subvp_valida...hedulability(9)

💅 subvp_validate_static_schedulability — Kernel API Manual, bestie edition ✨

okay so real talk, this page lives in the Kernel API Manual, and the function is literally called subvp_validate_static_schedulability. long name, i know. it ate though. 🎀

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✨ NAME ✨

subvp_validate_static_schedulability — checks which SubVP case got calculated, and handles the static analysis based on whichever case it is. no cap. 🦋

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🌸 SYNOPSIS 🌸

bool subvp_validate_static_schedulability (struct dc *dc , struct dc_state *context , int vlevel );

like. it returns a bool. that's the whole vibe. 💜

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🫶 ARGUMENTS 🫶

• dc — the current dc state. the now. the present. main character energy.
• context — the new dc state. the glow-up waiting to happen.
• vlevel — the voltage level, calculated by DML. not us. DML did that. 🔥

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👑 DESCRIPTION 👑

three cases, periodt:

1. SubVP + SubVP
2. SubVP + VBLANK (DRR checked internally — don't worry about it, it's handled)
3. SubVP + VACTIVE (currently unsupported 😭)

heads up bestie: case 3 is currently unsupported. just so we're clear. 💀

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⭐ RETURN ⭐

returns True if it's statically schedulable, False otherwise. that's it, that's the sentence. slay. ✨

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🌈 SEE ALSO 🌈

kernel file: ./drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c

and like, the whole friend group:

• dcn32_helper_populate_phantom_dlg_params(9)
• dcn32_set_phantom_stream_timing(9)
• dcn32_get_num_free_pipes(9)
• dcn32_assign_subvp_pipe(9)
• dcn32_enough_pipes_for_subvp(9)
• subvp_subvp_schedulable(9)
• subvp_drr_schedulable(9)
• subvp_vblank_schedulable(9)
• subvp_subvp_admissable(9)
• dcn32_allow_subvp_high_refresh_rate(9)
• dcn32_determine_max_vratio_prefetch(9)
• dcn32_assign_fpo_vactive_candidate(9)
• dcn32_find_vactive_pipe(9)

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okay that's the whole page, ily, go read your pipes 💖

sign-off: this one's from ./drivers/gpu/drm/amd/display/..., dated October 2026, and it answers to subvp_valida...hedulability(9) if you ever need to find it again 🎀🦋💅