STRUCT DRM_CRTC_CRC(9)

💅 struct drm_crtc_crc(9) 💅

okay bestie, welcome to the Kernel API Manual page for struct drm_crtc_crc(9) — yes, this whole icon is about data supporting CRC capture on a given CRTC. no cap, that's the serve. 🦋

✨ NAME ✨

struct drm_crtc_crc — data supporting CRC capture on a given CRTC 💖

🌸 SYNOPSIS 🌸

okay so here's the whole struct, literally exactly this:

struct drm_crtc_crc {
    spinlock_t lock;
    const char *source;
    bool opened, overflow;
    struct drm_crtc_crc_entry *entries;
    int head, tail;
    size_t values_cnt;
    wait_queue_head_t wq;
};

🫶 Members 🫶

• lock — protects the fields in this struct. lowkey the bodyguard of the group chat. 🔒
• source — name of the currently configured source of CRCs. that's the label on where the CRCs are coming from. ✨
• opened — whether userspace has opened the data file for reading. yes bestie, it's just keeping track. 👀
• overflow — whether an overflow occurred. the “uh oh, we spilled” flag. 😭
• entries — array of entries, with size of DRM_CRC_ENTRIES_NR. the whole lineup, periodt. 🎀
• head — head of circular queue. main character at the front. 👑
• tail — tail of circular queue. the end-of-line bestie. 🐢
• values_cnt — number of CRC values per entry, up to DRM_MAX_CRC_NR. count 'em, but don't exceed the cap. 🔥
• wq — workqueue used to synchronize reading and writing. it keeps the read/write girlies in sync. 🫶

🔗 SEE ALSO 🔗

• Kernel file ./include/drm/drm_debugfs_crc.h
• struct drm_crtc_crc_entry(9)

xoxo, your Unix bestie 💖 this one came from ./include/drm with the date October 2026, and the footer signs off as struct drm_crtc_crc(9). slay! 🌈