STRUCT DC_PROBE_STATUS(9)

💅 struct dc_probe_status(9) 💅

okay so bestie, welcome to the Kernel API Manual entry for struct dc_probe_status — literally the lil result basket for a probe. no cap, this one is short but every field matters, so let’s get into it 💖

🌸 NAME 🌸

struct dc_probe_status — results for a probe.

✨ SYNOPSIS ✨

       struct dc_probe_status {
           bool valid;
           enum dc_probe_type         type;
           union {
             uint32_t bandwidth_mbps;
             struct dc_probe_latencies latency;
             uint32_t urgent_assertion_count;
             uint32_t prefetch_data_size;
           } u;
        };

🫶 Members 🫶

• valid — true if a measurement was latched. like, the vibe check passed and a value actually got locked in ✨
• type — type of the probe that produced this result. this tells you which probe said “hey, here’s your data” 👑
• u.bandwidth_mbps — peak BW in Mbps (DC_PROBE_PEAK_MEM_BW). bandwidth girlie reporting for duty 🔥
• u.latency — min/max/avg memory latency in ns (DC_PROBE_MEM_LATENCY), stored as struct dc_probe_latencies. the full latency trio, iconic 😭
• u.urgent_assertion_count — number of urgent assertion events (DC_PROBE_URGENT_ASSERTION_COUNT). counting the urgent moments fr fr 💀
• u.prefetch_data_size — total prefetch data in bytes (DC_PROBE_PREFETCH_DATA_SIZE). all the prefetch bytes, summed up 🎀

🔥 SEE ALSO 🔥

Kernel file ./drivers/gpu/drm/amd/display/dc/dc.h:

• MAX_SURFACES(9)
• MAX_PLANES(9)
• color-management-caps(9)
• struct rom_curve_caps(9)
• struct dpp_color_caps(9)
• struct mpc_color_caps(9)
• struct dc_color_caps(9)
• enum pipe_split_policy(9)
• dc_check_state_update(9)
• dc_update_state(9)
• dc_update_state_init(9)
• dc_update_state_prepare(9)
• dc_update_state_execute(9)
• dc_update_state_cleanup(9)
• struct dc_probe_latencies(9)
• enum dc_get_status_type(9)
• struct dc_get_status_options(9)
• struct dc_state_status(9)
• dc_state_get_status(9)
• struct dc_validation_stream(9)
• struct dc_validation_set(9)
• dc_get_underflow_debug_data_for_otg(9)
• dc_capture_register_software_state(9)
• dc_get_qos_info(9)
• dc_override_memory_bandwidth_request(9)

and that’s the whole page, bestie 🦋 huge shoutout to the source path ./drivers/gpu/drm/amd/display/dc and the date October 2026 — this has been struct dc_probe_status(9), byeee 💖