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[ CQID: WIND00391769 ] Huge latencies reported close to 1 second when certain options are used in cyclictest. Extend the original commit to remove the 1 second hardcoded timer values from the RELTIME and ITIMER options. Use the the actual interval instead. (From OE-Core rev: d1a3f3e2a6a74ba9b7ad5554648faebaf1b73c9f) Signed-off-by: Jim Somerville <Jim.Somerville@windriver.com> Signed-off-by: Robert Yang <liezhi.yang@windriver.com> Signed-off-by: Mark Hatle <mark.hatle@windriver.com> Signed-off-by: Saul Wold <sgw@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
The recipes-rt recipes provide package and image recipes for using and testing the PREEMPT_RT kernel. The core-image-rt*.bb images are minimal images with a couple extra packages, including rt-tests. In order to build the image with the linux-yocto-rt kernel, be sure to include the following line in your local.conf, bblayers.conf, or your $MACHINE.conf.
PREFERRED_PROVIDER_virtual/kernel = "linux-yocto-rt"
If you are creating a new BSP which should use linux-yocto-rt by default, use the line above in the $MACHINE.conf in your BSP layer, and specify the following in a linux-yocto-rt bbappend recipe:
COMPATIBLE_MACHINE_$MACHINE = $MACHINE