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gpu : add pages pool to avoid alloc_pages failure

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杜坤明
2011-09-01 10:15:09 +08:00
parent df3e0a2393
commit 3d292d1407
1 changed files with 38 additions and 0 deletions
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38
drivers/staging/rk29/vivante/hal/os/linux/kernel/gc_hal_kernel_os.c Normal file → Executable file
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@@ -143,6 +143,9 @@ struct _gckOS
gctINT cacheNum;
gcsMapedNonPagedCache * cacheHead;
gcsMapedNonPagedCache * cacheTail;
gctINT pageNum;
struct page * pageCache[100];
#endif
};
@@ -526,6 +529,13 @@ gckOS_Construct(
os->signal.currentID = 0;
#endif
#if gcdkUSE_MAPED_NONPAGE_CACHE
for(os->pageNum=0; os->pageNum<50; os->pageNum++) {
os->pageCache[os->pageNum] = alloc_pages(GFP_KERNEL | GFP_DMA, get_order(5 * PAGE_SIZE));
}
//printk("os->pageNum = %d\n", os->pageNum);
#endif
/* Return pointer to the gckOS object. */
*Os = os;
@@ -601,6 +611,12 @@ gckOS_Destroy(
// dkm : gcdkUSE_MAPED_NONPAGE_CACHE
#if gcdkUSE_MAPED_NONPAGE_CACHE
_FreeAllMapedNonPagedCache(Os, 0);
for(i=0; i<Os->pageNum; i++) {
if(Os->pageCache[i]) {
free_pages((unsigned long)page_address(Os->pageCache[i]), get_order(5 * PAGE_SIZE));
}
}
#endif
#if !USE_NEW_LINUX_SIGNAL
@@ -1496,7 +1512,19 @@ gckOS_AllocateNonPagedMemory(
#else
size = mdl->numPages * PAGE_SIZE;
order = get_order(size);
#if gcdkUSE_MAPED_NONPAGE_CACHE
if(5==mdl->numPages && Os->pageNum>0 && Os->pageCache[Os->pageNum-1]) {
Os->pageNum--;
page = Os->pageCache[Os->pageNum];
Os->pageCache[Os->pageNum] = gcvNULL;
//printk("pop pages, os->pageNum = %d\n", Os->pageNum);
} else {
page = alloc_pages(GFP_KERNEL | GFP_DMA, order);
}
#else
page = alloc_pages(GFP_KERNEL | GFP_DMA, order);
#endif
if (page == gcvNULL)
{
@@ -1833,7 +1861,17 @@ gceSTATUS gckOS_FreeNonPagedMemoryRealy(
size -= PAGE_SIZE;
}
#if gcdkUSE_MAPED_NONPAGE_CACHE
if(5==mdl->numPages && Os->pageNum<100 && !Os->pageCache[Os->pageNum]) {
Os->pageCache[Os->pageNum] = virt_to_page(mdl->kaddr);
Os->pageNum ++;
//printk("push pages, os->pageNum = %d\n", Os->pageNum);
} else {
free_pages((unsigned long)mdl->kaddr, get_order(mdl->numPages * PAGE_SIZE));
}
#else
free_pages((unsigned long)mdl->kaddr, get_order(mdl->numPages * PAGE_SIZE));
#endif
iounmap(mdl->addr);
#endif /* NO_DMA_COHERENT */