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e5b9b344c7
This change introduces no functional changes to the memory management
interfaces. It only restructures the existing codes by separating the
kmem, vmem, and kmem cache implementations in the separate source and
header files.
Splitting this functionality in to separate files required the addition
of spl_vmem_{init,fini}() and spl_kmem_cache_{initi,fini}() functions.
Additionally, several minor changes to the #include's were required to
accommodate the removal of extraneous header from kmem.h.
But again, while large this patch introduces no functional changes.
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
219 lines
8.7 KiB
C
219 lines
8.7 KiB
C
/*****************************************************************************\
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* Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
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* Copyright (C) 2007 The Regents of the University of California.
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* Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
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* Written by Brian Behlendorf <behlendorf1@llnl.gov>.
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* UCRL-CODE-235197
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*
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* This file is part of the SPL, Solaris Porting Layer.
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* For details, see <http://zfsonlinux.org/>.
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*
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* The SPL is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* The SPL is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with the SPL. If not, see <http://www.gnu.org/licenses/>.
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\*****************************************************************************/
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#ifndef _SPLAT_INTERNAL_H
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#define _SPLAT_INTERNAL_H
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#include "splat-ctl.h"
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#include <sys/mutex.h>
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#include <linux/file_compat.h>
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#define SPLAT_SUBSYSTEM_INIT(type) \
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({ splat_subsystem_t *_sub_; \
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\
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_sub_ = (splat_subsystem_t *)splat_##type##_init(); \
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if (_sub_ == NULL) { \
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printk(KERN_ERR "splat: Error initializing: " #type "\n"); \
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} else { \
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spin_lock(&splat_module_lock); \
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list_add_tail(&(_sub_->subsystem_list), \
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&splat_module_list); \
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spin_unlock(&splat_module_lock); \
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} \
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})
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#define SPLAT_SUBSYSTEM_FINI(type) \
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({ splat_subsystem_t *_sub_, *_tmp_; \
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int _id_, _flag_ = 0; \
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\
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_id_ = splat_##type##_id(); \
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spin_lock(&splat_module_lock); \
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list_for_each_entry_safe(_sub_, _tmp_, &splat_module_list, \
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subsystem_list) { \
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if (_sub_->desc.id == _id_) { \
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list_del_init(&(_sub_->subsystem_list)); \
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spin_unlock(&splat_module_lock); \
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splat_##type##_fini(_sub_); \
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spin_lock(&splat_module_lock); \
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_flag_ = 1; \
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} \
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} \
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spin_unlock(&splat_module_lock); \
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\
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if (!_flag_) \
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printk(KERN_ERR "splat: Error finalizing: " #type "\n"); \
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})
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#define SPLAT_TEST_INIT(sub, n, d, tid, func) \
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({ splat_test_t *_test_; \
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\
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_test_ = (splat_test_t *)kmalloc(sizeof(*_test_), GFP_KERNEL); \
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if (_test_ == NULL) { \
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printk(KERN_ERR "splat: Error initializing: " n "/" #tid" \n");\
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} else { \
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memset(_test_, 0, sizeof(*_test_)); \
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strncpy(_test_->desc.name, n, SPLAT_NAME_SIZE-1); \
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strncpy(_test_->desc.desc, d, SPLAT_DESC_SIZE-1); \
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_test_->desc.id = tid; \
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_test_->test = func; \
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INIT_LIST_HEAD(&(_test_->test_list)); \
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spin_lock(&((sub)->test_lock)); \
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list_add_tail(&(_test_->test_list),&((sub)->test_list));\
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spin_unlock(&((sub)->test_lock)); \
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} \
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})
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#define SPLAT_TEST_FINI(sub, tid) \
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({ splat_test_t *_test_, *_tmp_; \
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int _flag_ = 0; \
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\
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spin_lock(&((sub)->test_lock)); \
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list_for_each_entry_safe(_test_, _tmp_, \
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&((sub)->test_list), test_list) { \
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if (_test_->desc.id == tid) { \
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list_del_init(&(_test_->test_list)); \
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_flag_ = 1; \
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} \
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} \
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spin_unlock(&((sub)->test_lock)); \
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\
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if (!_flag_) \
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printk(KERN_ERR "splat: Error finalizing: " #tid "\n"); \
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})
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typedef int (*splat_test_func_t)(struct file *, void *);
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typedef struct splat_test {
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struct list_head test_list;
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splat_user_t desc;
