amdgpu_gfx_parse_disable_cu(9)

💅 amdgpu_gfx_parse_disable_cu(9)

okay so bestie, welcome to the Kernel API Manual ✨ — this little page is all about amdgpu_gfx_parse_disable_cu, and yeah the name is a mouthful but she's literally just here to read a module parameter and stash the results. no cap. 🫶

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🌸 NAME 🌸

amdgpu_gfx_parse_disable_cu — the function whose whole personality is parsing the disable_cu module parameter 🎀

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✨ SYNOPSIS ✨

void amdgpu_gfx_parse_disable_cu (struct amdgpu_device *adev , unsigned
int *mask , unsigned int max_se , unsigned int max_sh );

that's it, that's the whole signature, and yes she returns void — no receipts, no return value, she just does the thing and dips 💅

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🦋 ARGUMENTS 🦋

• adev — your amdgpu device pointer, the main character of this whole operation 👑
• mask — the array where all the per-shader array disable masks get stored, like little lockers for each shader array 🗄️
• max_se — the number of SEs, that's your count of shader engines, don't lose it 🌈
• max_sh — the number of SHs, i.e. your shader array count, equally important, equally iconic ⭐

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💖 DESCRIPTION 💖

so here's the tea ☕ — the bitmask of CUs that should be disabled, for the shader array identified by se and sh, gets stored right here:

mask[se * max_sh + sh]

it's giving "index math, but make it fashion" ✨ that's the entire lookup formula and she's not changing it for anyone. se, sh, max_sh — all up in there, all doing their part. no notes. 🧚

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🔥 SEE ALSO 🔥

• Kernel file ./drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
• amdgpu_gfx_handle_priv_fault(9)
• amdgpu_gfx_set_run_cleaner_shader(9)
• amdgpu_gfx_get_enforce_isolation(9)
• amdgpu_gfx_set_enforce_isolation(9)
• amdgpu_gfx_kfd_sch_ctrl(9)
• amdgpu_gfx_enforce_isolation_handler(9)
• amdgpu_gfx_enforce_isolation_wait_for_kfd(9)
• amdgpu_gfx_enforce_isolation_ring_begin_use(9)
• amdgpu_gfx_enforce_isolation_ring_end_use(9)
• amdgpu_gfx_csb_preamble_start(9)
• amdgpu_gfx_csb_data_parser(9)
• amdgpu_gfx_csb_preamble_end(9)

like, that's the whole friend group right there — go say hi to all of them 🫶 literally every single one is listed, i checked 💀

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🎀 sign-off 🎀

and that's the page!! sourced straight from ./drivers/gpu/drm/amd/amdgpu, dated October 2026, and filed under amdgpu_gfx_parse_disable_cu(9) — slay, go read the other pages, ily, bye 💜🌷