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authorLinus Torvalds <torvalds@linux-foundation.org>2013-04-30 07:50:17 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-04-30 07:50:17 -0700
commit8700c95adb033843fc163d112b9d21d4fda78018 (patch)
tree7bb9a37b8fe6328f63a61d88063c556346001098 /arch/metag
parent16fa94b532b1958f508e07eca1a9256351241fbc (diff)
parentd190e8195b90bc1e65c494fe08e54e9e581bfd16 (diff)
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Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull SMP/hotplug changes from Ingo Molnar: "This is a pretty large, multi-arch series unifying and generalizing the various disjunct pieces of idle routines that architectures have historically copied from each other and have grown in random, wildly inconsistent and sometimes buggy directions: 101 files changed, 455 insertions(+), 1328 deletions(-) this went through a number of review and test iterations before it was committed, it was tested on various architectures, was exposed to linux-next for quite some time - nevertheless it might cause problems on architectures that don't read the mailing lists and don't regularly test linux-next. This cat herding excercise was motivated by the -rt kernel, and was brought to you by Thomas "the Whip" Gleixner." * 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (40 commits) idle: Remove GENERIC_IDLE_LOOP config switch um: Use generic idle loop ia64: Make sure interrupts enabled when we "safe_halt()" sparc: Use generic idle loop idle: Remove unused ARCH_HAS_DEFAULT_IDLE bfin: Fix typo in arch_cpu_idle() xtensa: Use generic idle loop x86: Use generic idle loop unicore: Use generic idle loop tile: Use generic idle loop tile: Enter idle with preemption disabled sh: Use generic idle loop score: Use generic idle loop s390: Use generic idle loop powerpc: Use generic idle loop parisc: Use generic idle loop openrisc: Use generic idle loop mn10300: Use generic idle loop mips: Use generic idle loop microblaze: Use generic idle loop ...
Diffstat (limited to 'arch/metag')
-rw-r--r--arch/metag/include/asm/thread_info.h2
-rw-r--r--arch/metag/kernel/process.c35
-rw-r--r--arch/metag/kernel/smp.c2
3 files changed, 7 insertions, 32 deletions
diff --git a/arch/metag/include/asm/thread_info.h b/arch/metag/include/asm/thread_info.h
index 0ecd34d8b5f6..7c4a33006142 100644
--- a/arch/metag/include/asm/thread_info.h
+++ b/arch/metag/include/asm/thread_info.h
@@ -150,6 +150,4 @@ static inline int kstack_end(void *addr)
#define _TIF_WORK_MASK (_TIF_ALLWORK_MASK & ~(_TIF_SYSCALL_TRACE | \
_TIF_SYSCALL_AUDIT | _TIF_SINGLESTEP))
-#define tsk_is_polling(t) test_tsk_thread_flag(t, TIF_POLLING_NRFLAG)
-
#endif /* _ASM_THREAD_INFO_H */
diff --git a/arch/metag/kernel/process.c b/arch/metag/kernel/process.c
index c6efe62e5b76..dc5923544560 100644
--- a/arch/metag/kernel/process.c
+++ b/arch/metag/kernel/process.c
@@ -22,6 +22,7 @@
#include <linux/pm.h>
#include <linux/syscalls.h>
#include <linux/uaccess.h>
+#include <linux/smp.h>
#include <asm/core_reg.h>
#include <asm/user_gateway.h>
#include <asm/tcm.h>
@@ -31,7 +32,7 @@
/*
* Wait for the next interrupt and enable local interrupts
*/
-static inline void arch_idle(void)
+void arch_cpu_idle(void)
{
int tmp;
@@ -59,36 +60,12 @@ static inline void arch_idle(void)
: "r" (get_trigger_mask()));
}
-void cpu_idle(void)
-{
- set_thread_flag(TIF_POLLING_NRFLAG);
-
- while (1) {
- tick_nohz_idle_enter();
- rcu_idle_enter();
-
- while (!need_resched()) {
- /*
- * We need to disable interrupts here to ensure we don't
- * miss a wakeup call.
- */
- local_irq_disable();
- if (!need_resched()) {
#ifdef CONFIG_HOTPLUG_CPU
- if (cpu_is_offline(smp_processor_id()))
- cpu_die();
-#endif
- arch_idle();
- } else {
- local_irq_enable();
- }
- }
-
- rcu_idle_exit();
- tick_nohz_idle_exit();
- schedule_preempt_disabled();
- }
+void arch_cpu_idle_dead(void)
+{
+ cpu_die();
}
+#endif
void (*pm_power_off)(void);
EXPORT_SYMBOL(pm_power_off);
diff --git a/arch/metag/kernel/smp.c b/arch/metag/kernel/smp.c
index 4b6d1f14df32..4de8fc8e31a5 100644
--- a/arch/metag/kernel/smp.c
+++ b/arch/metag/kernel/smp.c
@@ -297,7 +297,7 @@ asmlinkage void secondary_start_kernel(void)
/*
* OK, it's off to the idle thread for us
*/
- cpu_idle();
+ cpu_startup_entry(CPUHP_ONLINE);
}
void __init smp_cpus_done(unsigned int max_cpus)