xtensa: add config option to disable linker relaxation

The default linker behavior is to optimize identical literal values and
remove unnecessary overhead from assembler-generated "longcall" sequences
to reduce code size. Provide an option to disable this behavior to improve
compile time.

Signed-off-by: Chris Zankel <chris@zankel.net>

1 files changed, 11 insertions, 2 deletions

diff --git a/arch/xtensa/Kconfig.debug b/arch/xtensa/Kconfig.debug
index 11c585295dd7..be5fb4c6243f 100644
--- a/arch/xtensa/Kconfig.debug
+++ b/arch/xtensa/Kconfig.debug
@@ -2,6 +2,15 @@ menu "Kernel hacking"
 
 source "lib/Kconfig.debug"
 
-endmenu
-
+config LD_NO_RELAX
+        bool "Disable linker relaxation"
+        default n
+        help
+          Enable this function to disable link-time optimizations.
+          The default linker behavior is to combine identical literal
+          values to reduce code size and remove unnecessary overhead from
+          assembler-generated 'longcall' sequences.
+          Enabling this option improves the link time but increases the
+          code size, and possibly execution time.
 
+endmenu