dm_test_quer...aps_null_ctx(9)

💅 dm_test_query_brightness_caps_null_ctx(9) 💅

okay so bestie, welcome to the kernel API manual — this one lives in section 9 of the manual and it's a whole little KUnit test. pull up a chair 🎀

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🌸 NAME 🌸

dm_test_query_brightness_caps_null_ctx — literally just here to Test Query brightness caps null ctx. that's the vibe. that's the whole assignment. ✨

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🦋 SYNOPSIS 🦋

void dm_test_query_brightness_caps_null_ctx (struct kunit *test );

yes she returns void, yes she takes exactly one thing, no she is not going to elaborate 💅

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🔥 ARGUMENTS 🔥

• test — The KUnit test context. that's it, that's the whole parameter list, and honestly? iconic. one (1) argument. main character energy fr fr 👑

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👑 SEE ALSO 👑

okay this is the part where the manpage just starts name-dropping the entire friend group, and we love that for her 🫶

Kernel file — go look at the actual source, it's right here:

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

and now the rest of the crew, in the exact order they showed up to the party 🎉:

• dm_test_get_elapse_time_zero_delta(9)
• dm_test_get_elapse_time_positive_delta(9)
• dm_test_get_elapse_time_large_delta(9)
• dm_test_get_elapse_time_wraparound(9)
• dm_test_perf_trace_timestamp_basic(9)
• dm_test_trace_smu_enter_null_ctx(9)
• dm_test_trace_smu_enter_with_params(9)
• dm_test_trace_smu_exit_success_null_ctx(9)
• dm_test_trace_smu_exit_failure_null_ctx(9)
• dm_test_trace_smu_exit_with_response(9)
• dm_test_query_brightness_caps_null_caps(9)
• dm_test_query_brightness_caps_null_driver_ctx(9)
• dm_test_query_brightness_caps_lcd2_null_ctx(9)
• dm_test_query_brightness_caps_lcd1_success(9)
• dm_test_query_brightness_caps_non_lcd1_uses_second_slot(9)

like, fifteen whole siblings. a whole family reunion in the SEE ALSO section. obsessed. 🌈

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ngl there aren't any OPTIONS or exit statuses or env vars on this one — it's a kernel test function, not a command, so there's nothing to --flag about. the more you know ✨

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and that's the whole page bestie, no cap 💖 this little test comes to you from ./drivers/gpu/drm/amd/display/... and is dated October 2026 — so yeah, she's from the future, slay ⭐ stay hydrated, run your tests, and remember: null ctx means null ctx 🙈 🍓