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author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-04-30 14:50:17 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-04-30 14:50:17 (GMT) |
commit | 8700c95adb033843fc163d112b9d21d4fda78018 (patch) | |
tree | 7bb9a37b8fe6328f63a61d88063c556346001098 /arch/metag | |
parent | 16fa94b532b1958f508e07eca1a9256351241fbc (diff) | |
parent | d190e8195b90bc1e65c494fe08e54e9e581bfd16 (diff) | |
download | linux-8700c95adb033843fc163d112b9d21d4fda78018.tar.xz |
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.h | 2 | ||||
-rw-r--r-- | arch/metag/kernel/process.c | 35 | ||||
-rw-r--r-- | arch/metag/kernel/smp.c | 2 |
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 0ecd34d..7c4a330 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 c6efe62..dc59235 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 4b6d1f14..4de8fc8 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) |