4.18-stable review patch. If anyone has any objections, please let me know.
------------------ [ Upstream commit da15fc2fa9c07b23db8f5e479bd8a9f0d741ca07 ] The Yocto build system does a 'make clean' when rebuilding due to changed dependencies, and that consistently fails for me (causing the whole BSP build to fail) with errors such as | find: '[...]/perf/1.0-r9/perf-1.0/plugin_mac80211.so': No such file or directory | find: '[...]/perf/1.0-r9/perf-1.0/plugin_mac80211.so': No such file or directory | find: find: '[...]/perf/1.0-r9/perf-1.0/libtraceevent.a''[...]/perf/1.0-r9/perf-1.0/libtraceevent.a': No such file or directory: No such file or directory | [...] | find: cannot delete '/mnt/xfs/devel/pil/yocto/tmp-glibc/work/wandboard-oe-linux-gnueabi/perf/1.0-r9/perf-1.0/util/.pstack.o.cmd': No such file or directory Apparently (despite the comment), 'make clean' ends up launching multiple sub-makes that all want to remove the same things - perhaps this only happens in combination with a O=... parameter. In any case, we don't lose much by explicitly disabling the parallelism for the clean target, and it makes automated builds much more reliable. Signed-off-by: Rasmus Villemoes <[email protected]> Acked-by: Jiri Olsa <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> Signed-off-by: Sasha Levin <[email protected]> --- tools/perf/Makefile | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/tools/perf/Makefile +++ b/tools/perf/Makefile @@ -84,10 +84,10 @@ endif # has_clean endif # MAKECMDGOALS # -# The clean target is not really parallel, don't print the jobs info: +# Explicitly disable parallelism for the clean target. # clean: - $(make) + $(make) -j1 # # The build-test target is not really parallel, don't print the jobs info,
