for_each_console_srcu(9)

💅 for_each_console_srcu

okay so this is a page from the Kernel API Manual — yes we're literally in kernel land, get comfy 🫶

✨ NAME ✨

for_each_console_srcu — the lil iterator that walks over all the registered consoles 👑

🎀 SYNOPSIS 🎀

for_each_console_srcu (con );

🌸 ARGUMENTS 🌸

• con — a struct console pointer that's doing double duty as your loop cursor. it's the main character of the loop, basically 💫

🦋 DESCRIPTION 🦋

so here's the tea ☕ — SRCU does guarantee that the console list stays consistent, but ngl, the individual struct console fields? those can still get updated by other CPUs while you're mid-iteration. so like… the list is stable, the contents are lowkey moving. iykyk 😭

🚨 bestie listen: this requires console_srcu_read_lock to be held. no lock, no vibes. periodt.

the good news? it can be invoked from any context ✨ so wherever you are, you're valid.

👑 SEE ALSO 👑

go off and read these next, they're all iconic in their own way 💖

• Kernel file ./include/linux/console.h
• struct consw(9)
• enum cons_flags(9)
• struct nbcon_state(9)
• enum nbcon_prio(9)
• struct nbcon_context(9)
• struct nbcon_write_context(9)
• struct console(9)
• console_srcu_read_flags(9)
• console_srcu_write_flags(9)
• for_each_console(9)

🌸 and that's the whole page, bestie! source lives in ./include/linux, dated October 2026, and it's the for_each_console_srcu(9) manual page ✨ slay, go iterate responsibly 💅💖