software_resume_initcall(9)

🌸 software_resume_initcall(9) 🌸

okay so bestie, welcome to the Kernel API Manual — this page is all about software_resume_initcall(9), and it's lowkey the “resume from a saved hibernation image” girlie. ✨

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💅 NAME 💅

software_resume_initcall — Resume from a saved hibernation image. 💖

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✨ SYNOPSIS ✨

int software_resume_initcall (void );

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🎀 ARGUMENTS 🎀

• void — no arguments, not even one tiny little argument. 🫶

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🦋 DESCRIPTION 🦋

okay so this routine gets called as a late initcall — by that point, all the devices have already been discovered and initialized. yes, all of them. 💅

The image-reading code gets called to check whether there's a hibernation image available for reading. 👀 If there is one, the devices get quiesced and the contents of memory get restored from the saved image. that's the whole vibe.

If this is successful, control reappears in the restored target kernel in hibernation_snapshot, which returns to hibernate. 😭✨ iconic.

Otherwise, the routine attempts to recover gracefully and make the kernel return to the normal mode of operation. not me being dramatic, that's just the graceful fallback. 💀

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🌈 SEE ALSO 🌈

Kernel file ./kernel/power/hibernate.c — yes bestie, that exact path. 🫶

• pm_hibernation_mode_is_suspend(9)
• hibernation_set_ops(9)
• platform_begin(9)
• platform_end(9)
• platform_pre_snapshot(9)
• platform_leave(9)
• platform_finish(9)
• platform_pre_restore(9)
• platform_restore_cleanup(9)
• platform_recover(9)
• swsusp_show_speed(9)
• create_image(9)
• hibernation_snapshot(9)
• resume_target_kernel(9)
• hibernation_restore(9)
• hibernation_platform_enter(9)
• power_down(9)
• hibernate(9)
• hibernate_quiet_exec(9)

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source/version: ./kernel/power · date: October 2026 · and it's still software_resume_initcall(9) — mwah 💋💖