tests: Control execution of test job from the caller, not the callee

@danielocfb brought this up in kernel-patches#244.
e.g we should control whether to execute the test job not from the job itself,
but from the caller.

Signed-off-by: Manu Bretelle <chantr4@gmail.com>

.github/workflows/kernel-build-test.yml

@@ -34,7 +34,11 @@ on:
       run_veristat:
         required: true
         type: boolean
-        description: Whether or not to run veristat
+        description: Whether or not to run the veristat job.
+      run_tests:
+        required: true
+        type: boolean
+        description: Whether or not to run the test job.
     secrets:
       AWS_ROLE_ARN:
         required: true
@@ -52,6 +56,7 @@ jobs:
       kernel: ${{ inputs.kernel }}
 
   test:
+    if: ${{ inputs.run_tests }}
     uses: ./.github/workflows/kernel-test.yml
     # Setting name to test here to avoid lengthy autogenerated names due to matrix
     # e.g build-and-test x86_64-gcc / test (test_progs_parallel, true, 30) / test_progs_parallel on x86_64 with gcc

.github/workflows/kernel-test.yml

@@ -34,7 +34,6 @@ on:
 
 jobs:
   test:
-    if: ${{ github.event_name != 'push' }}
     name: ${{ inputs.test }} on ${{ inputs.arch }} with ${{ inputs.toolchain_full }}
     runs-on: ${{ fromJSON(inputs.runs_on) }}
     timeout-minutes: 100

.github/workflows/test.yml

@@ -48,5 +48,7 @@ jobs:
       kernel: ${{ matrix.kernel }}
       tests: ${{ toJSON(matrix.tests) }}
       run_veristat: ${{ matrix.run_veristat }}
+      # We only run tests on pull requests.
+      run_tests: ${{ github.event_name != 'push' }}
     secrets:
       AWS_ROLE_ARN: ${{ secrets.AWS_ROLE_ARN }}