diff options
| author |   Alexander Kanavin <alex.kanavin@gmail.com> | 2021-05-07 22:16:07 +0200 |
|---|---|---|
| committer |   Richard Purdie <richard.purdie@linuxfoundation.org> | 2021-05-13 18:09:03 +0100 |
| commit | 56f98d12a79585a4d4c459160f39403e05b620a5 (patch) | |
| tree | 59a7f615256647b20129813278ba302d75b1564a | |
| parent | d10b62f54c6e0f19af02bab024680462d9e4418a (diff) | |
| download | openembedded-core-56f98d12a79585a4d4c459160f39403e05b620a5.tar.gz | |
qemu: use 4 cores in qemu guests
Each of the cores is mapped to a thread on the host, this
should speed up things inside qemu which can take advantage of that.
Signed-off-by: Alexander Kanavin <alex.kanavin@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
| -rw-r--r-- | meta/classes/qemuboot.bbclass | 4 | ||||
| -rwxr-xr-x | scripts/runqemu | 4 |
2 files changed, 6 insertions, 2 deletions
diff --git a/meta/classes/qemuboot.bbclass b/meta/classes/qemuboot.bbclass index 1f8012edc1..0fdd10099c 100644 --- a/meta/classes/qemuboot.bbclass +++ b/meta/classes/qemuboot.bbclass @@ -19,6 +19,9 @@ # QB_CPU_KVM: the similar to QB_CPU, but used when kvm, e.g., '-cpu kvm64', # set it when support kvm. # +# QB_SMP: amount of CPU cores inside qemu guest, each mapped to a thread on the host, +# e.g. "-smp 8". +# # QB_KERNEL_CMDLINE_APPEND: options to append to kernel's -append # option, e.g., "console=ttyS0 console=tty" # @@ -80,6 +83,7 @@ # See "runqemu help" for more info QB_MEM ?= "-m 256" +QB_SMP ?= "-smp 4" QB_SERIAL_OPT ?= "-serial mon:stdio -serial null" QB_DEFAULT_KERNEL ?= "${KERNEL_IMAGETYPE}" QB_DEFAULT_FSTYPE ?= "ext4" diff --git a/scripts/runqemu b/scripts/runqemu index edd17d09c4..e2dc529baa 100755 --- a/scripts/runqemu +++ b/scripts/runqemu @@ -540,13 +540,13 @@ class BaseConfig(object): def check_kvm(self): """Check kvm and kvm-host""" if not (self.kvm_enabled or self.vhost_enabled): - self.qemu_opt_script += ' %s %s' % (self.get('QB_MACHINE'), self.get('QB_CPU')) + self.qemu_opt_script += ' %s %s %s' % (self.get('QB_MACHINE'), self.get('QB_CPU'), self.get('QB_SMP')) return if not self.get('QB_CPU_KVM'): raise RunQemuError("QB_CPU_KVM is NULL, this board doesn't support kvm") - self.qemu_opt_script += ' %s %s' % (self.get('QB_MACHINE'), self.get('QB_CPU_KVM')) + self.qemu_opt_script += ' %s %s %s' % (self.get('QB_MACHINE'), self.get('QB_CPU_KVM'), self.get('QB_SMP')) yocto_kvm_wiki = "https://wiki.yoctoproject.org/wiki/How_to_enable_KVM_for_Poky_qemu" yocto_paravirt_kvm_wiki = "https://wiki.yoctoproject.org/wiki/Running_an_x86_Yocto_Linux_image_under_QEMU_KVM" dev_kvm = '/dev/kvm' |