CONFIG_PRINTK_TIME: Show timing information on printks

General informations

The Linux kernel configuration item CONFIG_PRINTK_TIME:

• prompt: Show timing information on printks
• type: bool
• depends on: CONFIG_PRINTK
• defined in lib/Kconfig.debug
• found in Linux kernels: 2.6.12–2.6.39, 3.0–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.11, 6.12-rc+HEAD

Help text

Selecting this option causes time stamps of the printk() messages to be added to the output of the syslog() system call and at the console.

The timestamp is always recorded internally, and exported to /dev/kmsg. This flag just specifies if the timestamp should be included, not that the timestamp is recorded.

The behavior is also controlled by the kernel command line parameter printk.time=1. See Documentation/admin-guide/kernel-parameters.rst

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The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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