amdgpu_fence_fallback(9)

💅 amdgpu_fence_fallback(9) — a whole vibe

okay so bestie, welcome to the Kernel API Manual, section 9 🎀 this little cutie lives in the kernel API docs and honestly it's short but it delivers. Grab your matcha, we're learning about a fallback, and yes it's exactly as iconic as it sounds ✨

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🌸 NAME 🌸

amdgpu_fence_fallback — the fallback for hardware interrupts 🫶 like, when the hardware interrupt path needs a backup dancer, this is her. no cap.

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✨ SYNOPSIS ✨

void amdgpu_fence_fallback (struct timer_list *t );

that's it. that's the whole signature. returns nothing, takes one timer pointer, gives main character energy 👑

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🦋 ARGUMENTS 🦋

• t — the timer context, and the way she uses it is so clever: it's how you get your hands on the pointer to the ring structure 💫 iykyk.

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💖 DESCRIPTION 💖

Checks for fence activity. periodt. 🔥

like, that's genuinely the whole description — she's a fallback, she checks for fence activity, she does not overexplain herself. minimal, mysterious, lowkey obsessed with her 💅

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🌈 SEE ALSO 🌈

the friend group!! the whole squad!! literally everyone shows up for this one 🧚💜

• Kernel file ./drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c 📁 (yes the source is right there, go look)
• amdgpu_fence_write(9)
• amdgpu_fence_read(9)
• amdgpu_fence_emit(9)
• amdgpu_fence_emit_polling(9)
• amdgpu_fence_schedule_fallback(9)
• amdgpu_fence_process(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)

all 23 of them, accounted for, nobody left on read 🙈✨

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ngl bestie, the description is short — but that's the point. she shows up, she checks for fence activity, she leaves. queen behavior 👑

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okay that's the page!! source and date drop for the girlies: this one comes from ./drivers/gpu/drm/amd/amdgpu and it's dated October 2026 🗓️💫 thanks for reading, mwah, bye bestie 🫶🎀