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omap: remove Block refcounting

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This commit is contained in:
cinap_lenrek 2014-06-08 00:26:23 +02:00
parent be3a5a6dc3
commit 3d20da3f8b
1 changed files with 1 additions and 9 deletions
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10
sys/src/9/omap/ucallocb.c
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@ -33,8 +33,6 @@ _ucallocb(int size)
b->list = nil; b->list = nil;
b->free = 0; b->free = 0;
b->flag = 0; b->flag = 0;
b->ref = 0;
_xinc(&b->ref);
/* align start of data portion by rounding up */ /* align start of data portion by rounding up */
addr = (ulong)b; addr = (ulong)b;
@ -117,16 +115,10 @@ void
ucfreeb(Block *b) ucfreeb(Block *b)
{ {
void *dead = (void*)Bdead; void *dead = (void*)Bdead;
long ref;
if(b == nil || (ref = _xdec(&b->ref)) > 0) if(b == nil)
return; return;
if(ref < 0){
dumpstack();
panic("ucfreeb: ref %ld; caller pc %#p", ref, getcallerpc(&b));
}
/* /*
* drivers which perform non cache coherent DMA manage their own buffer * drivers which perform non cache coherent DMA manage their own buffer
* pool of uncached buffers and provide their own free routine. * pool of uncached buffers and provide their own free routine.