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splat_test_func_t test;
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} splat_test_t;
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typedef struct splat_subsystem {
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struct list_head subsystem_list;/* List had to chain entries */
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splat_user_t desc;
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spinlock_t test_lock;
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struct list_head test_list;
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} splat_subsystem_t;
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#define SPLAT_INFO_BUFFER_SIZE 65536
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#define SPLAT_INFO_BUFFER_REDZONE 256
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typedef struct splat_info {
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kmutex_t info_lock;
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int info_size;
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char *info_buffer;
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char *info_head; /* Internal kernel use only */
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} splat_info_t;
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#define sym2str(sym) (char *)(#sym)
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#define splat_print(file, format, args...) \
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({ splat_info_t *_info_ = (splat_info_t *)file->private_data; \
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int _rc_; \
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\
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ASSERT(_info_); \
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ASSERT(_info_->info_buffer); \
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\
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mutex_enter(&_info_->info_lock); \
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\
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/* Don't allow the kernel to start a write in the red zone */ \
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if ((int)(_info_->info_head - _info_->info_buffer) > \
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(SPLAT_INFO_BUFFER_SIZE - SPLAT_INFO_BUFFER_REDZONE)) { \
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_rc_ = -EOVERFLOW; \
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} else { \
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_rc_ = sprintf(_info_->info_head, format, args); \
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if (_rc_ >= 0) \
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_info_->info_head += _rc_; \
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} \
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\
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mutex_exit(&_info_->info_lock); \
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_rc_; \
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})
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#define splat_vprint(file, test, format, args...) \
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splat_print(file, "%*s: " format, SPLAT_NAME_SIZE, test, args)
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#define splat_locked_test(lock, test) \
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({ \
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int _rc_; \
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spin_lock(lock); \
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_rc_ = (test) ? 1 : 0; \
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spin_unlock(lock); \
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_rc_; \
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})
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splat_subsystem_t *splat_condvar_init(void);
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splat_subsystem_t *splat_kmem_init(void);
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splat_subsystem_t *splat_mutex_init(void);
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splat_subsystem_t *splat_krng_init(void);
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splat_subsystem_t *splat_rwlock_init(void);
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splat_subsystem_t *splat_taskq_init(void);
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splat_subsystem_t *splat_thread_init(void);
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splat_subsystem_t *splat_time_init(void);
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splat_subsystem_t *splat_vnode_init(void);
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splat_subsystem_t *splat_kobj_init(void);
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splat_subsystem_t *splat_atomic_init(void);
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splat_subsystem_t *splat_list_init(void);
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splat_subsystem_t *splat_generic_init(void);
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splat_subsystem_t *splat_cred_init(void);
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splat_subsystem_t *splat_zlib_init(void);
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splat_subsystem_t *splat_linux_init(void);
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void splat_condvar_fini(splat_subsystem_t *);
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void splat_kmem_fini(splat_subsystem_t *);
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void splat_mutex_fini(splat_subsystem_t *);
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void splat_krng_fini(splat_subsystem_t *);
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void splat_rwlock_fini(splat_subsystem_t *);
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void splat_taskq_fini(splat_subsystem_t *);
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void splat_thread_fini(splat_subsystem_t *);
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void splat_time_fini(splat_subsystem_t *);
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void splat_vnode_fini(splat_subsystem_t *);
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void splat_kobj_fini(splat_subsystem_t *);
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void splat_atomic_fini(splat_subsystem_t *);
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void splat_list_fini(splat_subsystem_t *);
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void splat_generic_fini(splat_subsystem_t *);
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void splat_cred_fini(splat_subsystem_t *);
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void splat_zlib_fini(splat_subsystem_t *);
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void splat_linux_fini(splat_subsystem_t *);
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int splat_condvar_id(void);
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int splat_kmem_id(void);
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int splat_mutex_id(void);
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int splat_krng_id(void);
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int splat_rwlock_id(void);
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int splat_taskq_id(void);
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int splat_thread_id(void);
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int splat_time_id(void);
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int splat_vnode_id(void);
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int splat_kobj_id(void);
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int splat_atomic_id(void);
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int splat_list_id(void);
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int splat_generic_id(void);
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int splat_cred_id(void);
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int splat_zlib_id(void);
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int splat_linux_id(void);
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#endif /* _SPLAT_INTERNAL_H */
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