ia64/linux-2.6.18-xen.hg

view Kbuild @ 893:f994bfe9b93b

linux/blktap2: reduce TLB flush scope

c/s 885 added very coarse TLB flushing. Since these flushes always
follow single page updates, single page flushes (when available) are
sufficient.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
author Keir Fraser <keir.fraser@citrix.com>
date Thu Jun 04 10:32:57 2009 +0100 (2009-06-04)
parents 831230e53067
children
line source
1 #
2 # Kbuild for top-level directory of the kernel
3 # This file takes care of the following:
4 # 1) Generate asm-offsets.h
6 #####
7 # 1) Generate asm-offsets.h
8 #
10 offsets-file := include/asm-$(ARCH)/asm-offsets.h
12 always := $(offsets-file)
13 targets := $(offsets-file)
14 targets += arch/$(ARCH)/kernel/asm-offsets.s
16 # Default sed regexp - multiline due to syntax constraints
17 define sed-y
18 "/^->/{s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; s:->::; p;}"
19 endef
20 # Override default regexp for specific architectures
21 sed-$(CONFIG_MIPS) := "/^@@@/{s/^@@@//; s/ \#.*\$$//; p;}"
23 quiet_cmd_offsets = GEN $@
24 define cmd_offsets
25 (set -e; \
26 echo "#ifndef __ASM_OFFSETS_H__"; \
27 echo "#define __ASM_OFFSETS_H__"; \
28 echo "/*"; \
29 echo " * DO NOT MODIFY."; \
30 echo " *"; \
31 echo " * This file was generated by $(srctree)/Kbuild"; \
32 echo " *"; \
33 echo " */"; \
34 echo ""; \
35 sed -ne $(sed-y) $<; \
36 echo ""; \
37 echo "#endif" ) > $@
38 endef
40 # We use internal kbuild rules to avoid the "is up to date" message from make
41 arch/$(ARCH)/kernel/asm-offsets.s: arch/$(ARCH)/kernel/asm-offsets.c FORCE
42 $(Q)mkdir -p $(dir $@)
43 $(call if_changed_dep,cc_s_c)
45 $(obj)/$(offsets-file): arch/$(ARCH)/kernel/asm-offsets.s Kbuild
46 $(Q)mkdir -p $(dir $@)
47 $(call cmd,offsets)