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Keep free block statistics.

This commit is contained in:
augustss 2000-03-27 08:27:03 +00:00
parent 9e5b3b729c
commit 8e7f7d2d69
1 changed files with 4 additions and 1 deletions
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5
sys/dev/usb/usb_mem.c
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@ -1,4 +1,4 @@
/* $NetBSD: usb_mem.c,v 1.17 1999/12/18 22:47:11 augustss Exp $ */
/* $NetBSD: usb_mem.c,v 1.18 2000/03/27 08:27:03 augustss Exp $ */
/*
* Copyright (c) 1998 The NetBSD Foundation, Inc.
@ -87,6 +87,7 @@ static void usb_block_freemem __P((usb_dma_block_t *));
static LIST_HEAD(, usb_dma_block) usb_blk_freelist =
LIST_HEAD_INITIALIZER(usb_blk_freelist);
int usb_blk_nfree = 0;
/* XXX should have different free list for different tags (for speed) */
static LIST_HEAD(, usb_frag_dma) usb_frag_freelist =
LIST_HEAD_INITIALIZER(usb_frag_freelist);
@ -117,6 +118,7 @@ usb_block_allocmem(tag, size, align, dmap)
for (p = LIST_FIRST(&usb_blk_freelist); p; p = LIST_NEXT(p, next)) {
if (p->tag == tag && p->size >= size && p->align >= align) {
LIST_REMOVE(p, next);
usb_blk_nfree--;
splx(s);
*dmap = p;
DPRINTFN(6,("usb_block_allocmem: free list size=%lu\n",
@ -206,6 +208,7 @@ usb_block_freemem(p)
DPRINTFN(6, ("usb_block_freemem: size=%lu\n", (u_long)p->size));
s = splusb();
LIST_INSERT_HEAD(&usb_blk_freelist, p, next);
usb_blk_nfree++;
splx(s);
}