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https://github.com/Ysurac/openmptcprouter.git
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46 lines
1.5 KiB
Diff
46 lines
1.5 KiB
Diff
From f1dc89efa80fab8818b3d68c8f5438ae11a7f5dc Mon Sep 17 00:00:00 2001
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From: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
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Date: Wed, 17 Jul 2024 09:33:21 +0100
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Subject: [PATCH 519/697] dma-buf: system_heap: Allow specifying maximum
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allocation order
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system_heap.max_order=<uint>
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Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
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---
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drivers/dma-buf/heaps/system_heap.c | 10 +++++++++-
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1 file changed, 9 insertions(+), 1 deletion(-)
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--- a/drivers/dma-buf/heaps/system_heap.c
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+++ b/drivers/dma-buf/heaps/system_heap.c
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@@ -54,6 +54,11 @@ static gfp_t order_flags[] = {HIGH_ORDER
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static const unsigned int orders[] = {8, 4, 0};
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#define NUM_ORDERS ARRAY_SIZE(orders)
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+static unsigned int module_max_order = orders[0];
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+
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+module_param_named(max_order, module_max_order, uint, 0400);
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+MODULE_PARM_DESC(max_order, "Maximum allocation order override.");
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+
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static struct sg_table *dup_sg_table(struct sg_table *table)
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{
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struct sg_table *new_table;
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@@ -339,7 +344,7 @@ static struct dma_buf *system_heap_alloc
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struct system_heap_buffer *buffer;
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DEFINE_DMA_BUF_EXPORT_INFO(exp_info);
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unsigned long size_remaining = len;
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- unsigned int max_order = orders[0];
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+ unsigned int max_order = module_max_order;
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struct dma_buf *dmabuf;
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struct sg_table *table;
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struct scatterlist *sg;
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@@ -433,6 +438,9 @@ static int system_heap_create(void)
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if (IS_ERR(sys_heap))
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return PTR_ERR(sys_heap);
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+ if (module_max_order > orders[0])
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+ module_max_order = orders[0];
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+
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return 0;
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}
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module_init(system_heap_create);
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