fb_notifier_call_chain(9)

💖 fb_notifier_call_chain(9) 💖

okay bestie, so this is fb_notifier_call_chain from the Kernel API Manual, and it's literally the girl whose whole job is telling everybody about fb_events ✨ — like a group-chat broadcast for the framebuffer world, no cap.

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🌸 NAME 🌸

fb_notifier_call_chain — notify clients of fb_events. that's it, that's the gig 🎀 she pings the whole notifier chain so all the clients find out what's going on. iconic behaviour honestly.

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✨ SYNOPSIS ✨

int fb_notifier_call_chain (unsigned long val , void *v );

yup, she takes two things and hands you back an int. short and slay 💅

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🦋 ARGUMENTS 🦋

• val — the value passed to the callback. she carries it on through to whoever's waiting on the other end, like a little messenger 🧚
• v — the pointer passed to the callback. just a pointer, doing pointer things, passed along exactly as given 🔥

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⭐ RETURN ⭐

the return value of the last notifier function. that's the one — the last one — no more, no less 👑

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/video/fbdev/core/fb_notify.c — the source, go read it, it's giving main character energy fr fr 📖
• fb_register_client(9)
• fb_unregister_client(9)

like, if you're calling the chain you probably also wanna know how clients get on and off it, iykyk 🫶

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lowkey reminder bestie: this page describes what's in the source above and nowhere else — no extra lore, no invented behaviour, periodt 💀

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and that's the whole page, bestie! 💜 brought to you from ./drivers/video/fbdev/core, dated October 2026, and starring fb_notifier_call_chain(9) herself — mwah, go forth and notify 😭🌸