Add bench-common.libsonnet to share benchmarking building blocks

bench-common.libsonnet

@@ -0,0 +1,66 @@
+{
+  local common = import "common.jsonnet",
+  local utils = import "common-utils.libsonnet",
+
+  # benchmark job base with automatically generated name
+  bench_base:: common.build_base + {
+    # job name automatically generated: <job_prefix>-<suite>-<platform>-<jdk_version>-<os>-<arch>-<job_suffix>
+    # null values are omitted from the list.
+    generated_name:: utils.hyphenize([self.job_prefix, self.suite, self.platform, utils.prefixed_jdk(self.jdk_version), self.os, self.arch, self.job_suffix]),
+    job_prefix:: null,
+    job_suffix:: null,
+    name: self.generated_name,
+    suite:: error "'suite' must be set to generate job name",
+    timelimit: error "build 'timelimit' is not set for "+ self.name +"!",
+    local ol8_image = self.ci_resources.infra.ol8_bench_image,
+    docker+: {
+      "image": ol8_image,
+      "mount_modules": true
+    },
+    should_use_hwloc:: std.objectHasAll(self, "is_numa") && self.is_numa && std.length(std.find("bench", self.targets)) > 0,
+  },
+
+  bench_hw:: {
+    _bench_machine:: {
+      targets+: ["bench"],
+      machine_name:: error "machine_name must be set!",
+      local _machine_name = self.machine_name,
+      capabilities+: [_machine_name],
+      environment+: { "MACHINE_NAME": _machine_name },
+      numa_nodes:: [],
+      is_numa:: std.length(self.numa_nodes) > 0,
+    },
+
+    x52:: common.linux + common.amd64 + self._bench_machine + {
+      machine_name:: "x52",
+      capabilities+: ["no_frequency_scaling", "tmpfs25g"],
+      numa_nodes:: [0, 1],
+      default_numa_node:: 0
+    },
+    xgene3:: common.linux + common.aarch64 + self._bench_machine + {
+      machine_name:: "xgene3",
+      capabilities+: [],
+    },
+    a12c:: common.linux + common.aarch64 + self._bench_machine + {
+      machine_name:: "a12c",
+      capabilities+: ["no_frequency_scaling", "tmpfs25g"],
+      numa_nodes:: [0, 1],
+      default_numa_node:: 0
+    }
+  },
+
+  hwlocIfNuma(numa, cmd, node=0)::
+    if numa then
+      ["hwloc-bind", "--cpubind", "node:"+node, "--membind", "node:"+node, "--"] + cmd
+    else
+      cmd,
+
+  parallelHwloc(cmd_node0, cmd_node1)::
+    // Returns a list of commands that will run cmd_nod0 on NUMA node 0
+    // concurrently with cmd_node1 on NUMA node 1 and then wait for both to complete.
+    [
+      $.hwlocIfNuma(true, cmd_node0, node=0) + ["&"],
+      $.hwlocIfNuma(true, cmd_node1, node=1) + ["&"],
+      ["wait"]
+    ]
+}