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While the splat tests were originally designed to stress test the Solaris primatives. I am extending them to include some kernel compatibility tests. Certain linux APIs have changed frequently. These tests ensure that added compatibility is working properly and no unnoticed regression have slipped in. Test 1 and 2 add basic regression tests for shrink_icache_memory and shrink_dcache_memory. These are simply functional tests to ensure we can call these functions safely. Checking for correct behavior is more difficult since other running processes will influence the behavior. However, these functions are provided by the kernel so if we can successfully call them we assume they are working correctly. Test 3 checks that shrinker functions are being registered and called correctly. As of Linux 3.0 the shrinker API has changed four different times so I felt the need to add a trivial test case to ensure each variant works as expected.
260 lines
9.6 KiB
C
260 lines
9.6 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://github.com/behlendorf/spl/>.
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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 <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/string.h>
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#include <linux/errno.h>
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#include <linux/slab.h>
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#include <linux/sched.h>
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#include <linux/elf.h>
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#include <linux/limits.h>
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#include <linux/version.h>
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#include <linux/vmalloc.h>
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#include <linux/module.h>
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#include <linux/device.h>
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#include <linux/list.h>
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#include <linux/swap.h>
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#include <linux/delay.h>
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#include <asm/ioctls.h>
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#include <asm/uaccess.h>
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#include <stdarg.h>
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#include <sys/callb.h>
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#include <sys/condvar.h>
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#include <sys/cred.h>
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#include <sys/sysmacros.h>
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#include <sys/kmem.h>
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#include <sys/kstat.h>
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#include <sys/mutex.h>
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#include <sys/random.h>
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#include <sys/rwlock.h>
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#include <sys/taskq.h>
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#include <sys/thread.h>
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#include <sys/time.h>
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#include <sys/timer.h>
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#include <sys/types.h>
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#include <sys/kobj.h>
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#include <sys/atomic.h>
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#include <sys/list.h>
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#include <sys/sunddi.h>
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#include <sys/zmod.h>
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#include <linux/cdev.h>
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#include "spl-device.h"
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#include "spl-debug.h"
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#include "splat-ctl.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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spinlock_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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spin_lock(&_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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spin_unlock(&_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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