| /* |
| * 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) |
| { |
| int ret; |
| |
| mutex_lock(&spu_coredump_mutex); |
| |
| if (spu_coredump_calls && try_module_get(spu_coredump_calls->owner)) { |
| ret = spu_coredump_calls->arch_notes_size(); |
| module_put(spu_coredump_calls->owner); |
| } else { |
| ret = 0; |
| } |
| |
| mutex_unlock(&spu_coredump_mutex); |
| |
| return ret; |
| } |
| |
| void arch_write_notes(struct file *file) |
| { |
| mutex_lock(&spu_coredump_mutex); |
| if (spu_coredump_calls && try_module_get(spu_coredump_calls->owner)) { |
| spu_coredump_calls->arch_write_notes(file); |
| module_put(spu_coredump_calls->owner); |
| } |
| mutex_unlock(&spu_coredump_mutex); |
| } |
| |
| int register_arch_coredump_calls(struct spu_coredump_calls *calls) |
| { |
| int ret = 0; |
| |
| |
| mutex_lock(&spu_coredump_mutex); |
| if (spu_coredump_calls) |
| ret = -EBUSY; |
| else |
| spu_coredump_calls = calls; |
| mutex_unlock(&spu_coredump_mutex); |
| return ret; |
| } |
| EXPORT_SYMBOL_GPL(register_arch_coredump_calls); |
| |
| void unregister_arch_coredump_calls(struct spu_coredump_calls *calls) |
| { |
| BUG_ON(spu_coredump_calls != calls); |
| |
| mutex_lock(&spu_coredump_mutex); |
| spu_coredump_calls = NULL; |
| mutex_unlock(&spu_coredump_mutex); |
| } |
| EXPORT_SYMBOL_GPL(unregister_arch_coredump_calls); |