diff options
author | Michael Ellerman <michael@ellerman.id.au> | 2006-12-05 17:52:36 +1100 |
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committer | Paul Mackerras <paulus@samba.org> | 2006-12-08 15:55:54 +1100 |
commit | 0332c2d447a7a20a4d744ba3814a349d0c1c6405 (patch) | |
tree | 5929c942c011f8a978788a9dd1d02c265cd06148 /arch/powerpc/platforms/pseries | |
parent | a081e126e12f78651499ba0f9944a7df1e9b06b6 (diff) | |
download | op-kernel-dev-0332c2d447a7a20a4d744ba3814a349d0c1c6405.zip op-kernel-dev-0332c2d447a7a20a4d744ba3814a349d0c1c6405.tar.gz |
[POWERPC] Move rtas_stop_self() into platforms/pseries/hotplug-cpu.c
As the first step in consolidating the pseries hotplug cpu code,
create platforms/pseries/hotplug-cpu.c and move rtas_stop_self()
into it. Do the rtas token initialisation in a new initcall, rather
than rtas_initialize().
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/platforms/pseries')
-rw-r--r-- | arch/powerpc/platforms/pseries/Makefile | 2 | ||||
-rw-r--r-- | arch/powerpc/platforms/pseries/hotplug-cpu.c | 58 |
2 files changed, 60 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/pseries/Makefile b/arch/powerpc/platforms/pseries/Makefile index 997243a..69590fb 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 0000000..6e21ebd --- /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); |