devres_release_all(9)

💅 devres_release_all — the Kernel API Manual, but make it make sense

okay so bestie, this page is called devres_release_all, and it lives in section 9 of the Kernel API Manual. That's the kernel-adjacent girlies' section, iykyk. Let's get into it ✨

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🎀 SYNOPSIS

int devres_release_all (struct device *dev );

Like, that's it. That's the whole call. One argument, one int coming back at you. Slay.

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🌸 ARGUMENTS

• dev — the device you want to release resources for. That's the whole vibe. You hand it a device, it does the cleanup thing. 🫶

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✨ DESCRIPTION

Picture this: you've got a dev, and it's holding onto a whole bunch of managed resources. devres_release_all releases all of them. Every single one. The whole group chat of resources, gone.

And when does this happen, you ask? It's called on driver detach. So when the driver's like "ok I'm leaving", this function is the one making sure nothing gets left behind. No cap, it's the responsible friend of the kernel. 💖

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🦋 SEE ALSO

okay this is the part where the manpage just lists literally everyone in the friend group, and honestly? iconic. Here's the full roster, in the original order, no one left out:

• the kernel file ./drivers/base/devres.c
• __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_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(9)
• devm_kmemdup_const(9)
• devm_get_free_pages(9)
• devm_free_pages(9)
• __devm_alloc_percpu(9)

main character energy from the entire devm_* family, honestly. 🌈

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fr fr though — if you're here reading the SEE ALSO section, go read those pages too. They're the ones that explain what all these resources actually are. This page just does the releasing. 💀

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🌸 that's the whole page, bestie. This gem comes from ./drivers/base (that's the source, and also the version info, we're keeping it exactly as-is), and the date on it is October 2026. Periodt. ✨💅🧚