i915_perf_release(9)

💅 i915_perf_release — like, the whole kernel API manual vibe

Okay bestie, so this page lives in the Kernel API Manual, and it's all about i915_perf_release — the function that handles userspace close() of a stream file. Yes, that's the whole assignment. She's short but she's mighty. 🎀

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✨ SYNOPSIS ✨

int i915_perf_release (struct inode *inode , struct file *file );

That's it. Two args, one int. The way she's so simple but does so much?? iconic. 🔥

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🌸 ARGUMENTS 🌸

• inode — the anonymous inode that's associated with file. She's the quiet one in the group chat, just vibing in the background. 🦋
• file — an i915 perf stream file. This is the main character of this whole operation, ngl. 👑

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💖 DESCRIPTION 💖

So basically, this function cleans up any resources that are still hanging around attached to an open i915 perf stream file. Like when you finally leave the party and someone's gotta turn off the lights and lock up — that's her. 🧹✨

NB: close can't really fail from the userspace point of view. So like… don't stress about error handling from out there? It's giving "the door's already closed, babe." 💀

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⭐ RETURN ⭐

Returns zero on success, or a negative error code. That's the whole story. Simple. Clean. Slay. 💅

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🌈 SEE ALSO 🌈

The kernel file over at ./drivers/gpu/drm/i915/i915_perf.c — and honestly the whole extended i915 perf cinematic universe. Buckle up bestie, there's lore:

• i915 Perf Overview(9)
• i915 Perf History and Comparison with Core Perf(9)
• OA Tail Pointer Race(9)
• struct perf_open_properties(9)
• oa_buffer_check_unlocked(9)
• append_oa_status(9)
• append_oa_sample(9)
• gen8_append_oa_reports(9)
• gen8_oa_read(9)
• gen7_append_oa_reports(9)
• gen7_oa_read(9)
• i915_oa_wait_unlocked(9)
• i915_oa_poll_wait(9)
• i915_oa_read(9)
• oa_get_render_ctx_id(9)
• oa_put_render_ctx_id(9)
• i915_oa_stream_enable(9)
• i915_oa_stream_disable(9)
• i915_oa_stream_init(9)
• i915_perf_read(9)
• i915_perf_poll_locked(9)
• i915_perf_poll(9)
• i915_perf_enable_locked(9)
• i915_perf_disable_locked(9)
• i915_perf_ioctl_locked(9)
• i915_perf_ioctl(9)
• i915_perf_destroy_locked(9)
• i915_perf_open_ioctl_locked(9)
• read_properties_unlocked(9)
• i915_perf_open_ioctl(9)
• i915_perf_register(9)
• i915_perf_unregister(9)
• i915_perf_add_config_ioctl(9)
• i915_perf_remove_config_ioctl(9)
• i915_perf_init(9)
• i915_perf_fini(9)
• i915_perf_ioctl_version(9)

No cap, that's a lot of cross-references. 🫶

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okay that's the whole page, mwah 💋

Brought to you from <pink>./drivers/gpu/drm/i915</pink>, dated October 2026 — like a little time capsule from the kernel, fr fr. Go close that file bestie, you got this. 🍓💜