Star64_linux/scripts
Masahiro Yamada d7059ca014 coccinelle: fix parallel build with CHECK=scripts/coccicheck
The command "make -j8 C=1 CHECK=scripts/coccicheck" produces
lots of "coccicheck failed" error messages.

Julia Lawall explained the Coccinelle behavior as follows:
"The problem on the Coccinelle side is that it uses a subdirectory
with the name of the semantic patch to store standard output and
standard error for the different threads.  I didn't want to use a
name with the pid, so that one could easily find this information
while Coccinelle is running.  Normally the subdirectory is cleaned
up when Coccinelle completes, so there is only one of them at a time.
Maybe it is best to just add the pid.  There is the risk that these
subdirectories will accumulate if Coccinelle crashes in a way such
that they don't get cleaned up, but Coccinelle could print a warning
if it detects this case, rather than failing."

When scripts/coccicheck is used as CHECK tool and -j option is given
to Make, the whole of build process runs in parallel.  So, multiple
processes try to get access to the same subdirectory.

I notice spatch creates the subdirectory only when it runs in parallel
(i.e. --jobs <N> is given and <N> is greater than 1).

Setting NPROC=1 is a reasonable solution; spatch does not create the
subdirectory.  Besides, ONLINE=1 mode takes a single file input for
each spatch invocation, so there is no reason to parallelize it in
the first place.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Julia Lawall <Julia.Lawall@lip6.fr>
2017-11-23 23:12:03 +09:00
..
basic
coccinelle Kbuild misc updates for v4.15 2017-11-17 17:51:33 -08:00
dtc
gcc-plugins
gdb
genksyms
kconfig kconfig/symbol.c: use correct pointer type argument for sizeof 2017-11-23 23:12:02 +09:00
ksymoops
mod
package Kbuild misc updates for v4.15 2017-11-17 17:51:33 -08:00
selinux Kbuild updates for v4.15 2017-11-17 17:45:29 -08:00
tracing
.gitignore
adjust_autoksyms.sh
asn1_compiler.c
bloat-o-meter bloat-o-meter: provide 3 different arguments for data, function and All 2017-11-15 18:21:00 -08:00
bootgraph.pl
check_00index.sh
check_extable.sh
checkincludes.pl
checkkconfigsymbols.py
checkpatch.pl checkpatch: do not check missing blank line before builtin_*_driver 2017-11-17 16:10:02 -08:00
checkstack.pl
checksyscalls.sh
checkversion.pl
cleanfile
cleanpatch
coccicheck coccinelle: fix parallel build with CHECK=scripts/coccicheck 2017-11-23 23:12:03 +09:00
config
conmakehash.c
const_structs.checkpatch
decode_stacktrace.sh
decodecode
depmod.sh
diffconfig
documentation-file-ref-check
export_report.pl
extract-cert.c
extract-ikconfig
extract-module-sig.pl
extract-sys-certs.pl
extract-vmlinux
extract_xc3028.pl
faddr2line
find-unused-docs.sh
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
gen_initramfs_list.sh
get_dvb_firmware
get_maintainer.pl get_maintainer: add more --self-test options 2017-11-17 16:10:01 -08:00
gfp-translate
headerdep.pl
headers.sh
headers_check.pl
headers_install.sh
insert-sys-cert.c
kallsyms.c
Kbuild.include kbuild: create directory for make cache only when necessary 2017-11-16 09:07:32 +09:00
kernel-doc kmemcheck: rip it out 2017-11-15 18:21:05 -08:00
ld-version.sh
leaking_addresses.pl
Lindent
link-vmlinux.sh Kbuild updates for v4.15 2017-11-17 17:45:29 -08:00
Makefile
Makefile.asm-generic Kbuild updates for v4.15 2017-11-17 17:45:29 -08:00
Makefile.build kbuild: create built-in.o automatically if parent directory wants it 2017-11-18 11:38:58 +09:00
Makefile.clean
Makefile.dtbinst
Makefile.extrawarn
Makefile.gcc-plugins
Makefile.headersinst Kbuild updates for v4.15 2017-11-17 17:45:29 -08:00
Makefile.host Kbuild updates for v4.15 2017-11-17 17:45:29 -08:00
Makefile.kasan
Makefile.kcov Makefile: support flag -fsanitizer-coverage=trace-cmp 2017-11-17 16:10:04 -08:00
Makefile.lib Kbuild updates for v4.15 2017-11-17 17:45:29 -08:00
Makefile.modbuiltin
Makefile.modinst
Makefile.modpost Kbuild updates for v4.15 2017-11-17 17:45:29 -08:00
Makefile.modsign
Makefile.ubsan
makelst
markup_oops.pl
mkcompile_h Kbuild updates for v4.15 2017-11-17 17:45:29 -08:00
mkmakefile
mksysmap
mkuboot.sh
module-common.lds
namespace.pl
objdiff
parse-maintainers.pl parse-maintainers: add ability to specify filenames 2017-11-17 16:10:01 -08:00
patch-kernel
pnmtologo.c
profile2linkerlist.pl
prune-kernel
recordmcount.c
recordmcount.h
recordmcount.pl
setlocalversion
show_delta
sign-file.c
sortextable.c
sortextable.h
spelling.txt spelling.txt: add "unnecessary" typo variants 2017-11-17 16:10:00 -08:00
sphinx-pre-install
stackdelta
stackusage
tags.sh
unifdef.c
ver_linux
xen-hypercalls.sh
xz_wrap.sh