1 files changed, 137 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..b7d709e8696d
--- /dev/null
+++ b/drivers/gpu/arm/midgard/mali_kbase_mem_profile_debugfs.c
@@ -0,0 +1,137 @@
+/*
+ *
+ * (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 */