Arnd Bergmann d21832e212 kbuild: speed up checksyscalls.sh ... checksyscalls.sh is run at every "make" run while building the kernel, even if no files have changed. I looked at where we spend time in a trivial empty rebuild and found checksyscalls.sh to be a source of noticeable overhead, as it spawns a lot of child processes just to call 'cat' copying from stdin to stdout, once for each of the over 400 x86 syscalls. Using a shell-builtin (echo) instead of the external command gives us a 13x speedup: Before After real 0m1.018s real 0m0.077s user 0m0.068s user 0m0.048s sys 0m0.156s sys 0m0.024s The time it took to rebuild a single file on my machine dropped from 5.5 seconds to 4.5 seconds. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>		2017-06-10 01:15:36 +09:00
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basic	…
coccinelle	drm: Introduce drm_property_blob_{get,put}()	2017-02-28 16:16:46 +01:00
dtc	DeviceTree fixes for 4.12-rc:	2017-05-19 15:03:24 -07:00
gcc-plugins	Fixes a typo in sancov plugin, exposed in earlier compiler versions	2017-03-09 18:05:41 -08:00
gdb	…
genksyms	Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild	2017-03-11 01:18:25 +09:00
kconfig	gconfig: remove misleading parentheses around a condition	2017-03-22 02:56:33 +09:00
ksymoops	Fix dead URLs to ftp.kernel.org	2017-03-28 16:16:52 +02:00
mod	kbuild: Consolidate header generation from ASM offset information	2017-04-13 05:43:37 +09:00
package	Kbuild misc updates for 4.12	2017-05-10 20:41:43 -07:00
selinux	selinux: include sys/socket.h in host programs to have PF_MAX	2017-03-10 15:09:27 -05:00
tracing	…
.gitignore	…
Kbuild.include	Kbuild updates for v4.12	2017-05-10 20:11:05 -07:00
Lindent	scripts/Lindent: clean up and optimize	2017-02-22 16:41:26 -08:00
Makefile	…
Makefile.asm-generic	kbuild: Remove stale asm-generic wrappers	2016-07-07 15:58:45 +02:00
Makefile.build	objtool: make it visible in make V=1 output	2017-05-03 13:39:37 +09:00
Makefile.clean	…
Makefile.dtbinst	kbuild: dtbinst: remove unnecessary __dtbs_install_prep target	2017-05-08 07:26:06 +09:00
Makefile.extrawarn	kbuild: drop -Wno-unknown-warning-option from clang options	2017-04-23 16:09:15 +09:00
Makefile.fwinst	…
Makefile.gcc-plugins	powerpc updates for 4.11 part 1.	2017-02-22 10:30:38 -08:00
Makefile.headersinst	kbuild: skip install/check of headers right under uapi directories	2017-05-18 02:17:45 +09:00
Makefile.help	…
Makefile.host	…
Makefile.kasan	kasan: turn on -fsanitize-address-use-after-scope	2016-12-12 18:55:09 -08:00
Makefile.lib	devicetree: Move include prefixes from arch to separate directory	2017-05-18 23:55:48 -07:00
Makefile.modbuiltin	…
Makefile.modinst	…
Makefile.modpost	…
Makefile.modsign	…
Makefile.ubsan	Kbuild: enable -Wmaybe-uninitialized warning for "make W=1"	2016-11-11 08:45:08 -08:00
adjust_autoksyms.sh	kbuild: fix scripts/adjust_autoksyms.sh* for the no modules case	2016-12-11 22:30:10 +01:00
asn1_compiler.c	…
bloat-o-meter	scripts/bloat-o-meter: compile .NUMBER regex	2016-12-12 18:55:06 -08:00
