Imbus/xv6-riscv-kernel
1
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Make cp a magic symbol.

Browse source
This commit is contained in:
rsc 2007-08-10 16:37:27 +00:00
parent 3bbbaca14d
commit b6095304b7
10 changed files with 32 additions and 41 deletions
Download patch file Download diff file Expand all files Collapse all files

14
kalloc.c
View file

@ -40,24 +40,22 @@ kinit(void)
kfree(start, mem * PAGE);
}
// Free the len bytes of memory pointed at by cp,
// Free the len bytes of memory pointed at by v,
// which normally should have been returned by a
// call to kalloc(cp). (The exception is when
// call to kalloc(len). (The exception is when
// initializing the allocator; see kinit above.)
void
kfree(char *cp, int len)
kfree(char *v, int len)
{
struct run **rr;
struct run *p = (struct run*) cp;
struct run *pend = (struct run*) (cp + len);
int i;
struct run *p = (struct run*)v;
struct run *pend = (struct run*)(v + len);
if(len % PAGE)
panic("kfree");
// Fill with junk to catch dangling refs.
for(i = 0; i < len; i++)
cp[i] = 1;
memset(v, 1, len);
acquire(&kalloc_lock);