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[S390] arch/s390/kernel/debug.c: use mutex instead of semaphore 

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
hifive-unleashed-5.1
Christoph Hellwig 2007-05-31 17:38:03 +02:00 committed by Martin Schwidefsky
parent 3006d7c671
commit e11f0d04c6
1 changed files with 11 additions and 11 deletions
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22
arch/s390/kernel/debug.c
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@ -163,7 +163,7 @@ unsigned int debug_feature_version = __DEBUG_FEATURE_VERSION;
static debug_info_t *debug_area_first = NULL;
static debug_info_t *debug_area_last = NULL;
static DECLARE_MUTEX(debug_lock);
static DEFINE_MUTEX(debug_mutex);
static int initialized;
@ -576,7 +576,7 @@ debug_input(struct file *file, const char __user *user_buf, size_t length,
int rc = 0;
file_private_info_t *p_info;
down(&debug_lock);
mutex_lock(&debug_mutex);
p_info = ((file_private_info_t *) file->private_data);
if (p_info->view->input_proc)
rc = p_info->view->input_proc(p_info->debug_info_org,
@ -584,7 +584,7 @@ debug_input(struct file *file, const char __user *user_buf, size_t length,
length, offset);
else
rc = -EPERM;
up(&debug_lock);
mutex_unlock(&debug_mutex);
return rc; /* number of input characters */
}
@ -602,7 +602,7 @@ debug_open(struct inode *inode, struct file *file)
file_private_info_t *p_info;
debug_info_t *debug_info, *debug_info_snapshot;
down(&debug_lock);
mutex_lock(&debug_mutex);
debug_info = file->f_path.dentry->d_inode->i_private;
/* find debug view */
for (i = 0; i < DEBUG_MAX_VIEWS; i++) {
@ -653,7 +653,7 @@ found:
file->private_data = p_info;
debug_info_get(debug_info);
out:
up(&debug_lock);
mutex_unlock(&debug_mutex);
return rc;
}
@ -688,7 +688,7 @@ debug_register (char *name, int pages_per_area, int nr_areas, int buf_size)
if (!initialized)
BUG();
down(&debug_lock);
mutex_lock(&debug_mutex);
/* create new debug_info */
@ -702,7 +702,7 @@ out:
if (!rc){
printk(KERN_ERR "debug: debug_register failed for %s\n",name);
}
up(&debug_lock);
mutex_unlock(&debug_mutex);
return rc;
}
@ -716,9 +716,9 @@ debug_unregister(debug_info_t * id)
{
if (!id)
goto out;
down(&debug_lock);
mutex_lock(&debug_mutex);
debug_info_put(id);
up(&debug_lock);
mutex_unlock(&debug_mutex);
out:
return;
@ -1054,11 +1054,11 @@ __init debug_init(void)
int rc = 0;
s390dbf_sysctl_header = register_sysctl_table(s390dbf_dir_table);
down(&debug_lock);
mutex_lock(&debug_mutex);
debug_debugfs_root_entry = debugfs_create_dir(DEBUG_DIR_ROOT,NULL);
printk(KERN_INFO "debug: Initialization complete\n");
initialized = 1;
up(&debug_lock);
mutex_unlock(&debug_mutex);
return rc;
}