docs:

• https://www.kernel.org/doc/Documentation/timers/NO_HZ.txt

§ TIMER INTERRUPT FREQUENCY

$zcat /proc/config.gz | grep "HZ"

CONFIG_NO_HZ_COMMON=y
# CONFIG_HZ_PERIODIC is not set
# CONFIG_NO_HZ_IDLE is not set
CONFIG_NO_HZ_FULL=y
CONFIG_NO_HZ=y
# CONFIG_HZ_100 is not set
# CONFIG_HZ_250 is not set
CONFIG_HZ_300=y
# CONFIG_HZ_1000 is not set
CONFIG_HZ=300
CONFIG_MACHZ_WDT=m