mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf.git
synced 2026-04-03 23:38:12 -04:00
bb33013bdd
Add a parameter to enable dma-buf heaps allocation accounting using cgroup for heaps that implement it. It is disabled by default as doing so incurs caveats based on how memcg currently accounts for shared buffers. Signed-off-by: Eric Chanudet <echanude@redhat.com> Reviewed-by: T.J. Mercier <tjmercier@google.com> Reviewed-by: Christian König <christian.koenig@amd.com> Reviewed-by: Maxime Ripard <mripard@kernel.org> Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org> Link: https://patch.msgid.link/20260116-dmabuf-heap-system-memcg-v3-1-ecc6b62cc446@redhat.com
52 lines
1.2 KiB
C
52 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* DMABUF Heaps Allocation Infrastructure
|
|
*
|
|
* Copyright (C) 2011 Google, Inc.
|
|
* Copyright (C) 2019 Linaro Ltd.
|
|
*/
|
|
|
|
#ifndef _DMA_HEAPS_H
|
|
#define _DMA_HEAPS_H
|
|
|
|
#include <linux/types.h>
|
|
|
|
struct dma_heap;
|
|
|
|
/**
|
|
* struct dma_heap_ops - ops to operate on a given heap
|
|
* @allocate: allocate dmabuf and return struct dma_buf ptr
|
|
*
|
|
* allocate returns dmabuf on success, ERR_PTR(-errno) on error.
|
|
*/
|
|
struct dma_heap_ops {
|
|
struct dma_buf *(*allocate)(struct dma_heap *heap,
|
|
unsigned long len,
|
|
u32 fd_flags,
|
|
u64 heap_flags);
|
|
};
|
|
|
|
/**
|
|
* struct dma_heap_export_info - information needed to export a new dmabuf heap
|
|
* @name: used for debugging/device-node name
|
|
* @ops: ops struct for this heap
|
|
* @priv: heap exporter private data
|
|
*
|
|
* Information needed to export a new dmabuf heap.
|
|
*/
|
|
struct dma_heap_export_info {
|
|
const char *name;
|
|
const struct dma_heap_ops *ops;
|
|
void *priv;
|
|
};
|
|
|
|
void *dma_heap_get_drvdata(struct dma_heap *heap);
|
|
|
|
const char *dma_heap_get_name(struct dma_heap *heap);
|
|
|
|
struct dma_heap *dma_heap_add(const struct dma_heap_export_info *exp_info);
|
|
|
|
extern bool mem_accounting;
|
|
|
|
#endif /* _DMA_HEAPS_H */
|