text: /*
   *
   * (C) COPYRIGHT ARM Limited. All rights reserved.
   *
   * This program is free software and is provided to you under the terms of the
   * GNU General Public License version 2 as published by the Free Software
   * Foundation, and any use by you of this program is subject to the terms
   * of such GNU licence.
   *
   * A copy of the licence is included with the program, and can also be obtained
   * from Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
   * Boston, MA  02110-1301, USA.
   *
   */
  
  
  
  #include <mali_kbase_gpu_memory_debugfs.h>
  
  #ifdef CONFIG_DEBUG_FS
  
  /* mam_profile file name max length 22 based on format <int>_<int>\0 */
  #define KBASEP_DEBUGFS_FNAME_SIZE_MAX (10+1+10+1)
  
  void kbasep_mem_profile_debugfs_insert(struct kbase_context *kctx, char *data,
  		size_t size)
  {
  	spin_lock(&kctx->mem_profile_lock);
  	kfree(kctx->mem_profile_data);
  	kctx->mem_profile_data = data;
  	kctx->mem_profile_size = size;
  	spin_unlock(&kctx->mem_profile_lock);
  }
  
  /** Show callback for the @c mem_profile debugfs file.
   *
   * This function is called to get the contents of the @c mem_profile debugfs
   * file. This is a report of current memory usage and distribution in userspace.
   *
   * @param sfile The debugfs entry
   * @param data Data associated with the entry
   *
   * @return 0 if successfully prints data in debugfs entry file
   *         -1 if it encountered an error
   */
  static int kbasep_mem_profile_seq_show(struct seq_file *sfile, void *data)
  {
  	struct kbase_context *kctx = sfile->private;
  
  	KBASE_DEBUG_ASSERT(kctx != NULL);
  
  	spin_lock(&kctx->mem_profile_lock);
  	seq_write(sfile, kctx->mem_profile_data, kctx->mem_profile_size);
  	seq_putc(sfile, '\n');
  	spin_unlock(&kctx->mem_profile_lock);
  
  	return 0;
  }
  
  /*
   *  File operations related to debugfs entry for mem_profile
   */
  STATIC int kbasep_mem_profile_debugfs_open(struct inode *in, struct file *file)
  {
  	return single_open(file, kbasep_mem_profile_seq_show, in->i_private);
  }
  
  static const struct file_operations kbasep_mem_profile_debugfs_fops = {
  	.open = kbasep_mem_profile_debugfs_open,
  	.read = seq_read,
  	.llseek = seq_lseek,
  	.release = single_release,
  };
  
  mali_error kbasep_mem_profile_debugfs_add(struct kbase_context *kctx)
  {
  	char name[KBASEP_DEBUGFS_FNAME_SIZE_MAX];
  
  	KBASE_DEBUG_ASSERT(kctx != NULL);
  
  	spin_lock_init(&kctx->mem_profile_lock);
  
  	scnprintf(name, KBASEP_DEBUGFS_FNAME_SIZE_MAX, "%d_%d", kctx->pid,
  			kctx->id);
  
  	kctx->mem_dentry = debugfs_create_file(name, S_IRUGO,
  			kctx->kbdev->memory_profile_directory,
  			kctx, &kbasep_mem_profile_debugfs_fops);
  	if (IS_ERR(kctx->mem_dentry))
  		goto error_out;
  
  	return MALI_ERROR_NONE;
  
  error_out:
  	return MALI_ERROR_FUNCTION_FAILED;
  }
  
  void kbasep_mem_profile_debugfs_remove(struct kbase_context *kctx)
  {
  	KBASE_DEBUG_ASSERT(kctx != NULL);
  
  	spin_lock(&kctx->mem_profile_lock);
  	kfree(kctx->mem_profile_data);
  	kctx->mem_profile_data = NULL;
  	spin_unlock(&kctx->mem_profile_lock);
  
  	if (IS_ERR(kctx->mem_dentry))
  		return;
  	debugfs_remove(kctx->mem_dentry);
  }
  
  #else /* CONFIG_DEBUG_FS */
  
  /**
   * @brief Stub function for when debugfs is disabled
   */
  mali_error kbasep_mem_profile_debugfs_add(struct kbase_context *ctx)
  {
  	return MALI_ERROR_NONE;
  }
  
  /**
   * @brief Stub function for when debugfs is disabled
   */
  void kbasep_mem_profile_debugfs_remove(struct kbase_context *ctx)
  {
  }
  
  /**
   * @brief Stub function for when debugfs is disabled
   */
  void kbasep_mem_profile_debugfs_insert(struct kbase_context *kctx, char *data,
  		size_t size)
  {
  	kfree(data);
  }
  #endif /* CONFIG_DEBUG_FS */
  