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authorIvan Orlov <ivan.orlov0322@gmail.com>2024-08-13 13:07:01 +0100
committerTakashi Iwai <tiwai@suse.de>2024-08-18 09:55:55 +0200
commit1026392d10af7b35361c7ec4e14569d88c0c33e4 (patch)
tree7319695e216fc0109bd704b75752120237ade2f1 /arch/riscv/kernel/patch.c
parent37745918e0e7575bc40f38da93a99b9fa6406224 (diff)
selftests: ALSA: Cover userspace-driven timers with test
Add a test for the new functionality of userspace-driven timers and the tool which allows us to count timer ticks in a certain time period. The test: 1. Creates a userspace-driven timer with ioctl to /dev/snd/timer 2. Starts the `global-timer` application to count the ticks of the timer from step 1. 3. Asynchronously triggers the timer multiple times with some interval 4. Compares the amount of caught ticks with the amount of trigger calls. Since we can't include <alsa/asoundlib.h> and <sound/asound.h> in one file due to overlapping declarations, I have to split the test into two applications: one of them counts the amount of timer ticks in the defined time period, and another one is the actual test which creates the timer, triggers it periodically and starts the first app to count the amount of ticks in a separate thread. Besides from testing the functionality itself, the test represents a sample application showing userspace-driven ALSA timers API. Also, the timer test includes a test case which tries to create a timer with invalid resolution (=0), and NULL as a timer info structure. Signed-off-by: Ivan Orlov <ivan.orlov0322@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Link: https://patch.msgid.link/20240813120701.171743-5-ivan.orlov0322@gmail.com
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