---
name: "function::MAJOR"
section: "3stap"
platform: "linux"
package: "systemtap-doc"
version: "5.1-5"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/function::MAJOR"
---

# function::MAJOR(3stap)

Extract major device number from a kernel device number (kdev\_t)

## NAME

function::MAJOR - Extract major device number from a kernel device number (kdev\_t)

## SYNOPSIS

```
    MAJOR:long(dev:long)
```

## ARGUMENTS

*dev*

Kernel device number to query.

## SEE ALSO0

[*tapset::dev*(3stap)](/tapset::dev/3stap.md)