FM / drm

/usr/src/kernels/4.18.0-553.121.1.el8_10.x86_64/include/drm/

/usr/src/kernels/4.18.0-553.121.1.el8_10.x86_64/include/drm

Name	Size	Mode	Actions
bridge/	-	0755	rm
display/	-	0755	rm
i2c/	-	0755	rm
ttm/	-	0755	rm
amd_asic_type.h	2228	0644	edit dl rm
drm_accel.h	2502	0644	edit dl rm
drm_aperture.h	1160	0644	edit dl rm
drm_atomic.h	42345	0644	edit dl rm
drm_atomic_helper.h	9998	0644	edit dl rm
drm_atomic_state_helper.h	4529	0644	edit dl rm
drm_atomic_uapi.h	2111	0644	edit dl rm
drm_audio_component.h	3935	0644	edit dl rm
drm_auth.h	4754	0644	edit dl rm
drm_blend.h	2407	0644	edit dl rm
drm_bridge.h	34436	0644	edit dl rm
drm_bridge_connector.h	405	0644	edit dl rm
drm_buddy.h	4227	0644	edit dl rm
drm_cache.h	3377	0644	edit dl rm
drm_client.h	5166	0644	edit dl rm
drm_color_mgmt.h	3884	0644	edit dl rm
drm_connector.h	63549	0644	edit dl rm
drm_crtc.h	45886	0644	edit dl rm
drm_crtc_helper.h	2567	0644	edit dl rm
drm_damage_helper.h	3408	0644	edit dl rm
drm_debugfs.h	5058	0644	edit dl rm
drm_debugfs_crc.h	2723	0644	edit dl rm
drm_device.h	9416	0644	edit dl rm
drm_displayid.h	4949	0644	edit dl rm
drm_drv.h	19744	0644	edit dl rm
drm_edid.h	20399	0644	edit dl rm
drm_encoder.h	11087	0644	edit dl rm
drm_encoder_slave.h	6614	0644	edit dl rm
drm_fbdev_generic.h	349	0644	edit dl rm
drm_fb_dma_helper.h	575	0644	edit dl rm
drm_fb_helper.h	14380	0644	edit dl rm
drm_file.h	12827	0644	edit dl rm
drm_fixed.h	4993	0644	edit dl rm
drm_flip_work.h	3080	0644	edit dl rm
drm_format_helper.h	3319	0644	edit dl rm
drm_fourcc.h	10096	0644	edit dl rm
drm_framebuffer.h	10856	0644	edit dl rm
drm_gem.h	13646	0644	edit dl rm
drm_gem_atomic_helper.h	5360	0644	edit dl rm
drm_gem_dma_helper.h	9766	0644	edit dl rm
drm_gem_framebuffer_helper.h	1973	0644	edit dl rm
drm_gem_shmem_helper.h	8597	0644	edit dl rm
drm_gem_ttm_helper.h	822	0644	edit dl rm
drm_gem_vram_helper.h	6286	0644	edit dl rm
drm_ioctl.h	6320	0644	edit dl rm
drm_kunit_helpers.h	3072	0644	edit dl rm
drm_lease.h	1010	0644	edit dl rm
drm_legacy.h	9617	0644	edit dl rm
drm_managed.h	3992	0644	edit dl rm
drm_mipi_dbi.h	6953	0644	edit dl rm
drm_mipi_dsi.h	13449	0644	edit dl rm
drm_mm.h	17950	0644	edit dl rm
drm_modes.h	20381	0644	edit dl rm
drm_modeset_helper.h	1814	0644	edit dl rm
drm_modeset_helper_vtables.h	59622	0644	edit dl rm
drm_modeset_lock.h	7244	0644	edit dl rm
drm_mode_config.h	33729	0644	edit dl rm
drm_mode_object.h	5587	0644	edit dl rm
drm_module.h	3808	0644	edit dl rm
drm_of.h	5016	0644	edit dl rm
drm_panel.h	7100	0644	edit dl rm
drm_pciids.h	62502	0644	edit dl rm
drm_plane.h	30811	0644	edit dl rm
drm_plane_helper.h	2391	0644	edit dl rm
drm_prime.h	4162	0644	edit dl rm
drm_print.h	19215	0644	edit dl rm
drm_privacy_screen_consumer.h	1983	0644	edit dl rm
drm_privacy_screen_driver.h	3058	0644	edit dl rm
drm_privacy_screen_machine.h	1281	0644	edit dl rm
drm_probe_helper.h	1607	0644	edit dl rm
drm_property.h	12042	0644	edit dl rm
drm_rect.h	7338	0644	edit dl rm
drm_self_refresh_helper.h	594	0644	edit dl rm
drm_simple_kms_helper.h	9744	0644	edit dl rm
drm_syncobj.h	3943	0644	edit dl rm
drm_sysfs.h	515	0644	edit dl rm
drm_util.h	2642	0644	edit dl rm
drm_utils.h	504	0644	edit dl rm
drm_vblank.h	9255	0644	edit dl rm
drm_vblank_work.h	1956	0644	edit dl rm
drm_vma_manager.h	8428	0644	edit dl rm
drm_writeback.h	4552	0644	edit dl rm
gma_drm.h	413	0644	edit dl rm
gpu_scheduler.h	19364	0644	edit dl rm
gud.h	11934	0644	edit dl rm
i915_component.h	1825	0644	edit dl rm
i915_drm.h	3655	0644	edit dl rm
i915_mei_hdcp_interface.h	5907	0644	edit dl rm
i915_pciids.h	24003	0644	edit dl rm
i915_pxp_tee_interface.h	1250	0644	edit dl rm
intel-gtt.h	1015	0644	edit dl rm
intel_lpe_audio.h	1758	0644	edit dl rm
spsc_queue.h	3131	0644	edit dl rm
task_barrier.h	3020	0644	edit dl rm

