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| author | Thomas Gleixner <tglx@linutronix.de> | 2013-03-21 22:49:48 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2013-04-08 17:39:26 +0200 |
| commit | 01436228bfefca77493efa00aa49a8b67167d4c5 (patch) | |
| tree | 622e39a6b8f976863bbb1663cb0648ecbfdd135d | |
| parent | 91d591c387af34db00c39da2d1d25e69a91cf591 (diff) | |
| download | lwn-01436228bfefca77493efa00aa49a8b67167d4c5.tar.gz lwn-01436228bfefca77493efa00aa49a8b67167d4c5.zip | |
m32r: Use generic idle loop
Replace the private poller.
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: Hirokazu Takata <takata@linux-m32r.org>
Link: http://lkml.kernel.org/r/20130321215234.470547189@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| -rw-r--r-- | arch/m32r/Kconfig | 1 | ||||
| -rw-r--r-- | arch/m32r/kernel/process.c | 18 | ||||
| -rw-r--r-- | arch/m32r/kernel/smpboot.c | 2 |
3 files changed, 2 insertions, 19 deletions
diff --git a/arch/m32r/Kconfig b/arch/m32r/Kconfig index bcd17b206571..af814fe478ae 100644 --- a/arch/m32r/Kconfig +++ b/arch/m32r/Kconfig @@ -13,6 +13,7 @@ config M32R select VIRT_TO_BUS select GENERIC_IRQ_PROBE select GENERIC_IRQ_SHOW + select GENERIC_IDLE_LOOP select GENERIC_ATOMIC64 select ARCH_USES_GETTIMEOFFSET select MODULES_USE_ELF_RELA diff --git a/arch/m32r/kernel/process.c b/arch/m32r/kernel/process.c index bde899e155d3..e2d049018c3b 100644 --- a/arch/m32r/kernel/process.c +++ b/arch/m32r/kernel/process.c @@ -47,24 +47,6 @@ unsigned long thread_saved_pc(struct task_struct *tsk) void (*pm_power_off)(void) = NULL; EXPORT_SYMBOL(pm_power_off); -/* - * 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) -{ - /* endless idle loop with no priority at all */ - while (1) { - rcu_idle_enter(); - while (!need_resched()) - cpu_relax(); - rcu_idle_exit(); - schedule_preempt_disabled(); - } -} - void machine_restart(char *__unused) { #if defined(CONFIG_PLAT_MAPPI3) diff --git a/arch/m32r/kernel/smpboot.c b/arch/m32r/kernel/smpboot.c index 13168a769f8f..0ac558adc605 100644 --- a/arch/m32r/kernel/smpboot.c +++ b/arch/m32r/kernel/smpboot.c @@ -432,7 +432,7 @@ int __init start_secondary(void *unused) */ local_flush_tlb_all(); - cpu_idle(); + cpu_startup_entry(CPUHP_ONLINE); return 0; } |