ci/deqp: Allow specifying the caselist fraction separate from CI_NODE_INDEX.

To increase our VK coverage on a630, we want to have two jobs in parallel,
but we still can't hit full coverage so we need the fractional setting to
be separate from gitlab CI's flags for setting up parallel jobs.

Reviewed-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6971>

.gitlab-ci.yml

@@ -1288,8 +1288,7 @@ arm64_a630_vk:
   extends: arm64_a630_gles2
   variables:
     DEQP_VER: vk
-    CI_NODE_INDEX: 1
-    CI_NODE_TOTAL: 50
+    DEQP_FRACTION: 50
     VK_DRIVER: freedreno
     # Force binning in the main run, which makes sure we render at
     # least 2 bins.  This is the path that impacts the most different
@@ -1304,8 +1303,7 @@ arm64_a630_vk_sysmem:
   extends:
     - arm64_a630_vk
   variables:
-    CI_NODE_INDEX: 1
-    CI_NODE_TOTAL: 10
+    DEQP_FRACTION: 10
     DEQP_CASELIST_FILTER: "dEQP-VK.renderpass.*"
     DEQP_EXPECTED_FAILS: deqp-freedreno-a630-bypass-fails.txt
     TU_DEBUG: sysmem
@@ -1359,8 +1357,7 @@ arm64_a306_gles3:
   variables:
     DEQP_VER: gles3
     DEQP_PARALLEL: 1
-    CI_NODE_INDEX: 1
-    CI_NODE_TOTAL: 25
+    DEQP_FRACTION: 25
 
 # Fractional runs with debug options.  Note that since we're not
 # hitting the iommu faults, we can run in parallel (derive from gles2, not gles3).
@@ -1398,16 +1395,14 @@ arm64_a530_gles3:
   variables:
     DEQP_VER: gles3
     DEQP_PARALLEL: 1
-    CI_NODE_INDEX: 1
-    CI_NODE_TOTAL: 40
+    DEQP_FRACTION: 40
 
 arm64_a530_gles31:
   extends:
     - arm64_a530_gles3
   variables:
     DEQP_VER: gles31
-    CI_NODE_INDEX: 1
-    CI_NODE_TOTAL: 10
+    DEQP_FRACTION: 10
 
 # RADV CI
 .test-radv:

.gitlab-ci/bare-metal/arm64_a630_gles_others.sh

@@ -11,8 +11,7 @@ EXIT=0
 if ! env \
   DEQP_RESULTS_DIR=results/gmem \
   DEQP_VER=gles31 \
-  CI_NODE_INDEX=1 \
-  CI_NODE_TOTAL=5 \
+  DEQP_FRACTION=5 \
   FD_MESA_DEBUG=nobypass \
   /install/deqp-runner.sh; then
     EXIT=1
@@ -22,8 +21,7 @@ fi
 if ! env \
   DEQP_RESULTS_DIR=results/bypass \
   DEQP_VER=gles31 \
-  CI_NODE_INDEX=1 \
-  CI_NODE_TOTAL=5 \
+  DEQP_FRACTION=5 \
   FD_MESA_DEBUG=nogmem \
   DEQP_EXPECTED_FAILS=deqp-freedreno-a630-bypass-fails.txt \
   /install/deqp-runner.sh; then

.gitlab-ci/bare-metal/rootfs-setup.sh

@@ -31,6 +31,7 @@ for var in \
     DEQP_CONFIG \
     DEQP_EXPECTED_FAILS \
     DEQP_EXPECTED_RENDERER \
+    DEQP_FRACTION \
     DEQP_HEIGHT \
     DEQP_NO_SAVE_RESULTS \
     DEQP_FLAKES \

.gitlab-ci/deqp-runner.sh

@@ -57,8 +57,15 @@ else
    SUITE=KHR
 fi
 
-# If the job is parallel, take the corresponding fraction of the caselist.
-# Note: N~M is a gnu sed extension to match every nth line (first line is #1).
+# If the caselist is too long to run in a reasonable amount of time, let the job
+# specify what fraction (1/n) of the caselist we should run.  Note: N~M is a gnu
+# sed extension to match every nth line (first line is #1).
+if [ -n "$DEQP_FRACTION" ]; then
+   sed -ni 1~$DEQP_FRACTION"p" /tmp/case-list.txt
+fi
+
+# If the job is parallel at the gitab job level, take the corresponding fraction
+# of the caselist.
 if [ -n "$CI_NODE_INDEX" ]; then
    sed -ni $CI_NODE_INDEX~$CI_NODE_TOTAL"p" /tmp/case-list.txt
 fi

docs/ci/index.rst

@@ -111,8 +111,7 @@ no ``parallel`` field set and:
 .. code-block:: yaml
 
     variables:
-      CI_NODE_INDEX: 1
-      CI_NODE_TOTAL: 10
+      DEQP_FRACTION: 10
 
 to just run 1/10th of the test list.