Tool to check supported hugepagesize

lisa/tools/__init__.py

@@ -66,6 +66,7 @@
 from .lsvmbus import Lsvmbus
 from .make import Make
 from .mdadm import Mdadm
+from .hugepages import Hugepages
 from .mkdir import Mkdir
 from .mkfs import FileSystem, Mkfs, Mkfsext, Mkfsxfs
 from .modinfo import Modinfo
@@ -158,6 +159,7 @@
     "Iperf3",
     "HibernationSetup",
     "Hostname",
+    "Hugepages",
     "Hwclock",
     "HyperV",
     "InterruptInspector",

lisa/tools/hugepages.py

@@ -0,0 +1,32 @@
+# Copyright (c) Microsoft Corporation.
+# Licensed under the MIT license.
+import re
+from typing import Any, Set
+
+from lisa.executable import Tool
+from lisa.util import LisaException
+
+PATTERN_HUGEPAGE = re.compile(
+    r"^hugepages-(?P<hugepage_size_in_kb>\d+)kB",
+)
+
+class Hugepages(Tool):
+    @property
+    def command(self) -> str:
+        return "ls /sys/devices/system/node/node*/hugepages"
+
+    @property
+    def can_install(self) -> bool:
+        return False
+
+    def _initialize(self, *args: Any, **kwargs: Any) -> None:
+        self._command = "ls /sys/devices/system/node/node*/hugepages"
+        self._hugepage_sizes = set()
+
+    def get_hugepage_sizes_in_kB(self):
+        hugepage_size_dir_names = self.run("", shell=True)
+        # e.g. hugepages-16777216kB  hugepages-2048kB  hugepages-524288kB
+        for hugepage_size_dir_name in hugepage_size_dir_names.stdout.split():
+            matched_hugepage = PATTERN_HUGEPAGE.match(hugepage_size_dir_name)
+            self._hugepage_sizes.add(matched_hugepage.group("hugepage_size_in_kb"))
+        return self._hugepage_sizes

microsoft/testsuites/dpdk/dpdkutil.py

@@ -35,6 +35,7 @@
     Lscpu,
     Lsmod,
     Lspci,
+    Hugepages,
     Modprobe,
     Mount,
     Ntttcp,
@@ -99,6 +100,12 @@ def __init__(self, _node: Node, _testpmd: DpdkTestpmd) -> None:
 def init_hugepages(node: Node, enable_gibibyte_hugepages: bool = False) -> None:
     mount = node.tools[Mount]
     if enable_gibibyte_hugepages:
+        hugepages = node.tools[Hugepages]
+        hugepage_sizes_in_kB = hugepages.get_hugepage_sizes_in_kB()
+        if "1048576" not in hugepage_sizes_in_kB:
+            raise SkippedException(
+                f"Supported hugepage sizes in kB: {hugepage_sizes_in_kB}. 1048576 kB is not available"
+            )
         mount.mount(
             name="nodev",
             point="/mnt/huge-1G",