Add option to enable -Wframe-larger-than= on gcc 4.4

[safe/jmp/linux-2.6] / lib / Kconfig.debug

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 623ef24..754cc00 100644 (file)
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -25,6 +25,17 @@ config ENABLE_MUST_CHECK
          suppress the "warning: ignoring return value of 'foo', declared with
          attribute warn_unused_result" messages.
 
+config FRAME_WARN
+       int "Warn for stack frames larger than (needs gcc 4.4)"
+       range 0 8192
+       default 1024 if !64BIT
+       default 2048 if 64BIT
+       help
+         Tell gcc to warn at build time for stack frames larger than this.
+         Setting this too low will cause a lot of warnings.
+         Setting it to 0 disables the warning.
+         Requires gcc 4.4
+
 config MAGIC_SYSRQ
        bool "Magic SysRq key"
        depends on !UML