amdgpu_amdkf...sigbus_delay(9)

💅 amdgpu_amdkf...sigbus_delay(9) 💅

okay so bestie, welcome to the Kernel API Manual — this one's a tiny little function with big main character energy, and yes the name is a whole mouthful, we don't make the rules 🎀

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✨ NAME ✨

amdgpu_amdkfd_set_sigbus_delay — literally just sets the per-process KFD SIGBUS delay, that's the whole vibe 🦋

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✨ SYNOPSIS ✨

int amdgpu_amdkfd_set_sigbus_delay (struct task_struct *task , u32 ms );

like, it takes a task and a u32 and hands you back an int, periodt 💅

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✨ ARGUMENTS ✨

• task — the task in the target process 👑 this is the one whose vibe we're checking, iykyk
• ms — the encoded delay value, and bestie there are three whole moods here 🌈:
  • 0 = immediate, no waiting, go go go 🔥
  • 0xFFFFFFFF = suppress, aka we're not doing this at all 🙈
  • anything else = delay in milliseconds, like an actual real number of ms ⭐

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✨ DESCRIPTION ✨

so what it actually does: it stores the SIGBUS delivery option on the kfd_process associated with task. that's it. that's the whole job 💖

but here's the tea 🍓 — if the calling process has not opened /dev/kfd yet, meaning there's no kfd_process to speak of, this is a no-op. nothing happens. zero. nada. the option only applies to processes that actually use KFD, so don't come for this function if you never opened the device, fr fr 😭

not me writing to a process that doesn't exist 💀 — genuinely though, no error, no drama, it just quietly does nothing.

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✨ SEE ALSO ✨

• Kernel file ./drivers/gpu/drm/amd/amdkfd/kfd_process.c — go read the source, it's giving lore 📖
• kfd_get_cu_occupancy(9) 🧚
• kfd_process_device_init_vm(9) 🌸

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and that's the page!! 🫶 brought to you by the source tree over at ./drivers/gpu/drm/amd/amdkfd, dated October 2026, and titled amdgpu_amdkf...sigbus_delay(9) because apparently we ran out of room for the full name in the header 💀 slay, go set some sigbus delays bestie 💜✨