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Commit a123322d authored by Thomas Gleixner's avatar Thomas Gleixner
Browse files

alpha: Use generic idle loop 



The core provides a generic idle poll loop.

Signed-off-by: default avatarThomas 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: default avatarCc: 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: default avatarThomas Gleixner <tglx@linutronix.de>
parent fa35e42a

arch/alpha/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -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

arch/alpha/kernel/process.c

+0 −19
Original line number Diff line number Diff line
@@ -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;

arch/alpha/kernel/smp.c

+1 −2
Original line number Diff line number Diff line
@@ -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.  */