io_delay_show(9)

📦 version 7.3.1, in nixpkgs unstable

🌸 io_delay_show — the Kernel API Manual moment 💅

okay so bestie, we're deep in the kernel API manual (9) section today, and the star of the show is io_delay_show. yes, it's giving "why is this a whole manpage" energy, but we're gonna read it together bestie, hand in hand 🫶

✨ NAME ✨

io_delay_show — the io missing delay situation 💀 (that's literally what it says, no cap)

🦋 SYNOPSIS 🦋

ssize_t io_delay_show (struct device *cdev , struct device_attribute *attr , char *buf );

look at her, she's gorgeous, she returns ssize_t and takes three whole arguments, main character energy fr fr 👑

🎀 ARGUMENTS 🎀

  • cdev — pointer to the embedded class device 💖 literally just a pointer to the embedded class device, that's it, that's the vibe
  • attr — ? 🙈 okay so the manpage itself is just sitting there going "?" and honestly? same bestie. we don't know. the docs don't know. nobody knows. it's a mystery and we're at peace with it ✨
  • buf — the buffer returned 🌸 the buffer that gets returned, iconic, no notes

💜 DESCRIPTION 💜

so what does she do? this whole thing exists for firmware implementation for debouncing device removal events 🔥 that's the whole assignment. firmware. device removal events. debouncing them. slay.

and also — it's a sysfs 'read-only' shost attribute. read-only!! periodt. don't come for her trying to write, she's not that kind of girl 💅

bestie note: that "?" in the ARGUMENTS section is not me being lazy, it is verbatim what the page says. we respect the mystery 🧚

🌈 SEE ALSO 🌈

okay this is the part where the page goes absolutely feral and lists what feels like every single sibling in the ./drivers/scsi/mpt3sas/mpt3sas_ctl.c family reunion 😭 grab a snack, we're going through the whole group chat:

like… 80+ entries. she said "you WILL know my whole family" and honestly? we stan a thorough queen 👑✨

that's the whole page bestie, we ate and left no crumbs 🍓💅 mwah 💋

sign-off time 🎀 this little love letter lives in ./drivers/scsi/mpt3sas, dated October 2026 — go give the source tree a kiss for me, ily, bye 🦋💜

📦 where this page comes from