i915_perf_unregister(9)

💅 i915_perf_unregister — from the Kernel API Manual, bestie

✨ NAME ✨

i915_perf_unregister — the glow-down ritual that hides i915-perf from userspace 🫶

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🌸 SYNOPSIS 🌸

void i915_perf_unregister (struct drm_i915_private *i915);

No cap, that's the whole signature. It's void, so it hands literally nothing back to you — no return value, no little goodbye gift 😭

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🎀 ARGUMENTS 🎀

• i915 — your i915 device instance. That's the one and only thing it wants from you, bestie 💖

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🦋 DESCRIPTION 🦋

okay so here's the tea ☕ — the i915-perf state cleanup is split up into two moments. There's the 'unregister' part, and this function is it: i915_perf_unregister hides i915-perf from userspace 👀✨ Then, once that's done, the remaining state gets cleaned up over in i915_perf_fini.

the way that this is just the hide-and-tidy half of the job and i915_perf_fini picks up the rest… it's giving teamwork, honestly 💅

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🌈 SEE ALSO 🌈

first up, the source of truth: Kernel file ./drivers/gpu/drm/i915/i915_perf.c 📁 — go read it, iykyk

and then the whole friend group of related pages, all (9), no one left out 🫶:

• 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_release(9)
• i915_perf_open_ioctl_locked(9)
• read_properties_unlocked(9)
• i915_perf_open_ioctl(9)
• i915_perf_register(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)

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lowkey a whole squad of (9) pages, and this one is just the unregister girlie saying bye to userspace before i915_perf_fini finishes the job 🧚

that's the whole page, bestie, you ate that 💅✨

sign-off szn: this came from the source/version tag ./drivers/gpu/drm/i915, dated October 2026 🎀🍓 slay, go read the kernel source ⭐👑