kernel/linux.git/tools/testing/selftests/watchdog, branch v6.1.168

selftests: watchdog: skip ping loop if WDIOF_KEEPALIVEPING not supported

2025-10-15T09:56:28+00:00

[ Upstream commit e8cfc524eaf3c0ed88106177edb6961e202e6716 ] Check if watchdog device supports WDIOF_KEEPALIVEPING option before entering keep_alive() ping test loop. Fix watchdog-test silently looping if ioctl based ping is not supported by the device. Exit from test in such case instead of getting stuck in loop executing failing keep_alive() watchdog_info: identity: m41t93 rtc Watchdog firmware_version: 0 Support/Status: Set timeout (in seconds) Support/Status: Watchdog triggers a management or other external alarm not a reboot Watchdog card disabled. Watchdog timeout set to 5 seconds. Watchdog ping rate set to 2 seconds. Watchdog card enabled. WDIOC_KEEPALIVE not supported by this device without this change Watchdog card disabled. Watchdog timeout set to 5 seconds. Watchdog ping rate set to 2 seconds. Watchdog card enabled. Watchdog Ticking Away! (Where test stuck here forver silently) Updated change log at commit time: Shuah Khan Link: https://lore.kernel.org/r/20250914152840.GA3047348@bhairav-test.ee.iitb.ac.in Fixes: d89d08ffd2c5 ("selftests: watchdog: Fix ioctl SET* error paths to take oneshot exit path") Signed-off-by: Akhilesh Patil Signed-off-by: Shuah Khan Signed-off-by: Sasha Levin

selftests/watchdog-test: Fix system accidentally reset after watchdog-test

2024-12-14T18:53:08+00:00

[ Upstream commit dc1308bee1ed03b4d698d77c8bd670d399dcd04d ] When running watchdog-test with 'make run_tests', the watchdog-test will be terminated by a timeout signal(SIGTERM) due to the test timemout. And then, a system reboot would happen due to watchdog not stop. see the dmesg as below: ``` [ 1367.185172] watchdog: watchdog0: watchdog did not stop! ``` Fix it by registering more signals(including SIGTERM) in watchdog-test, where its signal handler will stop the watchdog. After that # timeout 1 ./watchdog-test Watchdog Ticking Away! . Stopping watchdog ticks... Link: https://lore.kernel.org/all/20241029031324.482800-1-lizhijian@fujitsu.com/ Signed-off-by: Li Zhijian Reviewed-by: Shuah Khan Signed-off-by: Shuah Khan Signed-off-by: Sasha Levin

.gitignore: add SPDX License Identifier

2020-03-25T10:50:48+00:00

Add SPDX License Identifier to all .gitignore files. Signed-off-by: Masahiro Yamada Signed-off-by: Greg Kroah-Hartman

selftests: watchdog: Add command line option to show watchdog_info

2019-10-02T19:44:43+00:00

With the new ioctl(WDIOC_GETSUPPORT) call in place, add a command line option to show the watchdog_info. Suggested-by: Eugeniu Rosca Signed-off-by: George G. Davis Signed-off-by: Eugeniu Rosca Signed-off-by: Shuah Khan

selftests: watchdog: Validate optional file argument

2019-10-02T19:44:04+00:00

The newly added optional file argument does not validate if the file is indeed a watchdog, e.g.: ./watchdog-test -f /dev/zero Watchdog Ticking Away! Fix it by confirming that the WDIOC_GETSUPPORT ioctl succeeds. Fixes: a4864a33f56caa ("selftests: watchdog: Add optional file argument") Reported-by: Eugeniu Rosca Signed-off-by: George G. Davis Signed-off-by: Eugeniu Rosca Signed-off-by: Shuah Khan

selftests: watchdog: cleanup whitespace in usage options

2019-09-23T14:33:16+00:00

Convert hard spaces to tabs in usage options. Suggested-by: Shuah Khan Signed-off-by: George G. Davis Signed-off-by: Shuah Khan

selftests: watchdog: Add optional file argument

2019-09-23T14:33:16+00:00

Some systems have multiple watchdog devices where the first device registered is assigned to the /dev/watchdog device file. In order to test other watchdog devices, add an optional file argument for selecting non-default watchdog devices for testing. Tested-by: Eugeniu Rosca Signed-off-by: George G. Davis Signed-off-by: Shuah Khan

selftests: watchdog: fix spelling mistake "experies" -> "expires"

2018-12-13T20:03:19+00:00

There is a spelling mistake in the --gettimeleft help text, fix it. Signed-off-by: Colin Ian King Signed-off-by: Shuah Khan

selftests: watchdog: Add gettimeleft command line arg

2018-12-12T21:01:59+00:00

Add command line argument to call and display the results of ioctl WDIOC_GETTIMELEFT. Signed-off-by: Jerry Hoemann Signed-off-by: Shuah Khan

selftests: watchdog: Fix ioctl SET* error paths to take oneshot exit path

2018-10-24T20:49:36+00:00

When ioctls for WDIOC_SETOPTIONS (WDIOS_DISABLECARD or WDIOS_ENABLECARD), WDIOC_SETTIMEOUT, and WDIOC_SETPRETIMEOUT fail, the error path continues to handler watchdog timer until user terminates it. When ioctl returns error, it might not be safe to let the watchdog tick. The error could be due an unsupported ioctl command or some other error. Fix it to handle error paths as oneshot to stop the watchdog ticks and exit right away. Signed-off-by: Shuah Khan (Samsung OSG)