Merge tag 'tiny/for-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/josh/linux

Pull "tinification" patches from Josh Triplett.

Work on making smaller kernels.

* tag 'tiny/for-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/josh/linux:
  bloat-o-meter: Ignore syscall aliases SyS_ and compat_SyS_
  mm: Support compiling out madvise and fadvise
  x86: Support compiling out human-friendly processor feature names
  x86: Drop support for /proc files when !CONFIG_PROC_FS
  x86, boot: Don't compile early_serial_console.c when !CONFIG_EARLY_PRINTK
  x86, boot: Don't compile aslr.c when !CONFIG_RANDOMIZE_BASE
  x86, boot: Use the usual -y -n mechanism for objects in vmlinux
  x86: Add "make tinyconfig" to configure the tiniest possible kernel
  x86, platform, kconfig: move kvmconfig functionality to a helper

2 files changed, 21 insertions, 0 deletions

diff --git a/scripts/bloat-o-meter b/scripts/bloat-o-meter
index 549d0ab8c662..23e78dcd12bf 100755
--- a/scripts/bloat-o-meter
+++ b/scripts/bloat-o-meter
@@ -20,6 +20,8 @@ def getsizes(file):
         if type in "tTdDbBrR":
             # strip generated symbols
             if name.startswith("__mod_"): continue
+            if name.startswith("SyS_"): continue
+            if name.startswith("compat_SyS_"): continue
             if name == "linux_banner": continue
             # statics and some other optimizations adds random .NUMBER
             name = re.sub(r'\.[0-9]+', '', name)
diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile
index 9c4d2412fb72..ebf40f6edb4d 100644
--- a/scripts/kconfig/Makefile
+++ b/scripts/kconfig/Makefile
@@ -104,6 +104,23 @@ endif
 %_defconfig: $(obj)/conf
         $(Q)$< --defconfig=arch/$(SRCARCH)/configs/$@ $(Kconfig)
 
+configfiles=$(wildcard $(srctree)/kernel/configs/$(1).config $(srctree)/arch/$(SRCARCH)/configs/$(1).config)
+
+define mergeconfig
+$(if $(wildcard $(objtree)/.config),, $(error You need an existing .config for this target))
+$(if $(call configfiles,$(1)),, $(error No configuration exists for this target on this architecture))
+$(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh -m -O $(objtree) $(objtree)/.config $(call configfiles,$(1))
+$(Q)yes "" | $(MAKE) -f $(srctree)/Makefile oldconfig
+endef
+
+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'
@@ -124,6 +141,8 @@ help:
         @echo  '  randconfig      - New config with random answer to all options'
         @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