readx_poll_timeout_atomic(9)

✨ readx_poll_timeout_atomic(9) ✨

okay bestie, welcome to the Kernel API Manual 💅 this one's a little polling macro and honestly she's lowkey iconic — readx_poll_timeout_atomic keeps poking an address until the vibe check passes or she runs out of time 🎀

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🌸 NAME 🌸

readx_poll_timeout_atomic — periodically poll an address until a condition is met or a timeout occurs 🦋

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⭐ SYNOPSIS ⭐

readx_poll_timeout_atomic (op , addr , val , cond , delay_us ,
timeout_us );

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💖 ARGUMENTS 💖

• op — the accessor function 🫶 (she takes addr as her only argument, main character energy fr)
• addr — the address you're polling 👀
• val — the variable you read the value into 🎀
• cond — the break condition, i.e. the thing that makes her stop (usually involves val, iykyk) ✨
• delay_us — how long to udelay between reads, in us — and yes, 0 means tight-loops 😭 please go read the udelay function description for the details and limitations, no cap, it matters
• timeout_us — timeout in us, and 0 means she never times out 💀

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🦋 DESCRIPTION 🦋

so when it's available, you'll probably want to use one of the specialized macros defined below instead of reaching for this macro directly 🙈 like, she works, but the specialized ones are the moment.

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🌈 RETURN 🌈

0 on success, and -ETIMEDOUT when she times out ⏰ either way, the last value read at addr gets stored in val 💜

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👑 SEE ALSO 👑

• Kernel file ./include/linux/iopoll.h 🍓
• poll_timeout_us(9)
• poll_timeout_us_atomic(9)
• read_poll_timeout(9)
• read_poll_timeout_atomic(9)
• readx_poll_timeout(9)

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ngl bestie, don't sleep on the SEE ALSO — the whole friend group is right there and they're all serving 🔥

k that's the whole page, mwah 💋 she lives in ./include/linux and this cutie is dated October 2026 — go poll something, periodt ⭐💅