bootgraph.pl	…
check-lc_ctype.c	…
check_00index.sh	scripts: add a script to check if Documentation/00-INDEX is sane	2016-12-05 14:21:24 -07:00
check_extable.sh	…
checkincludes.pl	scripts/checkincludes.pl: add exit message for no duplicates found	2017-02-22 16:41:26 -08:00
checkkconfigsymbols.py	checkkconfigsymbols.py: support Kconfig's 'imply' statement	2017-02-03 11:49:06 +01:00
checkpatch.pl	checkpatch: improve the SUSPECT_CODE_INDENT test	2017-05-08 17:15:11 -07:00
checkstack.pl	scripts: remove AVR32 support from checkstack.pl	2017-05-01 09:27:15 +02:00
checksyscalls.sh	kbuild: speed up checksyscalls.sh	2017-06-10 01:15:36 +09:00
checkversion.pl	…
cleanfile	…
cleanpatch	…
coccicheck	…
config	…
conmakehash.c	…
const_structs.checkpatch	…
decode_stacktrace.sh	scripts/decode_stacktrace.sh: Fix address line detection on x86	2016-11-29 14:19:50 +01:00
decodecode	…
depmod.sh	…
diffconfig	…
docproc.c	…
export_report.pl	…
extract-cert.c	…
extract-ikconfig	…
extract-module-sig.pl	…
extract-sys-certs.pl	…
extract-vmlinux	…
extract_xc3028.pl	…
faddr2line	…
gcc-goto.sh	…
gcc-ld	…
gcc-plugin.sh	…
gcc-version.sh	…
gcc-x86_32-has-stack-protector.sh	…
gcc-x86_64-has-stack-protector.sh	scripts/has-stack-protector: add -fno-PIE	2016-11-09 22:28:05 +01:00
gen_initramfs_list.sh	…
get_dvb_firmware	…
get_maintainer.pl	get_maintainer: look for arbitrary letter prefixes in sections	2016-12-12 18:55:09 -08:00
gfp-translate	…
headerdep.pl	…
headers.sh	…
headers_check.pl	…
headers_install.sh	…
insert-sys-cert.c	…
kallsyms.c	kbuild: modversions: add infrastructure for emitting relative CRCs	2017-02-03 08:28:25 -08:00
kernel-doc	scripts/kernel-doc: fix handling of parameters with parenthesis	2017-04-02 14:06:56 -06:00
kernel-doc-xml-ref	…
ld-version.sh	…
link-vmlinux.sh	kbuild: minor improvement for thin archives build	2016-11-29 15:58:57 +01:00
makelst	…
markup_oops.pl	…
mkcompile_h	…
mkmakefile	…
mksysmap	…
mkuboot.sh	…
mkversion	…
module-common.lds	module: set .init_array alignment to 8	2017-03-13 09:40:28 -07:00
namespace.pl	…
objdiff	scripts: objdiff: Ignore debug info when comparing	2017-03-11 11:13:38 +09:00
patch-kernel	…
pnmtologo.c	…
profile2linkerlist.pl	…
prune-kernel	…
recordmcount.c	ftrace: Allow for function tracing to record init functions on boot up	2017-03-24 20:51:49 -04:00
recordmcount.h	…
recordmcount.pl	ftrace: Allow for function tracing to record init functions on boot up	2017-03-24 20:51:49 -04:00
setlocalversion	…
show_delta	…
sign-file.c	sign-file: fix build error in sign-file.c with libressl	2017-02-10 12:43:47 +11:00
sortextable.c	powerpc: Build-time sort the exception table	2016-11-14 11:11:51 +11:00
sortextable.h	…
spelling.txt	treewide: spelling: correct diffrent[iate] and banlance typos	2017-05-08 17:15:13 -07:00
stackdelta	…
stackusage	…
tags.sh	scripts/tags.sh: include arch/Kconfig* for tags generation	2017-02-22 16:41:26 -08:00
unifdef.c	…
ver_linux	ver_linux: Use /usr/bin/awk instead of /bin/awk	2017-04-08 18:03:42 +02:00
xen-hypercalls.sh	…
xz_wrap.sh	…