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# Copyright (c) Meta Platforms, Inc. and affiliates.
# SPDX-License-Identifier: LGPL-2.1-or-later
from drgn import Object
from drgn.commands import CommandArgumentError
from tests.linux_kernel import skip_unless_have_test_kmod
from tests.linux_kernel.crash_commands import CrashCommandTestCase
class TestWaitq(CrashCommandTestCase):
@skip_unless_have_test_kmod
def test_empty(self):
cmd = self.check_crash_command("waitq drgn_test_empty_waitq")
self.assertIn("is empty", cmd.stdout)
self.assertIn("waitqueue_for_each_task(", cmd.drgn_option.stdout)
@skip_unless_have_test_kmod
def test_non_empty(self):
cmd = self.check_crash_command("waitq drgn_test_waitq")
self.assertIn('COMMAND: "drgn_test_', cmd.stdout)
self.assertIn("waitqueue_for_each_task(", cmd.drgn_option.stdout)
for variable in (
"task",
"pid",
"command",
):
self.assertIsInstance(cmd.drgn_option.globals[variable], Object)
self.assertIsInstance(cmd.drgn_option.globals["cpu"], int)
@skip_unless_have_test_kmod
def test_empty_symbol(self):
address = self.prog.symbol("drgn_test_empty_waitq").address
cmd = self.check_crash_command(f"waitq {address:x}")
self.assertIn("is empty", cmd.stdout)
self.assertIn("waitqueue_for_each_task(", cmd.drgn_option.stdout)
@skip_unless_have_test_kmod
def test_struct(self):
address = self.prog.symbol("drgn_test_waitq_container").address
cmd = self.check_crash_command(
f"waitq drgn_test_waitq_container_struct.waitq {address:x}"
)
self.assertIn("is empty", cmd.stdout)
self.assertIn("waitqueue_for_each_task(", cmd.drgn_option.stdout)
def test_no_arguments(self):
self.assertRaisesRegex(
CommandArgumentError,
"is required",
self.run_crash_command,
"waitq",
)
def test_too_many_arguments(self):
self.assertRaisesRegex(
CommandArgumentError,
"unrecognized",
self.run_crash_command,
"waitq foo.bar abcd1234 baz",
)
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