diff options
Diffstat (limited to 'arch/ia64/kernel/process.c')
| -rw-r--r-- | arch/ia64/kernel/process.c | 22 |
1 files changed, 8 insertions, 14 deletions
diff --git a/arch/ia64/kernel/process.c b/arch/ia64/kernel/process.c index 91293388dd29..7c43aea5f7f7 100644 --- a/arch/ia64/kernel/process.c +++ b/arch/ia64/kernel/process.c @@ -3,6 +3,7 @@ * * Copyright (C) 1998-2003 Hewlett-Packard Co * David Mosberger-Tang <davidm@hpl.hp.com> + * 04/11/17 Ashok Raj <ashok.raj@intel.com> Added CPU Hotplug Support */ #define __KERNEL_SYSCALLS__ /* see <asm/unistd.h> */ #include <linux/config.h> @@ -200,27 +201,20 @@ default_idle (void) static inline void play_dead(void) { extern void ia64_cpu_local_tick (void); + unsigned int this_cpu = smp_processor_id(); + /* Ack it */ __get_cpu_var(cpu_state) = CPU_DEAD; - /* We shouldn't have to disable interrupts while dead, but - * some interrupts just don't seem to go away, and this makes - * it "work" for testing purposes. */ max_xtp(); local_irq_disable(); - /* Death loop */ - while (__get_cpu_var(cpu_state) != CPU_UP_PREPARE) - cpu_relax(); - + idle_task_exit(); + ia64_jump_to_sal(&sal_boot_rendez_state[this_cpu]); /* - * Enable timer interrupts from now on - * Not required if we put processor in SAL_BOOT_RENDEZ mode. + * The above is a point of no-return, the processor is + * expected to be in SAL loop now. */ - local_flush_tlb_all(); - cpu_set(smp_processor_id(), cpu_online_map); - wmb(); - ia64_cpu_local_tick (); - local_irq_enable(); + BUG(); } #else static inline void play_dead(void) |