tracing_map_read_var(9)

👑 tracing_map_read_var 👑

okay bestie, welcome to the Kernel API Manual — this page is literally all about tracing_map_read_var, and it’s giving “tiny function, very important job.” 🫶✨

---

🎀 NAME 🎀

tracing_map_read_var — returns the value of a tracing_map_elt’s variable field. periodt. 💅

---

✨ SYNOPSIS ✨

u64 tracing_map_read_var (struct tracing_map_elt *elt , unsigned int i
);

---

🌸 ARGUMENTS 🌸

• elt — the tracing_map_elt. that’s the instance we’re working with, bestie 🦋
• i — the index of the given variable associated with the tracing_map_elt. lowkey important, highkey specific 💖

---

🧚 DESCRIPTION 🧚

So like, this function retrieves the value of variable i associated with the specified tracing_map_elt instance. no cap, that’s the vibe. ✨

And the index i is the index returned by the call to tracing_map_add_var when the tracing map was set up. iykyk — that’s the number you’re working with here. 💅

---

💜 RETURN 💜

The variable value associated with field i for elt. that’s the whole return situation, bestie 🫶

---

🌈 SEE ALSO 🌈

Kernel file: ./kernel/trace/tracing_map.c

The whole squad, fr fr:

• tracing_map_update_sum(9)
• tracing_map_read_sum(9)
• tracing_map_set_var(9)
• tracing_map_var_set(9)
• tracing_map_read_var_once(9)
• tracing_map_add_sum_field(9)
• tracing_map_add_var(9)
• tracing_map_add_key_field(9)
• tracing_map_insert(9)
• tracing_map_lookup(9)
• tracing_map_destroy(9)
• tracing_map_clear(9)
• tracing_map_create(9)
• tracing_map_init(9)
• tracing_map_destroy_sort_entries(9)
• tracing_map_sort_entries(9)

---

okay that’s the whole page, bestie 💋 — footer source/version: ./kernel/trace; date: October 2026; page: tracing_map_read_var(9). slay, bye! 💖🎀✨