dm_test_get_...sitive_delta(9)

💅 dm_test_get_elapse_time_positive_delta(9) — like, the whole scoop 🎀

okay so bestie, welcome to the Kernel API Manual 🌸 — yes, that's the manual name, and yes you're gonna read it, because this page is literally about one function and it's a whole vibe.

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✨ NAME ✨

dm_test_get_elapse_time_positive_delta — Test Get elapse time positive delta 💖

That's it. That's the function. It tests that getting the elapse time with a positive delta behaves, and honestly? slay. 🫶

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🦋 SYNOPSIS 🦋

void dm_test_get_elapse_time_positive_delta (struct kunit *test );

no cap, that's the entire signature — a void return and exactly one argument. short and iconic. periodt. 💅

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👑 ARGUMENTS 👑

• test — The KUnit test context 🌈 — this is the little test-world it lives in, the thing KUnit hands over so the test has somewhere to exist. give it a name and let it cook.

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🔥 SEE ALSO 🔥

okay so this is the part where we shout out the whole friend group, because this function does not run alone 💀

• Kernel file: ./drivers/gpu/drm/amd/display/amdgpu_dm/tests/amdgpu_dm_services_test.c 🍓 — that's where the source lives, go say hi.
• dm_test_get_elapse_time_zero_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_ctx(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, that's the entire group chat right there 🧚 and every single one of them is a (9) kernel-API page, iykyk.

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ngl bestie, this is a test page — its whole job is checking that the elapse-time math plays nice when the delta is positive. the more you know 💫

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and that's the tea 🎀 — this gem comes from ./drivers/gpu/drm/amd/display/... and it's dated October 2026 🌸, filed under dm_test_get_...sitive_delta(9) because the title got a little truncated on the way out and honestly? relatable. 💜 mwah, go write some tests ✨