devm_kmemdup(9)

bestie, this is devm_kmemdup(9) from the Kernel API Manual, and it's literally the resource-managed glow-up of kmemdup 💅

✨ NAME ✨

devm_kmemdup — resource-managed kmemdup (yes, the memory cleans up after itself, main character energy fr fr)

✨ SYNOPSIS ✨

void * devm_kmemdup (struct device *dev , const void *src , size_t len ,
gfp_t gfp );

✨ ARGUMENTS ✨

• dev — the device this memory belongs to 🫶 (it's giving "this allocation is on your tab")
• src — the memory region you wanna duplicate 🌸
• len — how long that memory region is, bestie 📏
• gfp — the GFP mask to use ✨

✨ DESCRIPTION ✨

Okay so what it does is duplicate a region of memory using resource-managed kmalloc 💖. That's the whole vibe — it's kmemdup but with the devres magic so the memory is tracked against dev. Iconic behavior honestly.

✨ SEE ALSO ✨

lowkey the whole devres friend group is here, no cap 🫶 — kernel file ./drivers/base/devres.c plus:

• __devres_alloc_node(9)
• devres_for_each_res(9)
• devres_free(9)
• devres_add(9)
• devres_find(9)
• devres_get(9)
• devres_remove(9)
• devres_destroy(9)
• devres_release(9)
• devres_release_all(9)
• devres_open_group(9)
• devres_close_group(9)
• devres_remove_group(9)
• devres_release_group(9)
• __devm_add_action(9)
• devm_remove_action_nowarn(9)
• devm_release_action(9)
• devm_kmalloc(9)
• devm_krealloc(9)
• devm_kstrdup(9)
• devm_kstrdup_const(9)
• devm_kvasprintf(9)
• devm_kasprintf(9)
• devm_kfree(9)
• devm_kmemdup_const(9)
• devm_get_free_pages(9)
• devm_free_pages(9)
• __devm_alloc_percpu(9)

and that's the whole page, bestie — source <pink>./drivers/base</pink>, dated October 2026, page devm_kmemdup(9). go forth and duplicate responsibly 💜✨