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-rw-r--r--init/Kconfig16
1 files changed, 5 insertions, 11 deletions
diff --git a/init/Kconfig b/init/Kconfig
index 922848a094d7..80fe60fa77fb 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1411,13 +1411,6 @@ config CC_OPTIMIZE_FOR_PERFORMANCE
with the "-O2" compiler flag for best performance and most
helpful compile-time warnings.
-config CC_OPTIMIZE_FOR_PERFORMANCE_O3
- bool "Optimize more for performance (-O3)"
- depends on ARC
- help
- Choosing this option will pass "-O3" to your compiler to optimize
- the kernel yet more for performance.
-
config CC_OPTIMIZE_FOR_SIZE
bool "Optimize for size (-Os)"
help
@@ -1733,16 +1726,17 @@ config KALLSYMS_ALL
help
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 in very rare
- cases (e.g., when a debugger is used) all symbols are required (e.g.,
- names of variables from the data sections, etc).
+ 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.
+ Say N unless you really need all symbols, or kernel live patching.
config KALLSYMS_ABSOLUTE_PERCPU
bool