dm_test_appl...nonzero_wait(9)

💅 dm_test_appl...nonzero_wait(9) — the Kernel API Manual glow-up

okay bestie, so we're looking at dm_test_appl...nonzero_wait(9) from the Kernel API Manual — yes that's the section-9 manual, and yes she's a kernel test girlie. come on in, this one's short but she's important 🎀

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✨ NAME ✨

dm_test_apply_delay_nonzero_wait — literally a test that checks a non-zero wait interval actually executes the delay path. no cap, that's the whole personality 💅

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🌸 SYNOPSIS 🌸

void dm_test_apply_delay_nonzero_wait (struct kunit *test );

that's it. one function, no return value, she just goes in and vibes 🦋

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🫶 ARGUMENTS 🫶

• test — the KUnit test context. yeah, that's your main character right there, it's the KUnit testing framework's context struct and it's the only thing she asks of you 👑

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🔥 SEE ALSO 🔥

okay so the kernel file lives right here, go look at the source, it's giving transparency and I respect it:

./drivers/gpu/drm/amd/display/amdgpu_dm/tests/amdgpu_dm_test.c

and now the friend group 💖 — the whole squad of sibling tests:

• dm_test_is_idle(9), dm_test_wait_for_idle(9), dm_test_soft_reset(9)
• dm_test_set_clockgating_state(9), dm_test_set_powergating_state(9), dm_test_bandwidth_update(9)
• dm_test_crtc_complete_writeback_no_connector(9), dm_test_crtc_complete_writeback_not_pending(9)
• dm_test_vblank_get_counter_out_of_range(9), dm_test_vblank_get_counter_no_stream(9)
• dm_test_crtc_get_scanoutpos_invalid_crtc(9), dm_test_crtc_get_scanoutpos_no_stream(9)
• dm_test_atomic_get_new_state_empty(9), dm_test_atomic_get_new_state_match(9), dm_test_atomic_destroy_state_no_context(9)
• dm_test_plane_layer_index_cmp_equal(9), dm_test_plane_layer_index_cmp_descending(9), dm_test_plane_layer_index_cmp_ascending(9)
• dm_test_fill_color_attr_rgb_format(9)
• dm_test_fill_color_attr_bt601_full(9), dm_test_fill_color_attr_bt601_limited(9)
• dm_test_fill_color_attr_bt709_full(9), dm_test_fill_color_attr_bt709_limited(9)
• dm_test_fill_color_attr_bt2020_full(9), dm_test_fill_color_attr_bt2020_limited(9)
• dm_test_fill_color_attr_invalid_encoding(9)
• dm_test_modereset_required_when_inactive_and_modeset(9), dm_test_modereset_not_required_when_active_and_modeset(9), dm_test_modereset_not_required_when_inactive_without_modeset(9)
• dm_test_scaling_state_same(9), dm_test_scaling_state_scaling_changed(9)
• dm_test_scaling_state_underscan_enabled(9), dm_test_scaling_state_underscan_disabled(9), dm_test_scaling_state_underscan_border_changed(9)
• dm_test_multisync_trigger_disabled(9), dm_test_multisync_trigger_rising(9), dm_test_multisync_trigger_falling(9)
• dm_test_master_stream_highest_refresh(9), dm_test_master_stream_defaults_to_first(9)
• dm_test_cp_diff_hdcp_type_change(9), dm_test_cp_diff_reenable_mode_changed(9), dm_test_cp_diff_reenable_no_change(9)
• dm_test_cp_diff_undesired(9), dm_test_cp_diff_desired_mode_changed(9), dm_test_cp_diff_desired_no_change(9)
• dm_test_cp_diff_update_hdcp_hotplug(9), dm_test_cp_diff_stream_reenabled(9)
• dm_test_cp_diff_s3_undesired_to_enabled(9), dm_test_cp_diff_desired_to_enabled(9), dm_test_cp_diff_desired_to_undesired(9)
• dm_test_per_frame_master_sync_single_stream(9), dm_test_per_frame_master_sync_two_streams(9), dm_test_per_frame_master_sync_skips_null_stream(9)
• dm_test_apply_delay_null_sink(9), dm_test_apply_delay_zero_wait(9)

like, that's the whole ah hoc test family and they're all lowkey iconic 🌈

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ok that's the whole page bestie — no options, no exit statuses, no environment variables, no warnings hiding in here. she's a one-function wonder and she ate ✨

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and for the cute sign-off: this little beauty comes from the source ./drivers/gpu/drm/amd/display/... and she's dated October 2026 💜 so go forth, run your KUnit tests, and remember — non-zero wait intervals deserve to have their delay path executed too. periodt. 🎀🦋👑