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init/Kconfig: update KALLSYMS_ALL help text
CONFIG_KALLSYMS_ALL is required for kernel live patching which is a common use case that is enabled in some major distros. Update the Kconfig help text to reflect that. While at it, s/e.g./i.e./ to match the text intention. Signed-off-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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@ -1715,16 +1715,17 @@ config KALLSYMS_ALL
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help
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Normally kallsyms only contains the symbols of functions for nicer
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OOPS messages and backtraces (i.e., symbols from the text and inittext
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sections). This is sufficient for most cases. And only in very rare
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cases (e.g., when a debugger is used) all symbols are required (e.g.,
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names of variables from the data sections, etc).
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sections). This is sufficient for most cases. And only if you want to
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enable kernel live patching, or other less common use cases (e.g.,
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when a debugger is used) all symbols are required (i.e., names of
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variables from the data sections, etc).
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This option makes sure that all symbols are loaded into the kernel
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image (i.e., symbols from all sections) in cost of increased kernel
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size (depending on the kernel configuration, it may be 300KiB or
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something like this).
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Say N unless you really need all symbols.
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Say N unless you really need all symbols, or kernel live patching.
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config KALLSYMS_ABSOLUTE_PERCPU
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bool
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