proc_dointvec_ms_jiffies(9)

🌸 proc_dointvec_ms_jiffies(9) 🌸

okay so bestie, this one's from the Kernel API Manual and it's honestly kind of a little legend — it's the sysctl handler that reads your integers as milliseconds and quietly does the jiffies math for you. lowkey iconic. 💅

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✨ NAME ✨

proc_dointvec_ms_jiffies — read a vector of integers as 1 milliseconds 🕰️

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🦋 SYNOPSIS 🦋

int proc_dointvec_ms_jiffies (const struct ctl_table *table , int dir ,
void *buffer , size_t *lenp , loff_t *ppos );

like, that's the whole signature, no cap ✨

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🎀 ARGUMENTS 🎀

• table — the sysctl table, bestie. it's the whole vibe container 🫶
• dir — TRUE if this is a write to the sysctl file. so like, are we writing or are we reading 👀
• buffer — the user buffer. the actual data lives here 💖
• lenp — the size of the user buffer 📏
• ppos — the current position in the file. where are we in the story rn 📖

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💜 DESCRIPTION 💜

okay so here's what it actually does — it reads/writes up to table->maxlen/sizeof(unsigned int) integer values from/to the user buffer, and the whole thing is treated as an ASCII string. periodt. 🎀

and then the cute part: the values read are assumed to be in 1/1000 seconds, and are converted into jiffies. so you hand it milliseconds, it gives you jiffies, everybody slays. 🔥

returns 0 on success. that's it, that's the win ✨

ngl the ms→jiffies conversion is the entire main character energy of this function, so don't sleep on it 💅

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🌈 SEE ALSO 🌈

• Kernel file ./kernel/time/jiffies.c — literally the source of truth, go look 👑
• proc_dointvec_jiffies(9) — the sibling that skips the millisecond era 🦋
• proc_dointvec_userhz_jiffies(9) — same energy but in user HZ 🌸
• proc_doulongvec_ms_jiffies_minmax(9) — the unsigned long cousin with minmax added in 💀

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and that's the tea, bestie 🍓 this page lives in ./kernel/time, dated October 2026 — mwah, go forth and convert your milliseconds 🧚💖⭐