Open source GPL/LGPL release

drivers/gpu/nvgpu/os/linux/kmem_priv.h

@@ -0,0 +1,105 @@
+/*
+ * Copyright (c) 2017-2021, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __KMEM_PRIV_H__
+#define __KMEM_PRIV_H__
+
+#include <nvgpu/rbtree.h>
+#include <nvgpu/lock.h>
+
+struct seq_file;
+
+#define __pstat(s, fmt, msg...)				\
+	do {						\
+		if (s)					\
+			seq_printf(s, fmt, ##msg);	\
+		else					\
+			pr_info(fmt, ##msg);		\
+	} while (false)
+
+#define MAX_STACK_TRACE				20
+
+/*
+ * Linux specific version of the nvgpu_kmem_cache struct. This type is
+ * completely opaque to the rest of the driver.
+ */
+struct nvgpu_kmem_cache {
+	struct gk20a *g;
+	struct kmem_cache *cache;
+
+	/*
+	 * Memory to hold the kmem_cache unique name. Only necessary on our
+	 * k3.10 kernel when not using the SLUB allocator but it's easier to
+	 * just carry this on to newer kernels.
+	 */
+	char name[128];
+};
+
+#ifdef CONFIG_NVGPU_TRACK_MEM_USAGE
+
+struct nvgpu_mem_alloc {
+	struct nvgpu_mem_alloc_tracker *owner;
+
+	void *ip;
+#ifdef NVGPU_SAVE_KALLOC_STACK_TRACES
+	unsigned long stack[MAX_STACK_TRACE];
+	int stack_length;
+#endif
+
+	u64 addr;
+
+	unsigned long size;
+	unsigned long real_size;
+
+	struct nvgpu_rbtree_node allocs_entry;
+};
+
+static inline struct nvgpu_mem_alloc *
+nvgpu_mem_alloc_from_rbtree_node(struct nvgpu_rbtree_node *node)
+{
+	return (struct nvgpu_mem_alloc *)
+	((uintptr_t)node - offsetof(struct nvgpu_mem_alloc, allocs_entry));
+};
+
+/*
+ * Linux specific tracking of vmalloc, kmalloc, etc.
+ */
+struct nvgpu_mem_alloc_tracker {
+	const char *name;
+	struct nvgpu_kmem_cache *allocs_cache;
+	struct nvgpu_rbtree_node *allocs;
+	struct nvgpu_mutex lock;
+
+	u64 bytes_alloced;
+	u64 bytes_freed;
+	u64 bytes_alloced_real;
+	u64 bytes_freed_real;
+	u64 nr_allocs;
+	u64 nr_frees;
+
+	unsigned long min_alloc;
+	unsigned long max_alloc;
+};
+
+void nvgpu_lock_tracker(struct nvgpu_mem_alloc_tracker *tracker);
+void nvgpu_unlock_tracker(struct nvgpu_mem_alloc_tracker *tracker);
+
+void kmem_print_mem_alloc(struct gk20a *g,
+			 struct nvgpu_mem_alloc *alloc,
+			 struct seq_file *s);
+#endif /* CONFIG_NVGPU_TRACK_MEM_USAGE */
+
+#endif /* __KMEM_PRIV_H__ */