Messages in this thread Patch in this message | | | Subject | [PATCH, RFC] Add option for stripping modules while installing them | From | "Theodore Ts'o" <> | Date | Sun, 21 May 2006 19:06:15 -0400 |
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This function adds support for stripping modules while they are being installed. CONFIG_DEBUG_KERNEL (which will probably become more popular as developers use kdump) causes the size of the installed modules to grow by a factor of 9 or so.
Some kernel package systems solve this problem by stripping the debug information from /lib/modules after running "make modules_install", but that may not work for people who are installing directly into /lib/modules --- root partitions that were sized to handle 16 megs worth of modules may not be quite so happy with 145 megs of modules, so the "make modules_install" never succeeds.
This patch allows such users to request modules_install to strip the modules as they are installed.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Index: linux-2.6/Makefile =================================================================== --- linux-2.6.orig/Makefile 2006-04-28 21:16:50.000000000 -0400 +++ linux-2.6/Makefile 2006-05-21 19:01:06.000000000 -0400 @@ -518,6 +518,23 @@ MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) export MODLIB +# +# INSTALL_MOD_STRIP, if defined, will cause modules to be +# stripped after they are installed. If INSTALL_MOD_STRIP is '1', then +# the default option --strip-debug will be used. Otherwise, +# INSTALL_MOD_STRIP will used as the options to the strip command. + +ifdef INSTALL_MOD_STRIP +ifeq ($(INSTALL_MOD_STRIP),1) +mod_strip_cmd = strip --strip-debug +else +mod_strip_cmd = strip $(INSTALL_MOD_STRIP) +endif # INSTALL_MOD_STRIP=1 +else +mod_strip_cmd = true +endif # INSTALL_MOD_STRIP +export mod_strip_cmd + ifeq ($(KBUILD_EXTMOD),) core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/ Index: linux-2.6/scripts/Makefile.modinst =================================================================== --- linux-2.6.orig/scripts/Makefile.modinst 2006-03-25 21:26:41.000000000 -0500 +++ linux-2.6/scripts/Makefile.modinst 2006-05-21 19:01:06.000000000 -0400 @@ -17,7 +17,7 @@ @: quiet_cmd_modules_install = INSTALL $@ - cmd_modules_install = mkdir -p $(2); cp $@ $(2) + cmd_modules_install = mkdir -p $(2); cp $@ $(2) ; $(mod_strip_cmd) $(2)/$(notdir $@) # Modules built outside the kernel source tree go into extra by default INSTALL_MOD_DIR ?= extra Index: linux-2.6/Documentation/kbuild/makefiles.txt =================================================================== --- linux-2.6.orig/Documentation/kbuild/makefiles.txt 2006-03-25 21:26:07.000000000 -0500 +++ linux-2.6/Documentation/kbuild/makefiles.txt 2006-05-21 19:01:07.000000000 -0400 @@ -1123,6 +1123,14 @@ $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE). The user may override this value on the command line if desired. + INSTALL_MOD_STRIP + + If this variable is specified, will cause modules to be stripped + after they are installed. If INSTALL_MOD_STRIP is '1', then the + default option --strip-debug will be used. Otherwise, + INSTALL_MOD_STRIP will used as the option(s) to the strip command. + + === 8 Makefile language The kernel Makefiles are designed to run with GNU Make. The Makefiles - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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