qla4xxx_do_dpc(9)

📦 version 7.3.1, in nixpkgs unstable

✨ qla4xxx_do_dpc(9) ✨

okay bestie, welcome to the Kernel API Manual 💖 this one's a kernel-side function page, so grab your iced coffee and let's get into it 🫶

🌸 NAME 🌸

qla4xxx_do_dpc — the dpc routine. that's it, that's the name, she's mysterious and she's booked 💅

🎀 SYNOPSIS 🎀

void qla4xxx_do_dpc (struct work_struct *work );

🦋 ARGUMENTS 🦋

  • work — the context you use to get a pointer to the host adapter structure. it's giving "my whole personality is a container struct" energy, and honestly? relatable 🧚

🔥 DESCRIPTION 🔥

so this routine is a task that gets scheduled by the interrupt handler, and its job is to do the background processing for interrupts. no cap, she's the behind-the-scenes main character of the interrupt world 👑

here's the tea: we put her on a task queue that gets consumed whenever the scheduler runs. why? because that way you can literally do anything — like put the process to sleep and so on. it's giving freedom, it's giving flexibility, it's giving "go take a nap bestie, the scheduler's got you" 😴✨

and like, that's actually necessary, because the mid-level tries to sleep when it reaches the driver threshold "host->can_queue". that's the vibe.

⚠️ and this is the part where you pay attention: this can cause a panic if we were in our interrupt code. like, actual kernel panic. not cute. not slay. keep it on the task queue, periodt 💀

🌈 SEE ALSO 🌈

Kernel file ./drivers/scsi/qla4xxx/ql4_os.c — go look, she's right there 🍓

and here's the whole friend group, in order, all of them, i'm not skipping a single one because everyone deserves their moment:

and that's the whole page, bestie 💖✨🎀

cute little sign-off time 🫶 this one lives in ./drivers/scsi/qla4xxx, it's dated October 2026, and it answers to the name qla4xxx_do_dpc(9). go forth, read the source, and don't sleep in your interrupt code, ily 😭💜

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