idr_alloc_cyclic (9) - Linux Manuals

idr_alloc_cyclic: allocate new idr entry in a cyclical fashion

Command to display idr_alloc_cyclic manual in Linux: $ man 9 idr_alloc_cyclic

NAME

idr_alloc_cyclic - allocate new idr entry in a cyclical fashion

SYNOPSIS

int idr_alloc_cyclic(struct idr * idr, void * ptr, int start, int end, gfp_t gfp_mask);

ARGUMENTS

idr

: the (initialized) idr

ptr

: pointer to be associated with the new id

start

: the minimum id (inclusive)

end

: the maximum id (exclusive, <= 0 for max)

gfp_mask

: memory allocation flags

DESCRIPTION

Essentially the same as idr_alloc, but prefers to allocate progressively higher ids if it can. If the "cur" counter wraps, then it will start again at the "start" end of the range and allocate one that has already been used.