mirror of
https://github.com/torvalds/linux.git
synced 2024-11-29 07:31:29 +00:00
[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>
This commit is contained in:
parent
a081e126e1
commit
0332c2d447
@ -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
|
||||
|
@ -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
|
||||
|
58
arch/powerpc/platforms/pseries/hotplug-cpu.c
Normal file
58
arch/powerpc/platforms/pseries/hotplug-cpu.c
Normal file
@ -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);
|
Loading…
Reference in New Issue
Block a user