for your amusement i present the following diff, which slightly
reorders the include search path for a kernel. this doesn't change
anything, except to spare us some lookups for files that don't exist.
ktrace results, before and after, namei calls:
304420 1217680 14560939 k2
266626 1066504 13448913 k3
(there are of course, several other archictures as well)
Index: Makefile.i386
===================================================================
RCS file: /cvs/src/sys/arch/i386/conf/Makefile.i386,v
retrieving revision 1.85
diff -u -p -r1.85 Makefile.i386
--- Makefile.i386 28 Aug 2012 21:03:32 -0000 1.85
+++ Makefile.i386 29 Mar 2013 19:23:40 -0000
@@ -21,7 +21,7 @@ S!= cd ../../../..; pwd
_machdir?= $S/arch/${_mach}
_archdir?= $S/arch/${_arch}
-INCLUDES= -nostdinc -I. -I$S -I$S/arch
+INCLUDES= -nostdinc -I$S -I. -I$S/arch
CPPFLAGS= ${INCLUDES} ${IDENT} ${PARAM} -D_KERNEL -MD -MP
CWARNFLAGS= -Werror -Wall -Wstrict-prototypes -Wmissing-prototypes \
-Wno-main -Wno-uninitialized -Wno-format \
