On Wed, 2010-03-10 at 20:42 +0200, Pauli Nieminen wrote:
> bo->referenced_in_cs is checked if bo is already in cs. Adding and removing
> reference in bo is done with atomic operations to allow parallel access to a
> bo from multiple contexts.
>
> cs->id generation code quarentees there is not duplicated ids which limits
> number of cs->ids to 32. If there is more cs objects rest will get id 0.
>
> This optimization decreases cs_write_reloc share of torcs profiling from 4.3%
> to 2.6%.
>
> Signed-off-by: Pauli Nieminen <suok...@gmail.com>
This also needs something like the below for configure to verify that
atomic ops are available.
diff --git a/configure.ac b/configure.ac
index fe00176..e419dd7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -173,7 +173,7 @@ if test "x$HAVE_LIBUDEV" = xyes; then
fi
AM_CONDITIONAL(HAVE_LIBUDEV, [test "x$HAVE_LIBUDEV" = xyes])
-if test "x$INTEL" != "xno"; then
+if test "x$INTEL" != "xno" || test "x$RADEON" != "xno"; then
# Check for atomic intrinsics
AC_CACHE_CHECK([for native atomic primitives], drm_cv_atomic_primitives,
[
@@ -206,13 +206,23 @@ if test "x$INTEL" != "xno"; then
fi
if test "x$drm_cv_atomic_primitives" = "xnone"; then
- if test "x$INTEL" != "xauto"; then
+ if test "x$INTEL" = "xyes"; then
AC_MSG_ERROR([libdrm_intel depends upon atomic operations,
which were not found for your compiler/cpu. Try compiling with -march=native,
or install the libatomics-op-dev package, or, failing both of those, disable
support for Intel GPUs by passing --disable-intel to ./configure])
else
INTEL=no
fi
+ if test "x$RADEON" = "xyes"; then
+ AC_MSG_ERROR([libdrm_radeon depends upon atomic operations,
which were not found for your compiler/cpu. Try compiling with -march=native,
or install the libatomics-op-dev package, or, failing both of those, disable
support for Radeon GPUs by passing --disable-radeon to ./configure])
+ else
+ RADEON=no
+ fi
else
- INTEL=yes
+ if test "x$INTEL" != "xno"; then
+ INTEL=yes
+ fi
+ if test "x$RADEON" != "xno"; then
+ RADEON=yes
+ fi
fi
fi
--
Earthling Michel Dänzer | http://www.vmware.com
Libre software enthusiast | Debian, X and DRI developer
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