Re: [PATCH v6 1/2] tests/functional: add skipLockedMemoryTest decorator

[Thomas Huth]

On 17/04/2025 13.40, Alexandr Moshkov wrote:

Used in future commit to skipping execution of a tests if the system's
locked memory limit is below the required threshold.

Signed-off-by: Alexandr Moshkov <dtalexund...@yandex-team.ru>
---
  tests/functional/qemu_test/__init__.py   |  2 +-
  tests/functional/qemu_test/decorators.py | 18 ++++++++++++++++++
  2 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/tests/functional/qemu_test/__init__.py 
b/tests/functional/qemu_test/__init__.py
index af41c2c6a2..6e666a059f 100644
--- a/tests/functional/qemu_test/__init__.py
+++ b/tests/functional/qemu_test/__init__.py
@@ -15,6 +15,6 @@
  from .linuxkernel import LinuxKernelTest
  from .decorators import skipIfMissingCommands, skipIfNotMachine, \
      skipFlakyTest, skipUntrustedTest, skipBigDataTest, skipSlowTest, \
-    skipIfMissingImports, skipIfOperatingSystem
+    skipIfMissingImports, skipIfOperatingSystem, skipLockedMemoryTest
  from .archive import archive_extract
  from .uncompress import uncompress
diff --git a/tests/functional/qemu_test/decorators.py 
b/tests/functional/qemu_test/decorators.py
index 50d29de533..c0d1567b14 100644
--- a/tests/functional/qemu_test/decorators.py
+++ b/tests/functional/qemu_test/decorators.py
@@ -5,6 +5,7 @@
  import importlib
  import os
  import platform
+import resource
  from unittest import skipIf, skipUnless

from .cmd import which

@@ -131,3 +132,20 @@ def skipIfMissingImports(*args):

return skipUnless(has_imports, 'required import(s) "%s" not installed' %

                                     ", ".join(args))
+
+'''
+Decorator to skip execution of a test if the system's
+locked memory limit is below the required threshold.
+Takes required locked memory threshold in kB.
+Example:
+
+  @skipLockedMemoryTest(2_097_152)
+'''
+def skipLockedMemoryTest(locked_memory):
+    # get memlock hard limit in bytes
+    _, ulimit_memory = resource.getrlimit(resource.RLIMIT_MEMLOCK)
+
+    return skipUnless(
+        ulimit_memory == resource.RLIM_INFINITY or ulimit_memory >= 
locked_memory * 1024,
+        f'Test required {locked_memory} kB of available locked memory',
+    )

Reviewed-by: Thomas Huth <th...@redhat.com>