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CONFIG_KALLSYMS_ALL: Include all symbols in kallsyms

General informations

The Linux kernel configuration item CONFIG_KALLSYMS_ALL:

Help text

Normally kallsyms only contains the symbols of functions for nicer OOPS messages and backtraces (i.e., symbols from the text and inittext sections). This is sufficient for most cases. And only if you want to enable kernel live patching, or other less common use cases (e.g., when a debugger is used) all symbols are required (i.e., names of variables from the data sections, etc).

This option makes sure that all symbols are loaded into the kernel image (i.e., symbols from all sections) in cost of increased kernel size (depending on the kernel configuration, it may be 300KiB or something like this).

Say N unless you really need all symbols, or kernel live patching.



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