radeon_acpi_...ance_request(9)

okay so bestie, welcome to the Kernel API Manual — this one is a radeon ACPI function and it is short, so we're gonna get into it fast. ✨

🌸 NAME 🌸

radeon_acpi_pcie_performance_request — the NAME section is literally just the function name and a dash, no extra descriptor. Bestie, that's the whole vibe: this function is the main character and it knows it. 💅

🦋 SYNOPSIS 🦋

int radeon_acpi_pcie_performance_request (struct radeon_device *rdev , u8 perf_req , bool advertise );

🎀 ARGUMENTS 🎀

• rdev — a radeon_device pointer. That's the device bestie you're handing over. 💖
• perf_req — the requested perf level (pcie gen speed). Literally the speed you're requesting. 🚀
• advertise — set advertise caps flag if set. Yes, that's the exact energy of the line; no extra lore, no cap. 🙈

🔥 DESCRIPTION 🔥

Okay so what it actually does: it executes the PCIE_PERFORMANCE_REQUEST method to change the pcie gen speed. It does this on all asics. It returns 0 on success, and an error on failure. That's the tea. 🍵

🌈 SEE ALSO 🌈

Kernel file: ./drivers/gpu/drm/radeon/radeon_acpi.c — that's the source file, bestie. Then go say hi to these icons:

• radeon_atif_call(9)
• radeon_atif_parse_notification(9)
• radeon_atif_parse_functions(9)
• radeon_atif_verify_interface(9)
• radeon_atif_get_notification_params(9)
• radeon_atif_get_sbios_requests(9)
• radeon_atif_handler(9)
• radeon_atcs_call(9)
• radeon_atcs_parse_functions(9)
• radeon_atcs_verify_interface(9)
• radeon_acpi_is_pcie_performance_request_supported(9)
• radeon_acpi_pcie_notify_device_ready(9)
• radeon_acpi_event(9)
• radeon_acpi_init(9)
• radeon_acpi_fini(9)

byeee 🫶 this page's source is ./drivers/gpu/drm/radeon, it's dated October 2026, and its title is radeon_acpi_...ance_request(9) — love that for us. 💖✨🎀