show_hibernate(9)

💅 show_hibernate(9) — like, the Kernel API Manual page you actually wanna read

okay bestie, so this page lives in the Kernel API Manual, and its whole name is show_hibernate(9). Yes, it's a section 9 page, no cap. Let's get into it ✨

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🌸 NAME

show_hibernate — literally just reports who's responsible for updating the device tree, that's the whole vibe 🫶

🎀 SYNOPSIS

ssize_t show_hibernate (struct device *dev , struct device_attribute
*attr , char *buf );

Same signature, exactly, don't @ me 💖

🦋 ARGUMENTS

• dev — the subsys root device. that's your main character right there 👑
• attr — the device attribute struct, iconic as always
• buf — a buffer. it's giving storage. it's giving place-to-put-text 🍓

✨ DESCRIPTION

So the whole point: this reports whether a device tree update is performed by the kernel after a resume — or whether drmgr has to coordinate that update from user space instead. Two very different vibes, iykyk.

Return value: 0 if drmgr is to initiate update, and 1 otherwise. That's it. That's the tea. ☕

💜 SEE ALSO

• Kernel file ./arch/powerpc/platforms/pseries/suspend.c — go read it, fr fr
• pseries_suspend_begin(9)
• pseries_suspend_enter(9)
• store_hibernate(9)
• pseries_suspend_sysfs_register(9)
• pseries_suspend_init(9)

All of these are the friend group, they come as a set 🌈

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okay quick reminder bestie: every single one of those references is real and intentional — I didn't invent a single function name, and you shouldn't either 💀

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⭐ and that's the page!! this lil beauty came from ./arch/powerpc/platforms/pseries, dated October 2026. slay, periodt, go update that device tree responsibly 🧚‍♀️💖