Richard Purdie e9f859106c oeqa/concurrenttest: Use ionice to delete build directories
Autobuilder type infrastructure can benefit from deletion of certain files as
background IO due to the way Linux filesystem priority works.

We have problems where build directories as part of oe-selftest being
delete starves the running tasks of IO to the point builds take much
longer to compelte.

Having this option of running the deletion at "idle" helps a lot with
that. Use the new option added to bb.utils.prunedir().

(From OE-Core rev: d41e7018be56902b7a1be4590e468cd15e02a3b5)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
2019-09-19 20:30:35 +01:00
2019-08-12 16:23:57 +01:00

QEMU Emulation Targets
======================

To simplify development, the build system supports building images to
work with the QEMU emulator in system emulation mode. Several architectures
are currently supported in 32 and 64 bit variants:

  * ARM (qemuarm + qemuarm64)
  * x86 (qemux86 + qemux86-64)
  * PowerPC (qemuppc only)
  * MIPS (qemumips + qemumips64)

Use of the QEMU images is covered in the Yocto Project Reference Manual.
The appropriate MACHINE variable value corresponding to the target is given
in brackets.
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