default_idle;
73
74/*
75 * The idle thread. There's no useful work to be
76 * done, so just try to conserve power and have a
77 * low exit latency (ie sit in a loop waiting for
78 * somebody to say that they'd like to reschedule)
79 */
80void cpu_idle(void)
81{
82 while (1) {
83 rcu_idle_enter();
84 while (!need_resched())
85 idle();
86 rcu_idle_exit();
87 schedule_preempt_disabled();
88 }
89}
90 63
91void machine_restart(char * __unused) 64void machine_restart(char * __unused)
92{ 65{