swsusp_show_speed(9)

💖 swsusp_show_speed(9) 💖

ok so this is a page straight out of the Kernel API Manual, and honestly? it's a little cutie. it's giving "stopwatch for hibernation" energy. bestie, let's get into it ✨

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🌸 NAME 🌸

swsusp_show_speed — literally just prints the time elapsed between two events during hibernation. that's it. that's the whole job. and it ate 💅

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🦋 SYNOPSIS 🦋

void swsusp_show_speed (ktime_t start , ktime_t stop , unsigned nr_pages
, char *msg );

no cap, that's the exact signature, don't come for me about the spacing, i copied it character for character 🫶

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🎀 ARGUMENTS 🎀

ok so four things go in, and here's what each one is doing:

• start — the starting event. like, the moment it all began. the beginning of the story 🌅
• stop — the final event. the end credits. the part where we look back and go "wow, that was a lot" 😭
• nr_pages — the number of memory pages processed between start and stop. so like, how much actual work happened in that window of time 🧚
• msg — an additional diagnostic message to print. your little custom caption on the vibes 🌈

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⭐ SEE ALSO ⭐

• Kernel file ./kernel/power/hibernate.c — the icon, the blueprint, the main character 👑
• 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)
• 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)
• software_resume_initcall(9)

like, the whole friend group fr fr. go read them too, iykyk 💜

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ok that's the whole page bestie. nothing scary, no warnings, no bugs listed — just a tidy little speed-printer. slay. periodt. 🍓

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and that's a wrap! this gem lives in ./kernel/power and this particular version is dated October 2026, page swsusp_show_speed(9). mwah, go forth and hibernate responsibly 💖💫