1 files changed, 118 insertions, 0 deletions
diff --git a/drivers/gpu/arm/midgard/mali_kbase_mem_profile_debugfs.c b/drivers/gpu/arm/midgard/mali_kbase_mem_profile_debugfs.c
new file mode 100755
index 000000000000..0b19d05c46e8
--- /dev/null
+++ b/drivers/gpu/arm/midgard/mali_kbase_mem_profile_debugfs.c
@@ -0,0 +1,118 @@
+/*
+ *
+ * (C) COPYRIGHT 2012-2015 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
+
+/** 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 it successfully prints data in debugfs entry file, non-zero otherwise
+ */
+static int kbasep_mem_profile_seq_show(struct seq_file *sfile, void *data)
+{
+	struct kbase_context *kctx = sfile->private;
+
+	mutex_lock(&kctx->mem_profile_lock);
+
+	seq_write(sfile, kctx->mem_profile_data, kctx->mem_profile_size);
+
+	seq_putc(sfile, '\n');
+
+	mutex_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,
+};
+
+int kbasep_mem_profile_debugfs_insert(struct kbase_context *kctx, char *data,
+					size_t size)
+{
+	int err = 0;
+
+	mutex_lock(&kctx->mem_profile_lock);
+
+	dev_dbg(kctx->kbdev->dev, "initialised: %d",
+				kctx->mem_profile_initialized);
+
+	if (!kctx->mem_profile_initialized) {
+		if (!debugfs_create_file("mem_profile", S_IRUGO,
+					kctx->kctx_dentry, kctx,
+					&kbasep_mem_profile_debugfs_fops)) {
+			err = -EAGAIN;
+		} else {
+			kctx->mem_profile_initialized = true;
+		}
+	}
+
+	if (kctx->mem_profile_initialized) {
+		kfree(kctx->mem_profile_data);
+		kctx->mem_profile_data = data;
+		kctx->mem_profile_size = size;
+	}
+
+	dev_dbg(kctx->kbdev->dev, "returning: %d, initialised: %d",
+				err, kctx->mem_profile_initialized);
+
+	mutex_unlock(&kctx->mem_profile_lock);
+
+	return err;
+}
+
+void kbasep_mem_profile_debugfs_remove(struct kbase_context *kctx)
+{
+	mutex_lock(&kctx->mem_profile_lock);
+
+	dev_dbg(kctx->kbdev->dev, "initialised: %d",
+				kctx->mem_profile_initialized);
+
+	kfree(kctx->mem_profile_data);
+	kctx->mem_profile_data = NULL;
+	kctx->mem_profile_size = 0;
+
+	mutex_unlock(&kctx->mem_profile_lock);
+}
+
+#else /* CONFIG_DEBUG_FS */
+
+int kbasep_mem_profile_debugfs_insert(struct kbase_context *kctx, char *data,
+					size_t size)
+{
+	kfree(data);
+	return 0;
+}
+#endif /* CONFIG_DEBUG_FS */