# udev rules specific to RHEL-RT Realtime kernel

# insure /dev/rtc points to /dev/rtc0

# we use PROGRAM rather than SYMLINK because there is

# a (good) possiblity that a /dev/rtc device file

# already exists and we want to replace it (hence the

# ln -sf)

KERNEL=="rtc0", PROGRAM+="/bin/ln -sf rtc0 /dev/rtc"

# Give permission to the realtime group to write a zero to /dev/cpu_dma_latency

# This will tell the power management system not to tranistion to a high cstate

KERNEL=="cpu_dma_latency", GROUP="realtime"