kexec_walk_resources(9)

💖 kexec_walk_resources(9) 💖

okay so bestie, welcome to the Kernel API Manual ✨ this little cutie is called kexec_walk_resources, and it's giving "let's take a stroll through memory" energy 🚶♀️💨

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🌸 NAME 🌸

kexec_walk_resources — call func(data) on free memory regions 🫶

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✨ SYNOPSIS ✨

int kexec_walk_resources (struct kexec_buf *kbuf , int (*func)(struct
resource *, void *) );

like, that's the whole vibe. two args, one function pointer, no cap 💅

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🎀 ARGUMENTS 🎀

• kbuf — the context info for the search 🧚 and also like… it gets passed to func too, so it's doing double duty, main character energy fr
• func — the function you call for each memory region 💖 every single one, bestie

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⭐ RETURN ⭐

so here's the tea ☕ the memory walk stops the moment func returns a non-zero value — and that value is what gets returned to you, periodt ✋

but if all the free regions get visited and func never returns non-zero? then you get zero back 🌈 easy.

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🦋 SEE ALSO 🦋

• Kernel file ./kernel/kexec_file.c 📁
• kexec_locate_mem_hole(9)
• kexec_add_buffer(9)

go read those too, iykyk 👑

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lowkey important: if func goes non-zero, the walk is done — no finishing the tour, no "one more region", it's over bestie 💀

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and that's the whole page, mwah 💋 this one lives under ./kernel, dated October 2026, and it's literally kexec_walk_resources(9) — slay, go forth and walk those resources 🌸🎀💜