Edit: /usr/src/kernels/4.18.0-553.121.1.el8_10.x86_64/include/drm/drm_buddy.h (4227B)

/* SPDX-License-Identifier: MIT */
/*
 * Copyright © 2021 Intel Corporation
 */

#ifndef __DRM_BUDDY_H__
#define __DRM_BUDDY_H__

#include <linux/bitops.h>
#include <linux/list.h>
#include <linux/slab.h>
#include <linux/sched.h>

#include <drm/drm_print.h>

#define range_overflows(start, size, max) ({ \
	typeof(start) start__ = (start); \
	typeof(size) size__ = (size); \
	typeof(max) max__ = (max); \
	(void)(&start__ == &size__); \
	(void)(&start__ == &max__); \
	start__ >= max__ || size__ > max__ - start__; \
})

#define DRM_BUDDY_RANGE_ALLOCATION (1 << 0)
#define DRM_BUDDY_TOPDOWN_ALLOCATION (1 << 1)

struct drm_buddy_block {
#define DRM_BUDDY_HEADER_OFFSET GENMASK_ULL(63, 12)
#define DRM_BUDDY_HEADER_STATE  GENMASK_ULL(11, 10)
#define   DRM_BUDDY_ALLOCATED	   (1 << 10)
#define   DRM_BUDDY_FREE	   (2 << 10)
#define   DRM_BUDDY_SPLIT	   (3 << 10)
/* Free to be used, if needed in the future */
#define DRM_BUDDY_HEADER_UNUSED GENMASK_ULL(9, 6)
#define DRM_BUDDY_HEADER_ORDER  GENMASK_ULL(5, 0)
	u64 header;

struct drm_buddy_block *left;
	struct drm_buddy_block *right;
	struct drm_buddy_block *parent;

void *private; /* owned by creator */

/*
	 * While the block is allocated by the user through drm_buddy_alloc*,
	 * the user has ownership of the link, for example to maintain within
	 * a list, if so desired. As soon as the block is freed with
	 * drm_buddy_free* ownership is given back to the mm.
	 */
	struct list_head link;
	struct list_head tmp_link;
};

/* Order-zero must be at least PAGE_SIZE */
#define DRM_BUDDY_MAX_ORDER (63 - PAGE_SHIFT)

/*
 * Binary Buddy System.
 *
 * Locking should be handled by the user, a simple mutex around
 * drm_buddy_alloc* and drm_buddy_free* should suffice.
 */
struct drm_buddy {
	/* Maintain a free list for each order. */
	struct list_head *free_list;

/*
	 * Maintain explicit binary tree(s) to track the allocation of the
	 * address space. This gives us a simple way of finding a buddy block
	 * and performing the potentially recursive merge step when freeing a
	 * block.  Nodes are either allocated or free, in which case they will
	 * also exist on the respective free list.
	 */
	struct drm_buddy_block **roots;

/*
	 * Anything from here is public, and remains static for the lifetime of
	 * the mm. Everything above is considered do-not-touch.
	 */
	unsigned int n_roots;
	unsigned int max_order;

/* Must be at least PAGE_SIZE */
	u64 chunk_size;
	u64 size;
	u64 avail;
};

static inline u64
drm_buddy_block_offset(struct drm_buddy_block *block)
{
	return block->header & DRM_BUDDY_HEADER_OFFSET;
}

static inline unsigned int
drm_buddy_block_order(struct drm_buddy_block *block)
{
	return block->header & DRM_BUDDY_HEADER_ORDER;
}

static inline unsigned int
drm_buddy_block_state(struct drm_buddy_block *block)
{
	return block->header & DRM_BUDDY_HEADER_STATE;
}

static inline bool
drm_buddy_block_is_allocated(struct drm_buddy_block *block)
{
	return drm_buddy_block_state(block) == DRM_BUDDY_ALLOCATED;
}

static inline bool
drm_buddy_block_is_free(struct drm_buddy_block *block)
{
	return drm_buddy_block_state(block) == DRM_BUDDY_FREE;
}

static inline bool
drm_buddy_block_is_split(struct drm_buddy_block *block)
{
	return drm_buddy_block_state(block) == DRM_BUDDY_SPLIT;
}

static inline u64
drm_buddy_block_size(struct drm_buddy *mm,
		     struct drm_buddy_block *block)
{
	return mm->chunk_size << drm_buddy_block_order(block);
}

int drm_buddy_init(struct drm_buddy *mm, u64 size, u64 chunk_size);

void drm_buddy_fini(struct drm_buddy *mm);

struct drm_buddy_block *
drm_get_buddy(struct drm_buddy_block *block);

int drm_buddy_alloc_blocks(struct drm_buddy *mm,
			   u64 start, u64 end, u64 size,
			   u64 min_page_size,
			   struct list_head *blocks,
			   unsigned long flags);

int drm_buddy_block_trim(struct drm_buddy *mm,
			 u64 new_size,
			 struct list_head *blocks);

void drm_buddy_free_block(struct drm_buddy *mm, struct drm_buddy_block *block);

void drm_buddy_free_list(struct drm_buddy *mm, struct list_head *objects);

void drm_buddy_print(struct drm_buddy *mm, struct drm_printer *p);
void drm_buddy_block_print(struct drm_buddy *mm,
			   struct drm_buddy_block *block,
			   struct drm_printer *p);

#endif

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