libhsakmt: change memory allocation alignment
it is to optimize memory allocation latency, which
changes alignment from 2MB to 1GB.
Signed-off-by: Alex Sierra <alex.sierra@amd.com>
Signed-off-by: Eric Huang <jinhuieric.huang@amd.com>
Change-Id: I7818e9f13b17e2c0992e75b17f978dc03a018a57
[ROCm/ROCR-Runtime commit: 973b35bc06]
This commit is contained in:
Alex Sierra
Eric Huang
@@ -714,10 +714,10 @@ static void *mmap_aperture_allocate_aligned(manageable_aperture_t *aper,
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return NULL;
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}
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/* Align big buffers to the next power-of-2 up to huge page
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* size for flexible fragment size TLB optimizations
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/* Align big buffers to the next power-of-2 up to 1GB
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* size for memory allocation optimization
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*/
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while (align < GPU_HUGE_PAGE_SIZE && size >= (align << 1))
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while (align < GPU_GIANT_PAGE_SIZE && size >= (align << 1))
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align <<= 1;
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/* Add padding to guarantee proper alignment and leave guard
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@@ -72,6 +72,7 @@ extern int PAGE_SHIFT;
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/* 2MB huge page size for 4-level page tables on Vega10 and later GPUs */
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#define GPU_HUGE_PAGE_SIZE (2 << 20)
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#define GPU_GIANT_PAGE_SIZE (1 << 30)
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#define CHECK_PAGE_MULTIPLE(x) \
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do { if ((uint64_t)PORT_VPTR_TO_UINT64(x) % PAGE_SIZE) return HSAKMT_STATUS_INVALID_PARAMETER; } while(0)
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