From b332766553a4adc1516518ce083fa64456fc2c01 Mon Sep 17 00:00:00 2001 From: Rasmus Villemoes Date: Fri, 6 Jul 2018 09:48:36 +0200 Subject: perf: disable parallelism for 'make clean' Whenever perf got rebuilt, I was consistently getting 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 breaking the whole build. The root cause seems to be that the implicit 'make clean' done during do_configure ends up running in parallel, and thus multiple find commands attempt to stat and/or delete the same file. A patch disabling parallelism for the clean target has been ack'ed upstream (lkml.kernel.org/r/20180705134955.GB3686@krava), but it should be harmless to pass JOBS=1 even with a fixed kernel. This can be removed if and when all relevant -stable kernels have that patch. (From OE-Core rev: bb58203b668df42fd08c2e5fa4a172cf63e37369) (From OE-Core rev: d12722681a4c13c1a6bc9c965cc43c4544ce7aa9) (From OE-Core rev: ad21736cf1be017af4b211b5cdd577cdf28dee20) Signed-off-by: Rasmus Villemoes Signed-off-by: Ross Burton Signed-off-by: Richard Purdie Signed-off-by: Armin Kuster Signed-off-by: Richard Purdie Signed-off-by: Armin Kuster Signed-off-by: Richard Purdie --- meta/recipes-kernel/perf/perf.bb | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/meta/recipes-kernel/perf/perf.bb b/meta/recipes-kernel/perf/perf.bb index 92e7d96504..6fd23d63e3 100644 --- a/meta/recipes-kernel/perf/perf.bb +++ b/meta/recipes-kernel/perf/perf.bb @@ -95,6 +95,13 @@ EXTRA_OEMAKE += "\ 'infodir=${@os.path.relpath(infodir, prefix)}' \ " +# During do_configure, we might run a 'make clean'. That often breaks +# when done in parallel, so disable parallelism for do_configure. Note +# that it has to be done this way rather than by passing -j1, since +# perf's build system by default ignores any -j argument, but does +# honour a JOBS variable. +EXTRA_OEMAKE_append_task-configure = " JOBS=1" + PERF_SRC ?= "Makefile \ include \ tools/arch \ -- cgit v1.2.3-54-g00ecf