[tip:smp/hotplug] alpha: Use generic idle loop

tip-bot for Thomas Gleixner
2013-04-08T20:17:28Z

Commit-ID: a123322d8afcfb5f86e0cc0062024084658aeeb2
Gitweb: http://git.kernel.org/tip/a123322d8afcfb5f86e0cc0062024084658aeeb2
Author: Thomas Gleixner <tglx@linutronix.de>
AuthorDate: Thu, 21 Mar 2013 22:49:37 +0100
Committer: Thomas Gleixner <tglx@linutronix.de>
CommitDate: Mon, 8 Apr 2013 17:39:23 +0200

alpha: Use generic idle loop

The core provides a generic idle poll 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: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Link: http://lkml.kernel.org/r/20130321215233.766017538@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
arch/alpha/Kconfig | 1 +
arch/alpha/kernel/process.c | 19 -------------------
arch/alpha/kernel/smp.c | 3 +--
3 files changed, 2 insertions(+), 21 deletions(-)

diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
index 8a33ba0..6046982 100644
--- a/arch/alpha/Kconfig
+++ b/arch/alpha/Kconfig
@@ -17,6 +17,7 @@ config ALPHA
select ARCH_WANT_IPC_PARSE_VERSION
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select GENERIC_SMP_IDLE_THREAD
+ select GENERIC_IDLE_LOOP
select GENERIC_CMOS_UPDATE
select GENERIC_STRNCPY_FROM_USER
select GENERIC_STRNLEN_USER
diff --git a/arch/alpha/kernel/process.c b/arch/alpha/kernel/process.c
index 63d27fb..a3fd8a2 100644
--- a/arch/alpha/kernel/process.c
+++ b/arch/alpha/kernel/process.c
@@ -46,25 +46,6 @@
void (*pm_power_off)(void) = machine_power_off;
EXPORT_SYMBOL(pm_power_off);

-void
-cpu_idle(void)
-{
- current_thread_info()->status |= TS_POLLING;
-
- while (1) {
- /* FIXME -- EV6 and LCA45 know how to power down
- the CPU. */
-
- rcu_idle_enter();
- while (!need_resched())
- cpu_relax();
-
- rcu_idle_exit();
- schedule_preempt_disabled();
- }
-}
-
-
struct halt_info {
int mode;
char *restart_cmd;
diff --git a/arch/alpha/kernel/smp.c b/arch/alpha/kernel/smp.c
index 9603bc2..7b60834 100644
--- a/arch/alpha/kernel/smp.c
+++ b/arch/alpha/kernel/smp.c
@@ -167,8 +167,7 @@ smp_callin(void)
cpuid, current, current->active_mm));

preempt_disable();
- /* Do nothing. */
- cpu_idle();
+ cpu_startup_entry(CPUHP_ONLINE);
}

/* Wait until hwrpb->txrdy is clear for cpu. Return -1 on timeout. */