amdgpu_fence_read(9)

💅 amdgpu_fence_read — aka the Kernel API Manual glow-up

okay bestie, welcome to amdgpu_fence_read(9) ✨ this is the Kernel API Manual entry for it and honestly? it's a little one but it eats. short, sweet, does exactly one thing. periodt.

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🌸 NAME 🌸

amdgpu_fence_read — read a fence value 🎀 literally that's the whole assignment.

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✨ SYNOPSIS ✨

u32 amdgpu_fence_read (struct amdgpu_ring *ring );

that's it. that's the whole vibe. one ring in, one u32 out 💖

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🫶 ARGUMENTS 🫶

• ring — the ring the fence is associated with 👑 like, the ring this fence is emotionally attached to. it's giving "which ring owns this fence" energy, no cap.

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💅 DESCRIPTION 💅

so what does it do?? it reads a fence value from memory — and the manpage is very clear: this is on all asics 💀 no exceptions, no special cases, everybody gets the read.

and then it returns the value of the fence read from memory. that's the whole story. read the fence, hand you back the value. iconic behavior, honestly. lowkey the most reliable friend in the driver 🌈

ngl this is the "just go look at the number" function. no drama, no callbacks, just vibes and a memory read 🔥

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🦋 SEE ALSO 🦋

oh you want the whole friend group?? say less 💜

• Kernel file ./drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c — the mothership, the main character, the source of truth 🧚
• amdgpu_fence_write(9)
• amdgpu_fence_emit(9)
• amdgpu_fence_emit_polling(9)
• amdgpu_fence_schedule_fallback(9)
• amdgpu_fence_process(9)
• amdgpu_fence_fallback(9)
• amdgpu_fence_wait_empty(9)
• amdgpu_fence_wait_polling(9)
• amdgpu_fence_count_emitted(9)
• amdgpu_fence_last_unsignaled_time_us(9)
• amdgpu_fence_update_start_timestamp(9)
• amdgpu_fence_driver_start_ring(9)
• amdgpu_fence_driver_init_ring(9)
• amdgpu_fence_driver_sw_init(9)
• amdgpu_fence_need_ring_interrupt_restore(9)
• amdgpu_fence_driver_hw_fini(9)
• amdgpu_fence_driver_hw_init(9)
• amdgpu_fence_driver_set_error(9)
• amdgpu_fence_driver_force_completion(9)
• amdgpu_ring_set_fence_errors_and_reemit(9)
• amdgpu_fence_enable_signaling(9)
• amdgpu_fence_free(9)
• amdgpu_fence_release(9)

like, the whole clique fr fr 😭 go read them, they're all slay in their own way.

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🎀 okay that's the page!! this little cutie lives at ./drivers/gpu/drm/amd/amdgpu, dated October 2026 — so you know exactly where to find it and when it showed up 💫 mwah, go read a fence value, bestie 💅