kbuild: add CONFIG_VMLINUX_MAP expert option

[mirror_ubuntu-jammy-kernel.git] / lib / Kconfig.debug

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 2779c29d9981f1d0587005d8ea916fa52b07e574..b479ae609a3174c145b0302fea25f5605577b8f0 100644 (file)
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -449,6 +449,16 @@ config VMLINUX_VALIDATION
        depends on STACK_VALIDATION && DEBUG_ENTRY && !PARAVIRT
        default y
 
+config VMLINUX_MAP
+       bool "Generate vmlinux.map file when linking"
+       depends on EXPERT
+       help
+         Selecting this option will pass "-Map=vmlinux.map" to ld
+         when linking vmlinux. That file can be useful for verifying
+         and debugging magic section games, and for seeing which
+         pieces of code get eliminated with
+         CONFIG_LD_DEAD_CODE_DATA_ELIMINATION.
+
 config DEBUG_FORCE_WEAK_PER_CPU
        bool "Force weak per-cpu definitions"
        depends on DEBUG_KERNEL