openembedded-core.git/meta/recipes-kernel/perf, branch thud

perf: Disable libunwind for ARC & RISCV64

2018-11-06T12:15:59+00:00

libunwind is not yet ported for ARC & RISCV64 and on attempt
to build it for those arches we just get an error message.

If we explicitly disable libunwind it is gracefully handled by
perf build system and it just gets configured to not use it
so perf is still usable even on those arches.

Signed-off-by: Alexey Brodkin 
Cc: Khem Raj 
Signed-off-by: Ross Burton 
Signed-off-by: Richard Purdie

perf: fix do_compile failure with /tmp mounted with noexec

2018-10-20T21:39:25+00:00

On a builder which has /tmp mounted nexec, the ARM64 generation of
the sycall table will fail:
[snip]
|perf-1.0/tools/perf/arch/arm64/entry/syscalls//mksyscalltbl:
/tmp/create-table-6VGPSt: Permission denied
[snip]

To avoid the permission denied error, we must instruct the perf build
to place temporary files in an appropriate directory (versus always
using /tmp). To do this, we need both a kernel source change to perf,
and a recipe change to pass the temp directory in by a TMPDIR variable.

The linux-yocto has a reference kernel change: [perf arm64: Fix generate
system call table failed with /tmp mounted with noexec], that has also
been submitted upstream mailing list linux-perf-users@vger.kernel.org

Signed-off-by: Hongxu Jia 
Reviewed-by: Bruce Ashfield 
Signed-off-by: Richard Purdie

perf: make tools needed for API documentation respect the manpages PACKAGECONFIG

2018-10-10T11:42:40+00:00

Signed-off-by: Ross Burton 
Signed-off-by: Richard Purdie

perf: do not pull in any perl dependencies unless scripting is requested

2018-09-13T15:28:26+00:00

Signed-off-by: Dima Zavin 
Signed-off-by: Andrew Bresticker 
Signed-off-by: Richard Purdie

perf: fail if src path does not exist

2018-08-14T10:36:22+00:00

A missing src directory from a broken kernel recipe resulted
only in a warning:

WARNING: copyfile: stat of /home/builder/src/tmp-glibc/work-shared/target/kernel-source/tools/arch failed ([Errno 2] No such file or directory: '/home/builder/src/tmp-glibc/work-shared/target/kernel-source/tools/arch')

and the build failed horribly.

With this change it's an error which can not be missed:

ERROR: perf-1.0-r9 do_configure: Path does not exist: /home/builder/src/tmp-glibc/work-shared/target/kernel-source/tools/arch. Maybe PERF_SRC does not match the kernel version.
ERROR: perf-1.0-r9 do_configure: Function failed: copy_perf_source_from_kernel
ERROR: Logfile of failure stored in: /home/builder/src/tmp-glibc/work/target-linux/perf/1.0-r9/temp/log.do_configure.21083
NOTE: recipe perf-1.0-r9: task do_configure: Failed
ERROR: Task (/home/builder/src/poky/meta/recipes-kernel/perf/perf.bb:do_configure) failed with exit code '1'

To get get perf compiling from a custom kernel, a perf.bbappend can be
created which defines PERF_SRC as list of files and directories needed
from kernel source tree to compile perf. This varies between kernel
versions.

Signed-off-by: Mikko Rapeli 
Signed-off-by: Richard Purdie

perf: inherit manpages instead of adding man to RDEPENDS_${PN}-doc

2018-08-14T10:36:22+00:00

Signed-off-by: Martin Jansa 
Signed-off-by: Richard Purdie

perf: add dwarf to PACKAGECONFIG

2018-07-13T15:32:38+00:00

Enable perf to be built with DWARF support.

Fixes [YOCTO #3359]

Signed-off-by: Anuj Mittal 
Signed-off-by: Ross Burton

perf: disable parallelism for 'make clean'

2018-07-13T15:32:38+00:00

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.

Signed-off-by: Rasmus Villemoes 
Signed-off-by: Ross Burton

perf: fix build with kernel older than 4.8

2018-05-29T20:06:02+00:00

* perf is failing to build for me since this oe-core commit:
  commit 9b38c824961fc9dce51bda95c25dac91a69fc64f
  Author: Hongxu Jia 
  Date:   Tue Apr 24 11:33:47 2018 +0800

    perf: make a copy of kernel source to perf workdir

  the problem is that perf sources in kernel older than 4.8 (in my case
  4.4) are depending on the "global" include headers outside tools
  directory, e.g. swab.h in:
  kernel-source/tools$ git grep swab.h
  perf/MANIFEST:include/linux/swab.h
  perf/MANIFEST:include/uapi/linux/swab.h
  perf/util/include/asm/byteorder.h:#include "../../../../include/uapi/linux/swab.h"

  this was resolved in 4.8 with:
  commit 7e3f36411342a54f1981fa97b43550b8406a3d69
  Author: Arnaldo Carvalho de Melo 
  Date:   Mon Jul 18 17:42:16 2016 -0300

    perf tools: Remove tools/perf/util/include/asm/byteorder.h

    Not used anymore. This also stops include linux/swab.h directly
    from the kernel sources, remove that reference from the MANIFEST.

  and few more changes to make tools/include more complete and standalone:
  tools/include in 4.15:
  asm  asm-generic  linux  tools  trace  uapi

  tools/include in 4.4:
  asm  asm-generic  linux  tools

  but copying the include header even for kernels which don't really
  need it doesn't add big overhead, so just copy include to perf sources
  for all kernels.

Signed-off-by: Martin Jansa 
Signed-off-by: Ross Burton

perf: make a copy of kernel source to perf workdir

2018-05-04T08:54:59+00:00

Since perf contaminates linux shared workdir, it probably caused
kernel-devsrc compile failure at world build.
...
|0 blocks
|cpio: ./tools/perf/arch/arm/util/sedr7ORqk: Cannot stat:
No such file or directory
|0 blocks
...
cpio tried to find a file at ${S}/tools/perf and failed
if the input list is not valid.

Make a copy of kernel shared source directory into a perf workdir
could fix the issue.

Drop `Fix for rebuilding' which is obsolete

[YOCTO #10880]

Signed-off-by: Hongxu Jia 
Signed-off-by: Ross Burton