VMEM_WALK(9F) Kernel Functions for Drivers VMEM_WALK(9F)

NAME

vmem_walk, vmem_size - walk a (sub-)set of the segments in a vmem arena

SYNOPSIS

#include <sys/vmem.h>

void
vmem_walk(vmem_t *vmp, int typemask,
void (*func)(void *, void *, size_t), void *arg);

size_t
vmem_size(vmem_t *vmp, int typemask);

INTERFACE LEVEL

illumos DDI specific

PARAMETERS

vmp The vmem arena to walk.

typemask
A bitmask indicating the types of segment to operate on.

VMEM_ALLOC
Allocated segments.

VMEM_FREE
Free segments.

func The function to apply to each segment matching typemask. func
should accept 3 arguments and return void:

void *arg
The arg passed to vmem_walk().

void *vaddr
The base address of the segment.

size_t size
The size of the segment.

arg An arbitrary argument passed to each call to func().

DESCRIPTION

vmem_walk() walks each segment in the arena vmp and applies func to
each which matches typemask.

vmem_size() walks each segment in the arena vmp and totals the size of
each matching typemask.

CONTEXT

This function may be called from user or kernel context.

SEE ALSO

vmem(9), vmem_alloc(9F), vmem_create(9F)

illumos January 18, 2017 illumos