kernel/linux.git/tools/testing/selftests/rtc/rtctest.c, branch v6.18.21

selftest: rtc: skip some tests if the alarm only supports minutes

2025-04-01T13:03:13+00:00

There are alarms which have only minute-granularity. The RTC core already has a flag to describe them. Use this flag to skip tests which require the alarm to support seconds. Signed-off-by: Wolfram Sang Link: https://lore.kernel.org/r/20250218101548.6514-1-wsa+renesas@sang-engineering.com Signed-off-by: Alexandre Belloni

selftest: rtc: Add to check rtc alarm status for alarm related test

2024-10-23T20:13:00+00:00

In alarm_wkalm_set and alarm_wkalm_set_minute test, they use different ioctl (RTC_ALM_SET/RTC_WKALM_SET) for alarm feature detection. They will skip testing if RTC_ALM_SET/RTC_WKALM_SET ioctl returns an EINVAL error code. This design may miss detecting real problems when the efi.set_wakeup_time() return errors and then RTC_ALM_SET/RTC_WKALM_SET ioctl returns an EINVAL error code with RTC_FEATURE_ALARM enabled. In order to make rtctest more explicit and robust, we propose to use RTC_PARAM_GET ioctl interface to check rtc alarm feature state before running alarm related tests. If the kernel does not support RTC_PARAM_GET ioctl interface, we will fallback to check the error number of (RTC_ALM_SET/RTC_WKALM_SET) ioctl call for alarm feature detection. Requires commit 101ca8d05913b ("rtc: efi: Enable SET/GET WAKEUP services as optional") Reviewed-by: Koba Ko Reviewed-by: Matthew R. Ochs Signed-off-by: Joseph Jang Acked-by: Alexandre Belloni Signed-off-by: Shuah Khan

selftest: rtc: Check if could access /dev/rtc0 before testing

2024-09-30T17:32:07+00:00

The rtctest requires the read permission on /dev/rtc0. The rtctest will be skipped if the /dev/rtc0 is not readable. Reviewed-by: Koba Ko Reviewed-by: Matthew R. Ochs Signed-off-by: Joseph Jang Acked-by: Alexandre Belloni Signed-off-by: Shuah Khan

selftests: harness: remove unneeded __constructor_order_last()

2024-08-06T19:40:20+00:00

__constructor_order_last() is unneeded. If __constructor_order_last() is not called on backward-order systems, __constructor_order will remain 0 instead of being set to _CONSTRUCTOR_ORDER_BACKWARD (= -1). __LIST_APPEND() will still take the 'else' branch, so there is no difference in the behavior. Signed-off-by: Masahiro Yamada Signed-off-by: Shuah Khan

selftests: rtc: skip when RTC is not present

2022-11-15T20:30:51+00:00

There is no point in failing the tests when RTC is not present. Reported-by: Linux Kernel Functional Testing Signed-off-by: Alexandre Belloni Tested-by: Daniel Diaz Signed-off-by: Shuah Khan

selftests/rtc: continuously read RTC in a loop for 30s

2022-02-26T00:00:51+00:00

Some problems with reading the RTC time may happen rarely, for example while the RTC is updating. So read the RTC many times to catch these problems. For example, a previous attempt for my commit ea6fa4961aab ("rtc: mc146818-lib: fix RTC presence check") was incorrect and would have triggered this selftest. To avoid the risk of damaging the hardware, wait 11ms before consecutive reads. In rtc_time_to_timestamp I copied values manually instead of casting - just to be on the safe side. The 11ms wait period was chosen so that it is not a divisor of 1000ms. Signed-off-by: Mateusz Jończyk Cc: Alessandro Zummo Cc: Alexandre Belloni Cc: Shuah Khan Signed-off-by: Shuah Khan

selftests: rtc: rtctest: specify timeouts

2019-05-24T19:39:58+00:00

uie_read is a commonly failing test that will block forever on buggy rtc drivers. Shorten its timeout so it fails earlier. Also increase the timeout for the two alarm test on a minute boundary. Signed-off-by: Alexandre Belloni Signed-off-by: Shuah Khan

selftests: rtc: rtctest: add alarm test on minute boundary

2019-01-15T01:49:14+00:00

Unfortunately, some RTC don't have a second resolution for alarm so also test for alarm on a minute boundary. Signed-off-by: Alexandre Belloni Signed-off-by: Shuah Khan

selftests: rtc: rtctest: fix alarm tests

2019-01-15T01:49:05+00:00

Return values for select are not checked properly and timeouts may not be detected. Signed-off-by: Alexandre Belloni Signed-off-by: Shuah Khan

selftests: rtc: rework rtctest

2018-05-30T21:21:51+00:00

Rework rtctest to use the test harness to better handle skipping tests (e.g. when alarms are not available). Also, it now handles timeout so it will not block expecting an alarm that never comes. Signed-off-by: Alexandre Belloni Signed-off-by: Shuah Khan (Samsung OSG)