STRUCT CORESIGHT_DESC(9)

💖 struct coresight_desc (9) — the Kernel API Manual, bestie edition ✨

okay so. this is a page about struct coresight_desc, and no cap, the whole ~vibe~ is: description of a component required from drivers. that's it, that's the name section, but like... it's the main character of this whole page, so let's get into it 🫶

✨ SYNOPSIS ✨

struct coresight_desc {
    enum coresight_dev_type type;
    union coresight_dev_subtype subtype;
    const struct coresight_ops *ops;
    struct coresight_platform_data *pdata;
    struct device *dev;
    const struct attribute_group **groups;
    const char *name;
    struct csdev_access access;
    u32 flags;
    int cpu;
 };

like, literally just copy it, don't @ me 💅

🎀 MEMBERS 🎀

here's the lineup, going member by member, no skips, we respect all ten of them:

• type — as defined by coresight_dev_type. that's the whole description bestie, it's giving "go look at the other struct" energy 🦋
• subtype — as defined by coresight_dev_subtype. same situation, different union 🌸
• ops — the generic operations for this component, as defined by coresight_ops. this is the "what can it actually do" field 💅
• pdata — platform data collected from DT. iykyk, DT = device tree, and this field is where that info lives 🧚
• dev — The device entity associated to this component. your component's plus-one 🫶
• groups — operations specific to this component, and here's the tea: these will end up in the component's sysfs sub-directory. so they're not just vibes, they're visible vibes ✨
• name — name for the coresight device, also shown under sysfs. it's the component's instagram handle, lowkey 👑
• access — Describe access to the device. short and iconic 🌈
• flags — The descritpion flags. (yes, "descritpion" — that's how it's spelled in the source, i'm not fixing it, character for character baybee 💀)
• cpu — The CPU this component is affined to. it has a favourite core and it's not subtle ⭐

💜 SEE ALSO 💜

Kernel file ./include/linux/coresight.h, plus this absolutely stacked friend group of references — all of them, in order, no cuts 🎀

• union coresight_dev_subtype(9)
• struct coresight_platform_data(9)
• struct csdev_access(9)
• struct coresight_connection(9)
• struct coresight_sysfs_link(9)
• struct coresight_device(9)
• struct coresight_path(9)
• struct coresight_ops_sink(9)
• struct coresight_ops_link(9)
• struct coresight_ops_source(9)
• struct coresight_ops_helper(9)
• struct coresight_ops_panic(9)

go read the header file fr fr, it's got the lore 📖

mwah, that's the page 💋 this little gem lives at ./include/linux and it's dated October 2026 — so yeah, future-dated, main character energy only 🌟 slay 🦋✨