The kernel’s command-line parameters（1）

Time

2020.10.15

Summary

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Notes

kernel parameters as implemented by the __setup(), core_param() and module_param()

The kernel parses parameters from the kernel command line up to “--“; if it doesn’t recognize a parameter and it doesn’t contain a ‘.’, the parameter gets passed to init: parameters with ‘=’ go into init’s environment, others are passed as command line arguments to init. Everything after “--” is passed as an argument to init.
内核从内核命令行解析参数直至“-”； 如果它不能识别参数并且不包含“。”，则该参数将传递给init：带有“ =”的参数进入init的环境，其他参数则作为命令行参数传递给init。 “-”之后的所有内容均作为init的参数传递。

Module parameters can be specified in two ways: via the kernel command line with a module name prefix, or via modprobe, e.g.:

Hyphens (dashes) and underscores are equivalent in parameter names, so:
log_buf_len=1M print-fatal-signals=1
can also be entered as:
log-buf-len=1M print_fatal_signals=1

The command “modinfo -p \({modulename}” shows a current list of all parameters of a loadable module.Loadable modules, after being loaded into the running kernel, also reveal their parameters in /sys/module/\){modulename}/parameters/. Some of these parameters may be changed at runtime by the command echo -n \({value} > /sys/module/\){modulename}/parameters/${parm}.

The parameters listed below are only valid if certain kernel build options were enabled and if respective hardware is present.
仅当启用了某些内核构建选项且存在相应的硬件时，以下列出的参数才有效。

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ascending order
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