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authorPauli Nieminen <suokkos@gmail.com>2010-03-01 23:47:35 +0200
committerPauli Nieminen <suokkos@gmail.com>2010-03-01 23:56:35 +0200
commit9a7776696b786180f1d384eb22b928707e74dfca (patch)
tree0cef5c1cd1969b06a4f2be155d00af8728258fdc
parenta379fa8b3059d0a083dc2641a4afb3a33380e275 (diff)
radeon: Reduce number of radeon_bo_map calls that require kernel entry.
DMA buffers are often remapped many times for singel cs. To reduce number of mapping calls ending to kernel dma buffers are mapped when allocated and unmapped when full or in cs flush. This makes indifual mapping calls in other parts of code simple increment/decrement reference count which is faster than entering kernel. This improves Anholt's openarena benchmark from 36 fps to 44 fps.
-rw-r--r--src/mesa/drivers/dri/radeon/radeon_dma.c16
1 files changed, 13 insertions, 3 deletions
diff --git a/src/mesa/drivers/dri/radeon/radeon_dma.c b/src/mesa/drivers/dri/radeon/radeon_dma.c
index d31e4e47dd..22499bc38d 100644
--- a/src/mesa/drivers/dri/radeon/radeon_dma.c
+++ b/src/mesa/drivers/dri/radeon/radeon_dma.c
@@ -184,6 +184,8 @@ void radeonRefillCurrentDmaRegion(radeonContextPtr rmesa, int size)
radeon_print(RADEON_DMA, RADEON_NORMAL, "%s size %d minimum_size %d\n",
__FUNCTION__, size, rmesa->dma.minimum_size);
+ if (!is_empty_list(&rmesa->dma.reserved))
+ radeon_bo_unmap(first_elem(&rmesa->dma.reserved)->bo);
if (is_empty_list(&rmesa->dma.free)
|| last_elem(&rmesa->dma.free)->bo->size < size) {
@@ -211,7 +213,7 @@ again_alloc:
rmesa->dma.current_used = 0;
rmesa->dma.current_vertexptr = 0;
-
+
if (radeon_cs_space_check_with_bo(rmesa->cmdbuf.cs,
first_elem(&rmesa->dma.reserved)->bo,
RADEON_GEM_DOMAIN_GTT, 0))
@@ -221,6 +223,7 @@ again_alloc:
/* Cmd buff have been flushed in radeon_revalidate_bos */
goto again_alloc;
}
+ radeon_bo_map(first_elem(&rmesa->dma.reserved)->bo, 1);
}
/* Allocates a region from rmesa->dma.current. If there isn't enough
@@ -332,6 +335,10 @@ void radeonReleaseDmaRegions(radeonContextPtr rmesa)
/* request updated cs processing information from kernel */
legacy_track_pending(rmesa->radeonScreen->bom, 0);
}
+
+ if (!is_empty_list(&rmesa->dma.reserved))
+ radeon_bo_unmap(first_elem(&rmesa->dma.reserved)->bo);
+
/* move waiting bos to free list.
wait list provides gpu time to handle data before reuse */
foreach_s(dma_bo, temp, &rmesa->dma.wait) {
@@ -349,8 +356,11 @@ void radeonReleaseDmaRegions(radeonContextPtr rmesa)
FREE(dma_bo);
continue;
}
- if (!radeon_bo_is_idle(dma_bo->bo))
+ if (!radeon_bo_is_idle(dma_bo->bo)) {
+ if (rmesa->radeonScreen->driScreen->dri2.enabled)
+ break;
continue;
+ }
remove_from_list(dma_bo);
dma_bo->expire_counter = expire_at;
insert_at_tail(&rmesa->dma.free, dma_bo);
@@ -388,7 +398,7 @@ void rcommon_flush_last_swtcl_prim( GLcontext *ctx )
{
radeonContextPtr rmesa = RADEON_CONTEXT(ctx);
struct radeon_dma *dma = &rmesa->dma;
-
+
if (RADEON_DEBUG & RADEON_IOCTL)
fprintf(stderr, "%s\n", __FUNCTION__);
dma->flush = NULL;