xe_lrc_ring_is_idle(9)

✨ xe_lrc_ring_is_idle ✨

okay bestie, so this is a page from the Kernel API Manual — it's xe_lrc_ring_is_idle(9) and it's literally the vibe check for your LRC 💅

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🌸 NAME 🌸

xe_lrc_ring_is_idle — LRC is idle (yes that's the whole name, iconic, we love a short king 👑

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🎀 SYNOPSIS 🎀

bool xe_lrc_ring_is_idle (struct xe_lrc *lrc );

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🦋 ARGUMENTS 🦋

• lrc — Pointer to the lrc. that's it. that's the whole argument. she takes one (1) pointer and she's done 🫶

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💖 DESCRIPTION 💖

So what she does is: she compares the LRC ring head and tail to determine if idle. Head vs tail, one little comparison, and boom — you know if the ring is sitting there chilling or actually doing stuff. no cap, that's the whole algorithm 🧚

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⭐ RETURN ⭐

• True if ring is idle
• False otherwise

(yeah it says "True is ring is idle" in the original, we're not fixing that typo, we're just honouring it 😭)

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🔥 SEE ALSO 🔥

Kernel file ./drivers/gpu/drm/xe/xe_lrc.c, plus the whole friend group:

• xe_gt_lrc_hang_replay_size(9)
• xe_lrc_reg_size(9)
• xe_lrc_engine_state_size(9)
• xe_lrc_ctx_timestamp_ggtt_addr(9)
• xe_lrc_ctx_timestamp_udw_ggtt_addr(9)
• xe_lrc_ctx_timestamp(9)
• xe_lrc_queue_timestamp(9)
• xe_lrc_ctx_job_timestamp_ggtt_addr(9)
• xe_lrc_ctx_job_timestamp(9)
• xe_default_lrc_update_memirq_regs_with_address(9)
• xe_lrc_update_memirq_regs_with_address(9)
• xe_lrc_setup_wa_bb_with_scratch(9)
• xe_lrc_set_multi_queue_priority(9)
• xe_lrc_create(9)
• xe_lrc_destroy(9)
• xe_lrc_update_hwctx_regs_with_address(9)
• xe_lrc_alloc_seqno_fence(9)
• xe_lrc_free_seqno_fence(9)
• xe_lrc_init_seqno_fence(9)
• xe_lrc_engine_id(9)
• xe_lrc_timestamp(9)
• xe_lrc_update_timestamp(9)

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🫶 quick reminder: she only tells you whether the ring is idle — she does not tell you why, or what to do about it. don't ask her for more, she's booked and busy.

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alright that's the page!! this one lives in ./drivers/gpu/drm/xe, dated October 2026, and it's filed under xe_lrc_ring_is_idle(9) — catch u later bestie, mwah 💜✨