From: Jason Wessel <[EMAIL PROTECTED]> This patch adds in the ability to unoptimize a single kernel module to make source stepping more linear and not optimize out variables that the developer might like to inspect. It used with adding COPTIMIZE=-O0 to the build line when doing something like a single kernel module only build. Or you could use it to override the default optimization level entirely.
Signed-off-by: Jason Wessel <[EMAIL PROTECTED]> Signed-off-by: Ingo Molnar <[EMAIL PROTECTED]> Signed-off-by: Thomas Gleixner <[EMAIL PROTECTED]> --- Makefile | 8 ++++++-- 1 files changed, 6 insertions(+), 2 deletions(-) diff --git a/Makefile b/Makefile index 89f2d8b..65aa7f8 100644 --- a/Makefile +++ b/Makefile @@ -502,10 +502,14 @@ endif # $(dot-config) all: vmlinux ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE -KBUILD_CFLAGS += -Os +COPTIMIZE += -Os else -KBUILD_CFLAGS += -O2 +COPTIMIZE += -O2 endif +# COPTIMIZE may be overridden on the make command line with +# make ... COPTIMIZE="" +# The resulting object may be easier to debug with KGDB +KBUILD_CFLAGS += $(COPTIMIZE) include $(srctree)/arch/$(SRCARCH)/Makefile -- 1.5.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
