From 3b0d233cbdcd1aba8b00032a9924586307dc6ccd Mon Sep 17 00:00:00 2001 From: Fernando Sahmkow Date: Mon, 31 Jan 2022 10:07:01 +0100 Subject: BufferCache: Find direction of the stream buffer increase. --- src/video_core/buffer_cache/buffer_cache.h | 20 ++++++++++++++------ 1 file changed, 14 insertions(+), 6 deletions(-) (limited to 'src') diff --git a/src/video_core/buffer_cache/buffer_cache.h b/src/video_core/buffer_cache/buffer_cache.h index 048dba4f3..367f30517 100644 --- a/src/video_core/buffer_cache/buffer_cache.h +++ b/src/video_core/buffer_cache/buffer_cache.h @@ -1464,19 +1464,27 @@ typename BufferCache

::OverlapResult BufferCache

::ResolveOverlaps(VAddr cpu overlap_ids.push_back(overlap_id); overlap.Pick(); const VAddr overlap_cpu_addr = overlap.CpuAddr(); - if (overlap_cpu_addr < begin) { + const bool expands_left = overlap_cpu_addr < begin; + if (expands_left) { cpu_addr = begin = overlap_cpu_addr; } - end = std::max(end, overlap_cpu_addr + overlap.SizeBytes()); - + const VAddr overlap_end = overlap_cpu_addr + overlap.SizeBytes(); + const bool expands_right = overlap_end > end; + if (overlap_end > end) { + end = overlap_end; + } stream_score += overlap.StreamScore(); if (stream_score > STREAM_LEAP_THRESHOLD && !has_stream_leap) { // When this memory region has been joined a bunch of times, we assume it's being used // as a stream buffer. Increase the size to skip constantly recreating buffers. has_stream_leap = true; - begin -= PAGE_SIZE * 256; - cpu_addr = begin; - end += PAGE_SIZE * 256; + if (expands_right) { + begin -= PAGE_SIZE * 256; + cpu_addr = begin; + } + if (expands_left) { + end += PAGE_SIZE * 256; + } } } return OverlapResult{ -- cgit v1.2.3