i915_perf_ioctl(9)

okay bestie, welcome to i915_perf_ioctl(9) from the Kernel API Manual — this is the page where we support ioctl() usage with i915 perf stream FDs. periodt. 💖

🎀 NAME 🎀

i915_perf_ioctl — support ioctl() usage with i915 perf stream FDs

🌸 SYNOPSIS 🌸

long i915_perf_ioctl (struct file *file , unsigned int cmd , unsigned
       long arg );

🦋 ARGUMENTS 🦋

• file — an i915 perf stream file
• cmd — the ioctl request
• arg — the ioctl data

✨ DESCRIPTION ✨

okay so the description is literally: Implementation deferred to i915_perf_ioctl_locked. that's the whole tea, bestie. no cap 🫶

💖 RETURN 💖

zero on success or a negative error code. Returns -EINVAL for an unknown ioctl request. so if the request is unknown, it's giving -EINVAL, and that's on periodt. 😭

🔥 SEE ALSO 🔥

the full squad, no cap:

• Kernel file ./drivers/gpu/drm/i915/i915_perf.c
• 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_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_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)

okay bye bestie — source/version ./drivers/gpu/drm/i915, dated October 2026. mwah 💋✨