RFC: Allow kfree to free all types of allocations ?

RFC: Allow kfree to free all types of allocations ?

[Joe Perches]

There are a lot of patches trying to match
various [kv].alloc allocations to specific frees.

But are there frees in a fast path?

Why not convert kfree to add a few extra tests
and add #defines for existing uses

Something like:

void kfree(const void *addr)
{
	if (is_kernel_rodata((unsigned long)addr))
		return;

	if (is_vmalloc_addr(addr))
		_vfree(addr);
	else
		_kfree(addr);
}

And add defines like:

#define kvfree		kfree
#define vfree		kfree
#define kfree_const	kfree

Does 4 extra tests really matter?