kernel_5.10 no rt

hc

2023-12-11 6778948f9de86c3cfaf36725a7c87dcff9ba247f

 kernel/drivers/gpu/arm/bifrost/csf/mali_kbase_csf_tiler_heap.h
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@@ -1,7 +1,7 @@
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 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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 /*
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  *
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- * (C) COPYRIGHT 2019-2021 ARM Limited. All rights reserved.
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+ * (C) COPYRIGHT 2019-2022 ARM Limited. All rights reserved.
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  *
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  * This program is free software and is provided to you under the terms of the
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  * GNU General Public License version 2 as published by the Free Software
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@@ -23,7 +23,6 @@
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 #define _KBASE_CSF_TILER_HEAP_H_
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 #include <mali_kbase.h>
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-
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 /**
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  * kbase_csf_tiler_heap_context_init - Initialize the tiler heaps context for a
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  *                                     GPU address space
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@@ -38,10 +37,10 @@
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  * kbase_csf_tiler_heap_context_term - Terminate the tiler heaps context for a
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  *                                     GPU address space
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  *
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+ * @kctx: Pointer to the kbase context being terminated.
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+ *
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  * This function deletes any chunked tiler heaps that weren't deleted before
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  * context termination.
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- *
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- * @kctx: Pointer to the kbase context being terminated.
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  */
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 void kbase_csf_tiler_heap_context_term(struct kbase_context *kctx);
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@@ -58,6 +57,12 @@
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  * @target_in_flight: Number of render-passes that the driver should attempt to
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  *                    keep in flight for which allocation of new chunks is
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  *                    allowed. Must not be zero.
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+ * @buf_desc_va: Buffer descriptor GPU virtual address. This is a hint for
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+ *               indicating that the caller is intending to perform tiler heap
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+ *               chunks reclaim for those that are hoarded with hardware while
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+ *               the associated shader activites are suspended and the CSGs are
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+ *               off slots. If the referred reclaiming is not desired, can
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+ *               set it to 0.
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  * @gpu_heap_va: Where to store the GPU virtual address of the context that was
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  *               set up for the tiler heap.
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  * @first_chunk_va: Where to store the GPU virtual address of the first chunk
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@@ -66,22 +71,21 @@
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  *
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  * Return: 0 if successful or a negative error code on failure.
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  */
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-int kbase_csf_tiler_heap_init(struct kbase_context *kctx,
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-	u32 chunk_size, u32 initial_chunks, u32 max_chunks,
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-	u16 target_in_flight, u64 *gpu_heap_va,
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-	u64 *first_chunk_va);
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+int kbase_csf_tiler_heap_init(struct kbase_context *kctx, u32 chunk_size, u32 initial_chunks,
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+			      u32 max_chunks, u16 target_in_flight, u64 const buf_desc_va,
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+			      u64 *gpu_heap_va, u64 *first_chunk_va);
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 /**
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- * kbasep_cs_tiler_heap_term - Terminate a chunked tiler memory heap.
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+ * kbase_csf_tiler_heap_term - Terminate a chunked tiler memory heap.
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+ *
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+ * @kctx: Pointer to the kbase context in which the tiler heap was initialized.
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+ * @gpu_heap_va: The GPU virtual address of the context that was set up for the
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+ *               tiler heap.
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  *
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  * This function will terminate a chunked tiler heap and cause all the chunks
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  * (initial and those added during out-of-memory processing) to be freed.
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  * It is the caller's responsibility to ensure no further operations on this
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  * heap will happen before calling this function.
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- *
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- * @kctx: Pointer to the kbase context in which the tiler heap was initialized.
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- * @gpu_heap_va: The GPU virtual address of the context that was set up for the
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- *               tiler heap.
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  *
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  * Return: 0 if successful or a negative error code on failure.
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  */
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@@ -89,12 +93,6 @@
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 /**
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  * kbase_csf_tiler_heap_alloc_new_chunk - Allocate a new chunk for tiler heap.
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- *
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- * This function will allocate a new chunk for the chunked tiler heap depending
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- * on the settings provided by userspace when the heap was created and the
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- * heap's statistics (like number of render passes in-flight).
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- * It would return an appropriate error code if a new chunk couldn't be
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- * allocated.
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  *
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  * @kctx:               Pointer to the kbase context in which the tiler heap was initialized.
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  * @gpu_heap_va:        GPU virtual address of the heap context.
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@@ -105,6 +103,12 @@
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  * @new_chunk_ptr:      Where to store the GPU virtual address & size of the new
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  *                      chunk allocated for the heap.
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  *
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+ * This function will allocate a new chunk for the chunked tiler heap depending
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+ * on the settings provided by userspace when the heap was created and the
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+ * heap's statistics (like number of render passes in-flight).
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+ * It would return an appropriate error code if a new chunk couldn't be
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+ * allocated.
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+ *
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  * Return: 0 if a new chunk was allocated otherwise an appropriate negative
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  *         error code (like -EBUSY when a free chunk is expected to be
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  *         available upon completion of a render pass and -EINVAL when
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@@ -112,4 +116,27 @@
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  */
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 int kbase_csf_tiler_heap_alloc_new_chunk(struct kbase_context *kctx,
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 	u64 gpu_heap_va, u32 nr_in_flight, u32 pending_frag_count, u64 *new_chunk_ptr);
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+
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+/**
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+ * kbase_csf_tiler_heap_scan_kctx_unused_pages - Performs the tiler heap shrinker calim's scan
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+ *                                               functionality.
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+ *
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+ * @kctx:               Pointer to the kbase context for which the tiler heap recalim is to be
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+ *                      operated with.
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+ * @to_free:            Number of pages suggested for the reclaim scan (free) method to reach.
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+ *
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+ * Return: the actual number of pages the scan method has freed from the call.
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+ */
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+u32 kbase_csf_tiler_heap_scan_kctx_unused_pages(struct kbase_context *kctx, u32 to_free);
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+
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+/**
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+ * kbase_csf_tiler_heap_count_kctx_unused_pages - Performs the tiler heap shrinker calim's count
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+ *                                                functionality.
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+ *
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+ * @kctx:               Pointer to the kbase context for which the tiler heap recalim is to be
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+ *                      operated with.
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+ *
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+ * Return: a number of pages that could likely be freed on the subsequent scan method call.
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+ */
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+u32 kbase_csf_tiler_heap_count_kctx_unused_pages(struct kbase_context *kctx);
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 #endif