kselftests: timers: set-timer-lat: Add one-shot timer test cases
These testcases are motivated by a recent alarmtimer regression, which caused one-shot CLOCK_{BOOTTIME,REALTIME}_ALARM timers to become periodic timers. The new testcases are very similar to the existing testcases for repeating timers. But rather than waiting for 5 alarms, they wait for 5 seconds and verify that the alarm fired exactly once. Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@kernel.org> Cc: Miroslav Lichvar <mlichvar@redhat.com> Cc: Richard Cochran <richardcochran@gmail.com> Cc: Prarit Bhargava <prarit@redhat.com> Cc: Stephen Boyd <stephen.boyd@linaro.org> Cc: Shuah Khan <shuah@kernel.org> Cc: linux-kselftest@vger.kernel.org Signed-off-by: Greg Hackmann <ghackmann@google.com> Signed-off-by: John Stultz <john.stultz@linaro.org>
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