82 lines
2.2 KiB
C
82 lines
2.2 KiB
C
/*
|
|
* SPU core dump code
|
|
*
|
|
* (C) Copyright 2006 IBM Corp.
|
|
*
|
|
* Author: Dwayne Grant McConnell <decimal@us.ibm.com>
|
|
*
|
|
* 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, or (at your option)
|
|
* any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
#include <linux/file.h>
|
|
#include <linux/module.h>
|
|
#include <linux/syscalls.h>
|
|
|
|
#include <asm/spu.h>
|
|
|
|
static struct spu_coredump_calls spu_coredump_calls;
|
|
static DEFINE_MUTEX(spu_coredump_mutex);
|
|
|
|
int arch_notes_size(void)
|
|
{
|
|
long ret;
|
|
struct module *owner = spu_coredump_calls.owner;
|
|
|
|
ret = -ENOSYS;
|
|
mutex_lock(&spu_coredump_mutex);
|
|
if (owner && try_module_get(owner)) {
|
|
ret = spu_coredump_calls.arch_notes_size();
|
|
module_put(owner);
|
|
}
|
|
mutex_unlock(&spu_coredump_mutex);
|
|
return ret;
|
|
}
|
|
|
|
void arch_write_notes(struct file *file)
|
|
{
|
|
struct module *owner = spu_coredump_calls.owner;
|
|
|
|
mutex_lock(&spu_coredump_mutex);
|
|
if (owner && try_module_get(owner)) {
|
|
spu_coredump_calls.arch_write_notes(file);
|
|
module_put(owner);
|
|
}
|
|
mutex_unlock(&spu_coredump_mutex);
|
|
}
|
|
|
|
int register_arch_coredump_calls(struct spu_coredump_calls *calls)
|
|
{
|
|
if (spu_coredump_calls.owner)
|
|
return -EBUSY;
|
|
|
|
mutex_lock(&spu_coredump_mutex);
|
|
spu_coredump_calls.arch_notes_size = calls->arch_notes_size;
|
|
spu_coredump_calls.arch_write_notes = calls->arch_write_notes;
|
|
spu_coredump_calls.owner = calls->owner;
|
|
mutex_unlock(&spu_coredump_mutex);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(register_arch_coredump_calls);
|
|
|
|
void unregister_arch_coredump_calls(struct spu_coredump_calls *calls)
|
|
{
|
|
BUG_ON(spu_coredump_calls.owner != calls->owner);
|
|
|
|
mutex_lock(&spu_coredump_mutex);
|
|
spu_coredump_calls.owner = NULL;
|
|
mutex_unlock(&spu_coredump_mutex);
|
|
}
|
|
EXPORT_SYMBOL_GPL(unregister_arch_coredump_calls);
|