hfi1_schedule_send_yield(9)

💅 hfi1_schedule_send_yield(9) 💅

okay so bestie, this one is straight from the Kernel API Manual, and it’s here to explain a tiny but iconic little helper ✨

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🎀 NAME 🎀

testing whether a yield is required for the QP send engine 💖

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✨ SYNOPSIS ✨

bool hfi1_schedule_send_yield (struct rvt_qp *qp , struct hfi1_pkt_state *ps , bool tid );

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🌸 ARGUMENTS 🌸

• qp — a pointer to QP. literally just a pointer to the QP, bestie 🫶
• ps — a pointer to a structure with commonly lookup values for the send engine progress. yes, that’s the whole vibe 💅
• tid — true if it is the tid leg 👑

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🦋 DESCRIPTION 🦋

This routine checks if the time slice for the QP has expired for RC QPs. if it has, an additional work entry is queued 🔥 at this point, other QPs have an opportunity to be scheduled. so it’s giving “let someone else have the aux” energy, no cap.

It returns true if a yield is required; otherwise, false is returned. periodt 💖

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💜 SEE ALSO 💜

• Kernel file ./drivers/infiniband/hw/hfi1/ruc.c
• hfi1_make_grh(9)
• build_ahg(9)
• hfi1_make_ruc_header_16B(9)
• hfi1_make_ruc_header_9B(9)
• hfi1_do_send(9)

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mwah 💋 source/version check: ./drivers/infiniband/hw/hfi1; date: October 2026. slay ✨