diff options
| -rw-r--r-- | kernel/dma/debug.c | 88 |
1 files changed, 12 insertions, 76 deletions
diff --git a/kernel/dma/debug.c b/kernel/dma/debug.c index 23cf5361bcf1..56cd836a902c 100644 --- a/kernel/dma/debug.c +++ b/kernel/dma/debug.c @@ -134,17 +134,6 @@ static u32 nr_total_entries; /* number of preallocated entries requested by kernel cmdline */ static u32 nr_prealloc_entries = PREALLOC_DMA_DEBUG_ENTRIES; -/* debugfs dentry's for the stuff above */ -static struct dentry *dma_debug_dent __read_mostly; -static struct dentry *global_disable_dent __read_mostly; -static struct dentry *error_count_dent __read_mostly; -static struct dentry *show_all_errors_dent __read_mostly; -static struct dentry *show_num_errors_dent __read_mostly; -static struct dentry *num_free_entries_dent __read_mostly; -static struct dentry *min_free_entries_dent __read_mostly; -static struct dentry *nr_total_entries_dent __read_mostly; -static struct dentry *filter_dent __read_mostly; - /* per-driver filter related state */ #define NAME_MAX_LEN 64 @@ -840,66 +829,18 @@ static const struct file_operations filter_fops = { .llseek = default_llseek, }; -static int dma_debug_fs_init(void) +static void dma_debug_fs_init(void) { - dma_debug_dent = debugfs_create_dir("dma-api", NULL); - if (!dma_debug_dent) { - pr_err("can not create debugfs directory\n"); - return -ENOMEM; - } - - global_disable_dent = debugfs_create_bool("disabled", 0444, - dma_debug_dent, - &global_disable); - if (!global_disable_dent) - goto out_err; - - error_count_dent = debugfs_create_u32("error_count", 0444, - dma_debug_dent, &error_count); - if (!error_count_dent) - goto out_err; - - show_all_errors_dent = debugfs_create_u32("all_errors", 0644, - dma_debug_dent, - &show_all_errors); - if (!show_all_errors_dent) - goto out_err; - - show_num_errors_dent = debugfs_create_u32("num_errors", 0644, - dma_debug_dent, - &show_num_errors); - if (!show_num_errors_dent) - goto out_err; - - num_free_entries_dent = debugfs_create_u32("num_free_entries", 0444, - dma_debug_dent, - &num_free_entries); - if (!num_free_entries_dent) - goto out_err; - - min_free_entries_dent = debugfs_create_u32("min_free_entries", 0444, - dma_debug_dent, - &min_free_entries); - if (!min_free_entries_dent) - goto out_err; - - nr_total_entries_dent = debugfs_create_u32("nr_total_entries", 0444, - dma_debug_dent, - &nr_total_entries); - if (!nr_total_entries_dent) - goto out_err; - - filter_dent = debugfs_create_file("driver_filter", 0644, - dma_debug_dent, NULL, &filter_fops); - if (!filter_dent) - goto out_err; - - return 0; - -out_err: - debugfs_remove_recursive(dma_debug_dent); - - return -ENOMEM; + struct dentry *dentry = debugfs_create_dir("dma-api", NULL); + + debugfs_create_bool("disabled", 0444, dentry, &global_disable); + debugfs_create_u32("error_count", 0444, dentry, &error_count); + debugfs_create_u32("all_errors", 0644, dentry, &show_all_errors); + debugfs_create_u32("num_errors", 0644, dentry, &show_num_errors); + debugfs_create_u32("num_free_entries", 0444, dentry, &num_free_entries); + debugfs_create_u32("min_free_entries", 0444, dentry, &min_free_entries); + debugfs_create_u32("nr_total_entries", 0444, dentry, &nr_total_entries); + debugfs_create_file("driver_filter", 0644, dentry, NULL, &filter_fops); } static int device_dma_allocations(struct device *dev, struct dma_debug_entry **out_entry) @@ -985,12 +926,7 @@ static int dma_debug_init(void) spin_lock_init(&dma_entry_hash[i].lock); } - if (dma_debug_fs_init() != 0) { - pr_err("error creating debugfs entries - disabling\n"); - global_disable = true; - - return 0; - } + dma_debug_fs_init(); nr_pages = DIV_ROUND_UP(nr_prealloc_entries, DMA_DEBUG_DYNAMIC_ENTRIES); for (i = 0; i < nr_pages; ++i) |