diff options
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/kernel/rtas.c | 29 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/Makefile | 2 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/hotplug-cpu.c | 58 |
3 files changed, 60 insertions, 29 deletions
diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c index 387ed0d9ad6..952f4c2fc1e 100644 --- a/arch/powerpc/kernel/rtas.c +++ b/arch/powerpc/kernel/rtas.c @@ -810,32 +810,6 @@ asmlinkage int ppc_rtas(struct rtas_args __user *uargs) return 0; } -#ifdef CONFIG_HOTPLUG_CPU -/* This version can't take the spinlock, because it never returns */ -static struct rtas_args rtas_stop_self_args = { - /* The token is initialized for real in setup_system() */ - .token = RTAS_UNKNOWN_SERVICE, - .nargs = 0, - .nret = 1, - .rets = &rtas_stop_self_args.args[0], -}; - -void rtas_stop_self(void) -{ - struct rtas_args *rtas_args = &rtas_stop_self_args; - - local_irq_disable(); - - BUG_ON(rtas_args->token == RTAS_UNKNOWN_SERVICE); - - printk("cpu %u (hwid %u) Ready to die...\n", - smp_processor_id(), hard_smp_processor_id()); - enter_rtas(__pa(rtas_args)); - - panic("Alas, I survived.\n"); -} -#endif - /* * Call early during boot, before mem init or bootmem, to retrieve the RTAS * informations from the device-tree and allocate the RMO buffer for userland @@ -880,9 +854,6 @@ void __init rtas_initialize(void) #endif rtas_rmo_buf = lmb_alloc_base(RTAS_RMOBUF_MAX, PAGE_SIZE, rtas_region); -#ifdef CONFIG_HOTPLUG_CPU - rtas_stop_self_args.token = rtas_token("stop-self"); -#endif /* CONFIG_HOTPLUG_CPU */ #ifdef CONFIG_RTAS_ERROR_LOGGING rtas_last_error_token = rtas_token("rtas-last-error"); #endif diff --git a/arch/powerpc/platforms/pseries/Makefile b/arch/powerpc/platforms/pseries/Makefile index 997243a91be..69590fbf83d 100644 --- a/arch/powerpc/platforms/pseries/Makefile +++ b/arch/powerpc/platforms/pseries/Makefile @@ -10,6 +10,8 @@ obj-$(CONFIG_XICS) += xics.o obj-$(CONFIG_SCANLOG) += scanlog.o obj-$(CONFIG_EEH) += eeh.o eeh_cache.o eeh_driver.o eeh_event.o +obj-$(CONFIG_HOTPLUG_CPU) += hotplug-cpu.o + obj-$(CONFIG_HVC_CONSOLE) += hvconsole.o obj-$(CONFIG_HVCS) += hvcserver.o obj-$(CONFIG_HCALL_STATS) += hvCall_inst.o diff --git a/arch/powerpc/platforms/pseries/hotplug-cpu.c b/arch/powerpc/platforms/pseries/hotplug-cpu.c new file mode 100644 index 00000000000..6e21ebdfcef --- /dev/null +++ b/arch/powerpc/platforms/pseries/hotplug-cpu.c @@ -0,0 +1,58 @@ +/* + * pseries CPU Hotplug infrastructure. + * + * Split out from arch/powerpc/kernel/rtas.c + * + * Peter Bergner, IBM March 2001. + * Copyright (C) 2001 IBM. + * + * Copyright (C) 2006 Michael Ellerman, IBM Corporation + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#include <linux/kernel.h> +#include <linux/delay.h> +#include <linux/cpu.h> +#include <asm/system.h> +#include <asm/prom.h> +#include <asm/rtas.h> +#include <asm/firmware.h> +#include <asm/machdep.h> +#include <asm/vdso_datapage.h> +#include <asm/pSeries_reconfig.h> +#include "xics.h" + +/* This version can't take the spinlock, because it never returns */ +static struct rtas_args rtas_stop_self_args = { + .token = RTAS_UNKNOWN_SERVICE, + .nargs = 0, + .nret = 1, + .rets = &rtas_stop_self_args.args[0], +}; + +void rtas_stop_self(void) +{ + struct rtas_args *args = &rtas_stop_self_args; + + local_irq_disable(); + + BUG_ON(args->token == RTAS_UNKNOWN_SERVICE); + + printk("cpu %u (hwid %u) Ready to die...\n", + smp_processor_id(), hard_smp_processor_id()); + enter_rtas(__pa(args)); + + panic("Alas, I survived.\n"); +} + +static int __init pseries_cpu_hotplug_init(void) +{ + rtas_stop_self_args.token = rtas_token("stop-self"); + + return 0; +} +arch_initcall(pseries_cpu_hotplug_init); |