x86: kallsyms: disable absolute percpu symbols on !SMP
scripts/kallsyms.c has a special --absolute-percpu command line option which deals with the zero based per cpu offsets that are used when building for SMP on x86_64. This means that the option should only be passed in that case, so add a Kconfig symbol with the correct predicate, and use that instead. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Tested-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Kees Cook <keescook@chromium.org> Tested-by: Kees Cook <keescook@chromium.org> Acked-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Ingo Molnar <mingo@kernel.org> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Michal Marek <mmarek@suse.cz> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
parent
6b8c69e438
commit
4d5d5664c9
|
@ -1420,6 +1420,10 @@ config KALLSYMS_ALL
|
|||
|
||||
Say N unless you really need all symbols.
|
||||
|
||||
config KALLSYMS_ABSOLUTE_PERCPU
|
||||
bool
|
||||
default X86_64 && SMP
|
||||
|
||||
config PRINTK
|
||||
default y
|
||||
bool "Enable support for printk" if EXPERT
|
||||
|
|
|
@ -86,7 +86,7 @@ kallsyms()
|
|||
kallsymopt="${kallsymopt} --page-offset=$CONFIG_PAGE_OFFSET"
|
||||
fi
|
||||
|
||||
if [ -n "${CONFIG_X86_64}" ]; then
|
||||
if [ -n "${CONFIG_KALLSYMS_ABSOLUTE_PERCPU}" ]; then
|
||||
kallsymopt="${kallsymopt} --absolute-percpu"
|
||||
fi
|
||||
|
||||
|
|
Loading…
Reference in New Issue
Block a user