dm_test_crtc...cted_display(9)

💅 dm_test_crtc_is_headless_connected_display — Kernel API Manual, section 9 🎀

okay bestie, welcome to the dm_test_crtc...cted_display(9) page ✨ — yes, that name is doing the absolute most, it's from the Kernel API Manual and it's giving "abbreviated for your convenience" energy. Let's get into it 🫶

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✨ NAME ✨

dm_test_crtc_is_headless_connected_display — the little test that checks whether a Crtc counts as a headless connected display. no cap, that's literally the whole vibe check 💅

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🌸 SYNOPSIS 🌸

void dm_test_crtc_is_headless_connected_display (struct kunit *test );

one function, one argument, zero drama. icon behavior 🔥

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🦋 ARGUMENTS 🦋

• test — the KUnit test context 💖 this is your backstage pass, the thing the test framework hands you so the test can do its thing. that's it, that's the argument, she's lowkey the main character 🌟

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🎀 SEE ALSO 🎀

okay so this section is long, and honestly? she ate. this is the full squad, all the dm_test_* siblings, all in the same kernel file:

• Kernel file — ./drivers/gpu/drm/amd/display/amdgpu_dm/tests/amdgpu_dm_crtc_test.c 📁 that's where all of these live, go say hi to them

then, in the order the page lists them, no reordering, no skipping, periodt:

dm_test_crtc_modeset_required_active_mode_changed(9), dm_test_crtc_modeset_required_active_active_changed(9), dm_test_crtc_modeset_required_active_connectors_changed(9), dm_test_crtc_modeset_required_inactive(9), dm_test_crtc_modeset_required_no_changes(9), dm_test_crtc_vrr_active_irq_variable(9), dm_test_crtc_vrr_active_irq_fixed(9), dm_test_crtc_vrr_active_irq_inactive(9), dm_test_crtc_vrr_active_irq_disabled(9), dm_test_crtc_vrr_active_irq_unsupported(9), dm_test_crtc_vrr_active_variable(9), dm_test_crtc_vrr_active_fixed(9), dm_test_crtc_vrr_active_inactive(9), dm_test_crtc_vrr_active_disabled(9), dm_test_crtc_vrr_active_unsupported(9), dm_test_crtc_is_headless_null_adev(9), dm_test_crtc_is_headless_no_connectors(9), dm_test_crtc_is_headless_writeback_only(9), dm_test_crtc_is_headless_disconnected_display(9), dm_test_crtc_is_headless_mixed_connectors(9), dm_test_crtc_helper_mode_fixup_returns_true(9), dm_test_crtc_set_vupdate_irq_no_otg(9), dm_test_crtc_set_vupdate_irq_dc_busy(9), dm_test_crtc_set_vupdate_irq_enable(9), dm_test_idle_create_workqueue(9), dm_test_idle_worker_disabled_clears_running(9), dm_test_idle_worker_enabled_breaks_when_idle_disallowed(9), dm_test_idle_worker_enabled_breaks_when_not_headless(9), dm_test_idle_worker_enabled_runs_body(9), dm_test_crtc_set_static_screen_optimze_no_sr_entry(9), dm_test_crtc_set_static_screen_optimze_sr_entry_psr(9), dm_test_crtc_set_static_screen_optimze_psr_su_skips(9), dm_test_crtc_enable_vblank_rejects_unconfigured(9), dm_test_crtc_enable_vblank_full_path(9), dm_test_crtc_enable_vblank_vupdate_busy(9), dm_test_crtc_enable_vblank_crtc_irq_error(9), dm_test_crtc_enable_vblank_in_reset(9), dm_test_crtc_enable_vblank_queues_work(9), dm_test_crtc_enable_vblank_ips_restore(9), dm_test_crtc_enable_vblank_ips_restore_replay(9), dm_test_crtc_update_active_planes_no_stream(9), dm_test_count_crtc_active_planes_none(9), dm_test_count_crtc_active_planes_mixed(9), dm_test_crtc_duplicate_state_copies_fields(9), dm_test_crtc_reset_state_allocates_state(9), dm_test_crtc_destroy_state_no_stream(9), dm_test_crtc_destroy_state_releases_stream(9), dm_test_crtc_handle_vblank_no_event(9), dm_test_crtc_handle_vblank_skips_when_flip_submitted(9), dm_test_crtc_handle_vblank_completes_cursor_only(9), dm_test_vblank_control_worker_setup(9), dm_test_vblank_control_worker_enable_increments(9), dm_test_vblank_control_worker_disable_decrements(9), dm_test_vblank_control_worker_disable_clamps_zero(9), dm_test_crtc_disable_vblank_no_irq_installed(9), dm_test_crtc_disable_vblank_vrr(9), dm_test_crtc_disable_vblank_queues_work(9)

ngl those set_static_screen_optimze ones are spelled exactly like that in the source — "optimze" with no i — and we are not fixing it, we are respecting her choices 💀✨

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and that's the whole page, bestie, you're officially caught up 🧚💜

this little number came from the source ./drivers/gpu/drm/amd/display/... and is dated October 2026, filed under dm_test_crtc...cted_display(9) — mwah, stan, no notes 👑💖