vcn_v2_0_dec...g_emit_fence(9)
π vcn_v2_0_dec_ring_emit_fence(9) β the Kernel API Manual β¨
okay so bestie, welcome to the glow-up edition of the vcn_v2_0_dec_ring_emit_fence(9) man page, straight out of the Kernel API Manual π no cap, this is the whole thing, every last crumb.
πΈ NAME πΈ
vcn_v2_0_dec_ring_emit_fence β emit an fence & trap command π (yes the article is "an", we're keeping it, it's iconic, don't @ me)
β¨ SYNOPSIS β¨
void vcn_v2_0_dec_ring_emit_fence (struct amdgpu_ring *ring , u64 addr ,
u64 seq , unsigned flags );
that's it. that's the whole vibe. four args, no return, void, she simply does not give anything back π
π«Ά ARGUMENTS π«Ά
ringβ anamdgpu_ringpointer, like the actual ring we're talking to π―addrβ the address. justβ¦ the address. that's the whole description, queen is mysterious π¦seqβ the sequence number π’flagsβ the fence related flags, i.e. the flags that are, you know, fence-related π©
π DESCRIPTION π
Write a fence and a trap command to the ring. fr fr that's it. that's the entire job. lowkey iconic how simple it is β¨
π§ SEE ALSO π§
okay this is the friend group, everybody say hi π
- the Kernel file
./drivers/gpu/drm/amd/amdgpu/vcn_v2_0.cπ vcn_v2_0_early_init(9)vcn_v2_0_sw_init(9)vcn_v2_0_sw_fini(9)vcn_v2_0_hw_init(9)vcn_v2_0_hw_fini(9)vcn_v2_0_suspend(9)vcn_v2_0_resume(9)vcn_v2_0_mc_resume(9)vcn_v2_0_disable_clock_gating(9)vcn_v2_0_enable_clock_gating(9)vcn_v2_0_dec_ring_get_rptr(9)vcn_v2_0_dec_ring_get_wptr(9)vcn_v2_0_dec_ring_set_wptr(9)vcn_v2_0_dec_ring_insert_start(9)vcn_v2_0_dec_ring_insert_end(9)vcn_v2_0_dec_ring_insert_nop(9)vcn_v2_0_dec_ring_emit_ib(9)vcn_v2_0_enc_ring_get_rptr(9)vcn_v2_0_enc_ring_emit_fence(9)vcn_v2_0_enc_ring_emit_ib(9)
like, the whole dec squad and the enc squad showed up?? the crossover event nobody expected π«Άβ¨
and that's the page!! π this little cutie lives in ./drivers/gpu/drm/amd/amdgpu and the version stamp says October 2026 β mwah, signing off, go read the source bestie, ily ππΈπ¦
π¦ where this page comes from
- nixpkgs unstable: linux-manual 7.3.1
- π girlified by deepseek-ai/DeepSeek-V4.1-Flash-1017 on : a language model's rewrite of the original, under its terms