alloc_test_w...ue_for_cpirq(9)
π alloc_test_w...ue_for_cpirq(9) π
okay so bestie, welcome to the Kernel API Manual β yes it's really called alloc_test_w...ue_for_cpirq(9) and yes the title got truncated mid-word, we don't talk about it π. Anyway. Sit down, hydrate, and let's gossip about this little helper function π«Ά
πΈ NAME πΈ
alloc_test_workqueue_for_cpirq β the workqueue that's all dressed up and ready for event_cpirq() β¨
π SYNOPSIS π
struct hdcp_workqueue * alloc_test_workqueue_for_cpirq (struct kunit
*test );
like, it takes a test and hands you back a struct hdcp_workqueue *. iconic signature ngl π
π¦ ARGUMENTS π¦
testβ your KUnit test context, bestie. it's the thing doing the managed allocation, so you don't have to babysit the memory yourself π
β¨ DESCRIPTION β¨
So what does it actually do? It allocates a minimal hdcp_workqueue β and the way that it's fully set up?? Obsessed π
Specifically it comes with:
- its mutex initialised
- its
cpirq_workinitialised - its three delayed works initialised
All of that because event_cpirq needs it β that's the guard(mutex) usage and the process_output usage inside event_cpirq. So like, don't skip the setup, the vibes would collapse π
fr fr: minimal workqueue, but it's got everything event_cpirq asks for. no cap.
π SEE ALSO π
π Kernel file
./drivers/gpu/drm/amd/display/amdgpu_dm/tests/amdgpu_dm_hdcp_test.c
π§ The whole friend group (aka every reference, all of them, yes all of them)
dm_test_hdcp_get_cp_disabled_returns_desired(9)dm_test_hdcp_get_cp_type0_returns_enabled(9)dm_test_hdcp_get_cp_type1_returns_enabled(9)dm_test_hdcp_get_cp_type1_rejects_type0_status(9)dm_test_hdcp_get_cp_type0_rejects_type1_status(9)dm_test_hdcp_get_adjustments_disable_authentication(9)dm_test_hdcp_get_adjustments_type0_policy(9)dm_test_hdcp_get_adjustments_type1_policy(9)dm_test_hdcp_get_adjustments_fused_io_enables_fw_check(9)alloc_test_workqueue(9)dm_test_process_output_property_validate_always_scheduled(9)dm_test_process_output_callback_needed(9)dm_test_process_output_callback_stop(9)dm_test_process_output_watchdog_needed(9)dm_test_process_output_watchdog_stop(9)dm_test_process_output_callback_and_watchdog_needed(9)dm_test_process_output_callback_stop_and_needed_requeues(9)dm_test_process_output_watchdog_stop_and_needed_requeues(9)alloc_test_workqueue_for_property_update(9)alloc_update_connector(9)dm_test_event_property_update_skips_null_connector(9)dm_test_event_property_update_skips_disconnected(9)dm_test_event_property_update_skips_null_state(9)dm_test_event_property_update_skips_null_dev(9)dm_test_event_property_update_desired_when_off(9)dm_test_event_property_update_enabled_when_encrypted(9)alloc_test_workqueue_for_callback(9)dm_test_event_callback_cancels_callback_dwork(9)dm_test_event_callback_schedules_property_validate(9)alloc_test_workqueue_for_property_validate(9)alloc_validate_connector(9)dm_test_event_property_validate_skips_null_connector(9)dm_test_event_property_validate_skips_disconnected(9)dm_test_event_property_validate_skips_null_state(9)dm_test_event_property_validate_updates_on_status_change(9)dm_test_event_property_validate_no_update_when_unchanged(9)dm_test_event_watchdog_timer_cancels_watchdog_dwork(9)dm_test_event_watchdog_timer_schedules_property_validate(9)dm_test_event_cpirq_schedules_property_validate(9)dm_test_event_cpirq_leaves_callback_and_watchdog_idle(9)dm_test_hdcp_handle_cpirq_schedules_work(9)dm_test_hdcp_handle_cpirq_selects_link_index(9)dm_test_hdcp_update_display_enable_schedules_property_validate(9)dm_test_hdcp_update_display_disable_resets_status_and_cancels_validate(9)dm_test_hdcp_create_workqueue_zero_max_links_returns_null(9)dm_test_hdcp_create_workqueue_initializes_work(9)dm_test_hdcp_create_workqueue_sets_dtm_v3_for_dcn31(9)dm_test_hdcp_create_workqueue_initializes_all_links(9)setup_destroy_sysfs(9)dm_test_hdcp_destroy_frees_and_removes_sysfs(9)dm_test_hdcp_destroy_zero_links_null_srm(9)dm_test_link_lock_locks_and_unlocks_all_links(9)dm_test_link_lock_zero_links_is_noop(9)dm_test_psp_get_srm_uninitialized_returns_null(9)dm_test_psp_set_srm_uninitialized_returns_einval(9)dm_test_psp_set_srm_initialized_stages_command(9)dm_test_srm_data_write_uninitialized_ta_keeps_srm(9)dm_test_srm_data_read_uninitialized_ta_returns_einval(9)dm_test_srm_data_read_empty_srm_returns_zero(9)alloc_test_ddc_link(9)dm_test_lp_write_i2c_builds_single_write_payload(9)dm_test_lp_read_i2c_builds_offset_then_read(9)dm_test_lp_write_dpcd_forwards_native_write(9)dm_test_lp_read_dpcd_forwards_native_read(9)dm_test_lp_write_i2c_no_connector_returns_false(9)dm_test_lp_read_dpcd_no_connector_returns_false(9)dm_test_lp_atomic_i2c_null_handle_returns_false(9)dm_test_lp_atomic_i2c_oversized_op_returns_false(9)dm_test_lp_atomic_aux_null_handle_returns_false(9)dm_test_lp_atomic_aux_oversized_op_returns_false(9)alloc_test_workqueue_locked(9)alloc_test_connector(9)dm_test_hdcp_update_display_enable_registers_connector(9)dm_test_hdcp_update_display_disable_sets_status_off(9)dm_test_hdcp_remove_display_enabled_resets_cp(9)dm_test_hdcp_remove_display_null_state_clears_connector(9)dm_test_hdcp_reset_display_clears_all_state(9)alloc_test_workqueue_for_assr(9)dm_test_enable_assr_uninitialized_dtm_returns_false(9)dm_test_enable_assr_uninitialized_dtm_ignores_link(9)dm_test_enable_assr_initialized_builds_command_and_fails(9)dm_test_update_config_null_connector_is_noop(9)dm_test_update_config_null_dc_link_is_noop(9)dm_test_update_config_dpms_off_removes_display(9)dm_test_update_config_populates_display_and_link(9)
and that's the whole page bestie, you ate that π β¨
Source vibes live over in ./drivers/gpu/drm/amd/display/... and this whole thing is stamped October 2026 β alloc_test_w...ue_for_cpirq(9), still truncated, still iconic, periodt ππ¦
π¦ where this page comes from
- nixpkgs unstable: linux-manual 7.3.1
- π girlified by deepseek-ai/DeepSeek-V4.1-Flash-1017 on : a language model's rewrite of the original, under its terms