i915_gem_obj...uffer_lookup(9)

💅 i915_gem_obj...uffer_lookup(9) 💅

okay so this is a page from the Kernel API Manual, and it's all about i915_gem_obj...uffer_lookup(9) — yes the name is literally truncated with dots, that's just how it is, we don't question it, we respect it 🎀

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✨ NAME ✨

i915_gem_object_frontbuffer_lookup — bestie, this is the one that looks up the object's frontbuffer 👑

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🦋 SYNOPSIS 🦋

struct i915_frontbuffer * i915_gem_object_frontbuffer_lookup (const
struct drm_i915_gem_object *obj );

like literally that's the whole signature, no cap 💖

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🌸 ARGUMENTS 🌸

• obj — the object whose frontbuffer we're looking up. that's it, that's the whole argument, she's lowkey simple and we love that for her 🫶

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🧚 DESCRIPTION 🧚

so what she does is: get a pointer to the object's frontbuffer, if such exists ✨

but okay listen, because this part is important — please note that an RCU mechanism is used to handle stuff like, for example, an ongoing removal of the frontbuffer pointer. so yeah, there's concurrency happening in the background and the RCU machinery is holding it down 😭 she's out here doing real work fr fr

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💀 RETURN 💀

a pointer to the object's frontbuffer, if such exists — or NULL 🌈

(if there's no frontbuffer, you get NULL, that's the vibe check and sometimes the vibe check says no 🙈)

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⭐ SEE ALSO ⭐

• Kernel file ./drivers/gpu/drm/i915/gem/i915_gem_object_frontbuffer.h — go read the header bestie, iykyk 💜

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aaaand that's the page!! 🎀 shoutout to the source tree at ./drivers/gpu/drm/i915/gem and to October 2026 for the date stamp — catch you on the next man page, mwah 💅💖🔥