CONFIG_HAVE_ARCH_HASH (not configurable)
configname: CONFIG_HAVE_ARCH_HASH
Linux Kernel Configuration
└─>HAVE_ARCH_HASH
In linux kernel since version 3.10 (release Date: 2013-06-30)
If this is set, the architecture provides an <asm/hash.h>
file which provides platform-specific implementations of some
functions in <linux/hash.h> or fs/namei.c.
file which provides platform-specific implementations of some
functions in <linux/hash.h> or fs/namei.c.