tty_unthrottle_safe(9)

💅 tty_unthrottle_safe(9) 💅

okay so bestie, welcome to the Kernel API Manual — this little page is all about tty_unthrottle_safe, and honestly? it's giving "polite bouncer at the flow-control club" ✨

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🌸 NAME 🌸

tty_unthrottle_safe — flow control, but make it careful 🎀

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✨ SYNOPSIS ✨

bool tty_unthrottle_safe (struct tty_struct *tty );

like, it returns a bool and takes exactly one arg. that's it. no cap. 🦋

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🫶 ARGUMENTS 🫶

• tty — the terminal, obviously 💖 your main character struct

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💜 DESCRIPTION 💜

so this one is basically tty_unthrottle's more cautious sibling — same vibe, but with a vibe check first 🔥

it'll only attempt the unthrottle if tty->flow_change is TTY_UNTHROTTLE_SAFE. that's the whole gate. iykyk 💅

and why, you ask? because it prevents an accidental unthrottle due to race conditions when unthrottling is conditional on factors evaluated prior to unthrottling 😭 like, imagine deciding to unthrottle based on stuff you checked a hot sec ago and then the world changed underneath you — yeah. no. this function said not today.

🚨 fr fr: this is the race-condition-safe path. don't skip the check, bestie, that's the entire point of this function existing.

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⭐ RETURN ⭐

returns true if tty is unthrottled — or if it was already unthrottled (iconic, no work needed, we love a low-effort win 👑)

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🌈 SEE ALSO 🌈

kernel file ./drivers/tty/tty_ioctl.c plus the whole friend group 🫶:

• tty_chars_in_buffer(9)
• tty_write_room(9)
• tty_driver_flush_buffer(9)
• tty_unthrottle(9)
• tty_throttle_safe(9)
• tty_wait_until_sent(9)
• tty_termios_copy_hw(9)
• tty_termios_hw_change(9)
• tty_get_char_size(9)
• tty_get_frame_size(9)
• tty_set_termios(9)
• set_termios(9)
• set_sgttyb(9)
• tty_change_softcar(9)
• tty_mode_ioctl(9)

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🎀 and that's the page!! brought to you by ./drivers/tty, dated October 2026, living its best life as tty_unthrottle_safe(9) — slay, stay unthrottled, and pls evaluate your factors after the check 💖✨🧚‍♀️