Provided by:
freebsd-manpages_8.2-1_all 
NAME
device_get_sysctl_ctx, device_get_sysctl_tree -- manipulate the sysctl
oid tree for driver specific sysctl nodes
SYNOPSIS
#include <sys/param.h>
#include <sys/bus.h>
struct sysctl_ctx_list *
device_get_sysctl_ctx(device_t dev);
struct sysctl_oid *
device_get_sysctl_tree(device_t dev);
DESCRIPTION
The newbus system automatically adds a sysctl node for each device in the
system. This node can be accessed with the device_get_sysctl_tree()
function. The context for the node can be obtained with the
device_get_sysctl_ctl() function.
SEE ALSO
device(9)
AUTHORS
This manual page was written by Warner Losh.