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| author | Josh Triplett <josh@joshtriplett.org> | 2013-10-30 16:09:45 +0100 |
|---|---|---|
| committer | Josh Triplett <josh@joshtriplett.org> | 2014-08-18 00:54:00 +0200 |
| commit | 9def39be4e960917fcb80514ff23651f9ec97193 (patch) | |
| tree | fc898efcdaf87f15e70576481111291a4b8ed3ef /arch/x86/boot/Makefile | |
| parent | x86: Drop support for /proc files when !CONFIG_PROC_FS (diff) | |
| download | linux-9def39be4e960917fcb80514ff23651f9ec97193.tar.xz linux-9def39be4e960917fcb80514ff23651f9ec97193.zip | |
x86: Support compiling out human-friendly processor feature names
The table mapping CPUID bits to human-readable strings takes up a
non-trivial amount of space, and only exists to support /proc/cpuinfo
and a couple of kernel messages. Since programs depend on the format of
/proc/cpuinfo, force inclusion of the table when building with /proc
support; otherwise, support omitting that table to save space, in which
case the kernel messages will print features numerically instead.
In addition to saving 1408 bytes out of vmlinux, this also saves 1373
bytes out of the uncompressed setup code, which contributes directly to
the size of bzImage.
Signed-off-by: Josh Triplett <josh@joshtriplett.org>
Diffstat (limited to 'arch/x86/boot/Makefile')
| -rw-r--r-- | arch/x86/boot/Makefile | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/x86/boot/Makefile b/arch/x86/boot/Makefile index dbe8dd2fe247..5b016e2498f3 100644 --- a/arch/x86/boot/Makefile +++ b/arch/x86/boot/Makefile @@ -35,19 +35,22 @@ setup-y += video-vesa.o setup-y += video-bios.o targets += $(setup-y) -hostprogs-y := mkcpustr tools/build +hostprogs-y := tools/build +hostprogs-$(CONFIG_X86_FEATURE_NAMES) += mkcpustr HOST_EXTRACFLAGS += -I$(srctree)/tools/include \ -include include/generated/autoconf.h \ -D__EXPORTED_HEADERS__ +ifdef CONFIG_X86_FEATURE_NAMES $(obj)/cpu.o: $(obj)/cpustr.h quiet_cmd_cpustr = CPUSTR $@ cmd_cpustr = $(obj)/mkcpustr > $@ -targets += cpustr.h +targets += cpustr.h $(obj)/cpustr.h: $(obj)/mkcpustr FORCE $(call if_changed,cpustr) +endif # --------------------------------------------------------------------------- |