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# Copyright (c) Meta Platforms, Inc. and affiliates.
# SPDX-License-Identifier: LGPL-2.1-or-later
import re
from drgn import Object
from tests.linux_kernel import online_cpus, skip_unless_have_test_kmod
from tests.linux_kernel.crash_commands import CrashCommandTestCase
@skip_unless_have_test_kmod
class TestTimer(CrashCommandTestCase):
def test_timer(self):
cmd = self.check_crash_command("timer")
self.assertIn("<drgn_test_timer_fn", cmd.stdout)
self.assertIn("timer_base_for_each(", cmd.drgn_option.stdout)
self.assertTrue(cmd.drgn_option.globals["name"], "BASE_")
for variable in (
"jiffies",
"base",
"timer",
"expires",
"tte",
"function",
):
self.assertIsInstance(cmd.drgn_option.globals[variable], Object)
def test_timer_cpu(self):
cpu = min(online_cpus())
cmd = self.check_crash_command(f"timer -C {cpu}")
self.assertEqual(
set(re.findall(r"TIMER_BASES\[([0-9]+)\]", cmd.stdout)), {str(cpu)}
)
self.assertEqual(cmd.drgn_option.globals["base"].cpu, cpu)
def test_hrtimer(self):
cmd = self.check_crash_command("timer -r")
self.assertIn("<drgn_test_hrtimer_fn>", cmd.stdout)
self.assertIn("hrtimer_clock_base_for_each(", cmd.drgn_option.stdout)
for variable in (
"cpu_base",
"clock_base",
"clock",
"current",
"hrtimer",
"softexpires",
"expires",
"tte",
"function",
):
self.assertIsInstance(cmd.drgn_option.globals[variable], Object)
def test_hrtimer_cpu(self):
cpu = min(online_cpus())
cmd = self.check_crash_command(f"timer -r -C {cpu}")
self.assertEqual(set(re.findall(r"CPU: ([0-9]+)", cmd.stdout)), {str(cpu)})
self.assertEqual(cmd.drgn_option.globals["clock_base"].cpu_base.cpu, cpu)
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