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b51364db48
We have bb.debug(2, xxx) messages in cooker which are useful for debugging but have really bad effects on performance, 640,000 calls on recent profile graphs taking tens of seconds. Rather than commenting out debug which can be useful for debugging, don't create events for debug log messages from cooker which would never be seen. We already stop the messages hitting the IPC but this avoids the overhead of creating the log messages too, which has been shown to be signficiant on the profiles. This allows the code to perform whilst allowing debug messages to be availble when wanted/enabled. (Bitbake rev: f224201b5003b89367d688b1f08a062754fce13a) Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org> (cherry picked from commit f04cd931091fb0508badf3e002d70a6952700495) Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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.