FUNCTION::UDELAY(3stap) Guru tapsets FUNCTION::UDELAY(3stap)

# [NAME](#NAME)

function::udelay - microsecond delay

# [SYNOPSIS](#SYNOPSIS)

```


    udelay(us:long)
```

# [ARGUMENTS](#ARGUMENTS)

*us*

Number of microseconds to delay.

# [DESCRIPTION](#DESCRIPTION)

This function inserts a multi-microsecond busy-delay into a probe handler. It requires guru mode.

# [SEE ALSO0](#SEE_ALSO0)

[*tapset::guru-delay*(3stap)](/man/enterprise-packages/systemtap/tapset::guru-delay.3stap)

September 2026 SystemTap Tapset Reference Ver

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Document: function::udelay(3stap) from systemtap 5.6-r1 (Chainguard OS)
Source: https://sourceware.org/git/systemtap.git