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authorJosh Triplett <josh@joshtriplett.org>2014-08-08 16:25:47 -0700
committerJosh Triplett <josh@joshtriplett.org>2014-08-08 16:30:24 -0700
commit0da1d4a0b9516adb2acc4841e9f6da6618f47f4e (patch)
tree7542ef60dd821bf6aba92a5e747b7e0980f25504 /scripts
parent3aaefce10351fecab348f5e06857f44cafc61a62 (diff)
downloadlinux-0da1d4a0b9516adb2acc4841e9f6da6618f47f4e.tar.gz
x86: Add "make tinyconfig" to configure the tiniest possible kernel
Since commit 5d2acfc7b974bbd3858b4dd3f2cdc6362dd8843a ("kconfig: make allnoconfig disable options behind EMBEDDED and EXPERT") in 3.15-rc1, "make allnoconfig" disables every possible config option. However, a few configuration options (CC_OPTIMIZE_FOR_SIZE, OPTIMIZE_INLINING) produce a smaller kernel when turned on, and a few choices exist (compression, highmem, allocator) for which a non-default option produces a smaller kernel. Add a "tinyconfig" option, which starts from allnoconfig and then sets these options to configure the tiniest possible kernel. This provides a better baseline for embedded systems or efforts to reduce kernel size. Signed-off-by: Josh Triplett <josh@joshtriplett.org>
Diffstat (limited to 'scripts')
-rw-r--r--scripts/kconfig/Makefile5
1 files changed, 5 insertions, 0 deletions
diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile
index 8083b94b45ee..ebf40f6edb4d 100644
--- a/scripts/kconfig/Makefile
+++ b/scripts/kconfig/Makefile
@@ -117,6 +117,10 @@ PHONY += kvmconfig
kvmconfig:
$(call mergeconfig,kvm_guest)
+PHONY += tinyconfig
+tinyconfig: allnoconfig
+ $(call mergeconfig,tiny)
+
# Help text used by make help
help:
@echo ' config - Update current config utilising a line-oriented program'
@@ -138,6 +142,7 @@ help:
@echo ' listnewconfig - List new options'
@echo ' olddefconfig - Same as silentoldconfig but sets new symbols to their default value'
@echo ' kvmconfig - Enable additional options for guest kernel support'
+ @echo ' tinyconfig - Configure the tiniest possible kernel'
# lxdialog stuff
check-lxdialog := $(srctree)/$(src)/lxdialog/check-lxdialog.sh