dm_test_ism_...d_transition(9)

💅 dm_test_ism_...d_transition — Kernel API Manual

okay so bestie, welcome to the manual page for dm_test_ism_...d_transition(9), which lives in the Kernel API Manual universe and is literally all about one very specific little KUnit test. pull up a chair 🎀

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✨ NAME ✨

dm_test_ism_trigger_event_invalid_transition — the test that checks an invalid event leaves state unchanged. that's it, that's the whole vibe. no cap, the state does not move 💀

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🦋 SYNOPSIS 🦋

void dm_test_ism_trigger_event_invalid_transition (struct kunit *test );

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🌸 ARGUMENTS 🌸

• test — the KUnit test context. that's the whole argument list, she's low maintenance 👑

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🌈 SEE ALSO 🌈

first up, the kernel file this whole thing calls home:

• Kernel file — ./drivers/gpu/drm/amd/display/amdgpu_dm/tests/amdgpu_dm_ism_test.c 📁

and now the whole friend group, aka the sibling tests — go say hi:

• dm_test_ism_idle_delay_entry_count_exceeds_history_size(9)
• dm_test_ism_init_sets_initial_state(9)
• dm_test_ism_fini_after_init(9)
• dm_test_ism_set_last_idle_ts_updates_timestamp(9)
• dm_test_ism_insert_record_basic(9)
• dm_test_ism_insert_record_wraps_around(9)
• dm_test_ism_trigger_event_valid_transition(9)
• dm_test_dispatch_next_event_hyst_wait_no_delay(9)
• dm_test_dispatch_next_event_hyst_wait_with_delay(9)
• dm_test_dispatch_next_event_opt_idle_no_sso_delay(9)
• dm_test_dispatch_next_event_opt_idle_with_sso_delay(9)
• dm_test_dispatch_next_event_timer_aborted(9)
• dm_test_dispatch_next_event_no_action_state(9)
• dm_test_ism_commit_event_no_state(9)
• dm_test_ism_commit_event_cursor_transition(9)
• dm_test_ism_commit_event_invalid_event(9)
• dm_test_ism_force_full_power(9)
• dm_test_ism_disable_enable_cycle(9)
• dm_test_ism_dispatch_hysteresis_schedule_and_cancel(9)
• dm_test_ism_dispatch_optimized_idle_defers_sso(9)

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fr fr the entire point of this one is: invalid event goes in, state comes out the exact same. nothing changes. the state is unbothered. main character energy, honestly 🫶

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and that's the page!! source/version is ./drivers/gpu/drm/amd/display/... and the date on this baddie is October 2026, so jot that down in your notes app bestie 🗓️💖 slay, bye! 🧚✨