lpfc_debugf...ing_trc_open(9)

📦 version 7.3.1, in nixpkgs unstable

💅 lpfc_debugfs_slow_ring_trc_open

okay so bestie, welcome to the Kernel API Manual — section 9, the kernel-api girlies — and this page is filed under lpfc_debugf...ing_trc_open(9) ✨ (yes the name is lowkey truncated in the header, she's just like that, we don't question it 💅).

Today's main character: lpfc_debugfs_slow_ring_trc_open, aka the opener of the Slow Ring trace log 🎀. She's a C function, she's an entry point, she's giving debugfs gatekeeper energy 👑.

✨ NAME ✨

lpfc_debugfs_slow_ring_trc_open — Open the Slow Ring trace log 🦋

🌸 SYNOPSIS 🌸

int lpfc_debugfs_slow_ring_trc_open (struct inode *inode , struct file
*file );

its giving two args, one int return, no drama 😌

🎀 ARGUMENTS 🎀

  • inode — the inode pointer that contains a vport pointer. she's the carrier bag, the vport is inside her 👜✨
  • file — the file pointer to attach the log output to. this is where the tea gets served 🍓

🦋 DESCRIPTION 🦋

So. This routine is literally the entry point for the debugfs open file operation 🔥. Here's the whole vibe, step by step, no skips:

  1. it gets the vport from the i_private field in inode — that's where she's hiding 🙈
  2. it allocates the necessary buffer for the log — bestie needs somewhere to put the info 💖
  3. it fills that buffer from the in-memory log for this vport — pouring the tea, carefully, from memory into the buffer 🫖
  4. and then it returns a pointer to that log in the private_data field in file — handing it over, done, iconic 👑

no cap, that's the entire lifecycle of this function. she opens, she allocates, she fills, she points. periodt 💅

heads up 🚨 — the buffer gets allocated and the log gets copied into it here, in the open path. that's just what the page says, so that's what we're saying 🌈

💀 RETURN 💀

This function returns zero if successful 😌✨. On error it will return a negative error value — so like, if you see a negative number, that's the error arc, not a plot twist 😭.

💜 SEE ALSO 💜

okay the squad is large, she has connections, she knows everyone, iykyk 🧚:

like i said. connections 💅🔗

and that's the page, bestie!! 🫶 she lives down at ./drivers/scsi/lpfc 🌈, she's dated October 2026 🗓️, she's from the Kernel API Manual 👑, and she answers to lpfc_debugf...ing_trc_open(9) 💖 — go forth, open that trace log, slay ✨🎀

📦 where this page comes from