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Shmems are allocated internally and are only for CPU access. They can be easily cached. Venus have 4 sources of shmem allocations - the ring buffer - the reply stream - the indirection submission upload cs - one cs for each vn_command_buffer The first one is allocated only once. The other three reallocate occasionally. The frequencies depend on the workloads. Signed-off-by: Chia-I Wu <olvaffe@gmail.com> Reviewed-by: Ryan Neph <ryanneph@google.com> Reviewed-by: Yiwei Zhang <zzyiwei@chromium.org> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14179>
57 lines
1.4 KiB
C
57 lines
1.4 KiB
C
/*
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* Copyright 2021 Google LLC
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* SPDX-License-Identifier: MIT
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*/
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#ifndef VN_RENDERER_INTERNAL_H
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#define VN_RENDERER_INTERNAL_H
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#include "vn_renderer.h"
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typedef void (*vn_renderer_shmem_cache_destroy_func)(
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struct vn_renderer *renderer, struct vn_renderer_shmem *shmem);
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struct vn_renderer_shmem_cache {
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bool initialized;
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struct vn_renderer *renderer;
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vn_renderer_shmem_cache_destroy_func destroy_func;
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simple_mtx_t mutex;
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/* cache shmems up to 2^26 in size (see choose_bucket) */
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struct vn_renderer_shmem_bucket {
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struct list_head shmems;
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} buckets[27];
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/* which buckets have shmems */
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uint32_t bucket_mask;
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struct {
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uint32_t cache_skip_count;
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uint32_t cache_hit_count;
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uint32_t cache_miss_count;
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} debug;
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};
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void
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vn_renderer_shmem_cache_init(
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struct vn_renderer_shmem_cache *cache,
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struct vn_renderer *renderer,
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vn_renderer_shmem_cache_destroy_func destroy_func);
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void
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vn_renderer_shmem_cache_fini(struct vn_renderer_shmem_cache *cache);
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bool
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vn_renderer_shmem_cache_add(struct vn_renderer_shmem_cache *cache,
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struct vn_renderer_shmem *shmem);
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struct vn_renderer_shmem *
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vn_renderer_shmem_cache_get(struct vn_renderer_shmem_cache *cache,
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size_t size);
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void
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vn_renderer_shmem_cache_debug_dump(struct vn_renderer_shmem_cache *cache);
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#endif /* VN_RENDERER_INTERNAL_H */
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