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git://nv-tegra.nvidia.com/linux-nvgpu.git
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707ea45e0f
Implement kmem abstraction and tracking in nvgpu. The abstraction helps move nvgpu's core code away from being Linux dependent and allows kmem allocation tracking to be done for Linux and any other OS supported by nvgpu. Bug 1799159 Bug 1823380 Change-Id: Ieaae4ca1bbd1d4db4a1546616ab8b9fc53a4079d Signed-off-by: Alex Waterman <alexw@nvidia.com> Reviewed-on: http://git-master/r/1283828 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
91 lines
2.1 KiB
C
91 lines
2.1 KiB
C
/*
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* Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __KMEM_PRIV_H__
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#define __KMEM_PRIV_H__
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#include <linux/rbtree.h>
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#define __pstat(s, fmt, msg...) \
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do { \
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if (s) \
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seq_printf(s, fmt, ##msg); \
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else \
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pr_info(fmt, ##msg); \
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} while (0)
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#define MAX_STACK_TRACE 20
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/*
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* Linux specific version of the nvgpu_kmem_cache struct. This type is
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* completely opaque to the rest of the driver.
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*/
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struct nvgpu_kmem_cache {
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struct gk20a *g;
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struct kmem_cache *cache;
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/*
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* Memory to hold the kmem_cache unique name. Only necessary on our
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* k3.10 kernel when not using the SLUB allocator but it's easier to
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* just carry this on to newer kernels.
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*/
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char name[128];
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};
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#ifdef CONFIG_NVGPU_TRACK_MEM_USAGE
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struct nvgpu_mem_alloc {
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struct nvgpu_mem_alloc_tracker *owner;
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void *ip;
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#ifdef __NVGPU_SAVE_KALLOC_STACK_TRACES
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unsigned long stack[MAX_STACK_TRACE];
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int stack_length;
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#endif
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u64 addr;
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unsigned long size;
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unsigned long real_size;
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/* Ugh - linux specific. Will need to be abstracted. */
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struct rb_node allocs_entry;
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};
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/*
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* Linux specific tracking of vmalloc, kmalloc, etc.
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*/
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struct nvgpu_mem_alloc_tracker {
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const char *name;
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struct nvgpu_kmem_cache *allocs_cache;
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struct rb_root allocs;
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struct mutex lock;
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u64 bytes_alloced;
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u64 bytes_freed;
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u64 bytes_alloced_real;
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u64 bytes_freed_real;
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u64 nr_allocs;
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u64 nr_frees;
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unsigned long min_alloc;
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unsigned long max_alloc;
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};
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#endif /* CONFIG_NVGPU_TRACK_MEM_USAGE */
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#endif /* __KMEM_PRIV_H__ */
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