SVR5

kmem_free(D3)

kmem_free -- free previously allocated kernel memory

Synopsis

   #include <sys/types.h>
   #include <sys/kmem.h>
   #include <sys/ddi.h>
   
   void kmem_free(void *addr, size_t size);

Description

kmem_free returns to the kernel allocator size bytes of kernel memory previously allocated by kmem_alloc(D3), kmem_zalloc(D3), kmem_alloc_phys(D3), kmem_alloc_physreq(D3), or kmem_zalloc_physreq(D3),

Arguments

addr: Address of the allocated memory to be returned. This must specify the same address that was returned by the corresponding allocation function.
size: Number of bytes to free. This must specify the same number of bytes as was allocated by the corresponding call to an allocation function.

Together, the addr and size arguments must specify exactly one complete area of memory that was allocated by the allocating function. In other words, the memory cannot be freed piecemeal.

Return values

None

Usage

Context and synchronization

All contexts.

Hardware applicability

All

Version applicability

ddi: 1, 2, 3, 4, 5, 5mp, 6, 6mp, 7, 7mp, 7.1, 7.1mp, 8, 8mp

Differences between versions

In DDI 5 amd 5mp, memory allocated by kmem_alloc_physcontig(D3) must be free by kmem_free_physcontig(D3).

References

kmem_alloc(D3), kmem_alloc_phys(D3), kmem_alloc_physreq(D3), kmem_zalloc_physreq(D3), kmem_alloc_physcontig(D3), kmem_free_physcontig(D3), kmem_zalloc(D3)

``Memory allocation'' in HDK Technical Reference