[PATCH] Cleanup bootmem allocator and fix alloc_bootmem_low
Patch cleans up the alloc_bootmem fix for swiotlb. Patch removes
alloc_bootmem_*_limit api and fixes alloc_boot_*low api to do the right
thing -- allocate from low32 memory.
Signed-off-by: Ravikiran Thirumalai <kiran@scalex86.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/mm/bootmem.c b/mm/bootmem.c
index 16b9465..cbb82ee 100644
--- a/mm/bootmem.c
+++ b/mm/bootmem.c
@@ -393,15 +393,14 @@
return(free_all_bootmem_core(NODE_DATA(0)));
}
-void * __init __alloc_bootmem_limit (unsigned long size, unsigned long align, unsigned long goal,
- unsigned long limit)
+void * __init __alloc_bootmem(unsigned long size, unsigned long align, unsigned long goal)
{
pg_data_t *pgdat = pgdat_list;
void *ptr;
for_each_pgdat(pgdat)
if ((ptr = __alloc_bootmem_core(pgdat->bdata, size,
- align, goal, limit)))
+ align, goal, 0)))
return(ptr);
/*
@@ -413,15 +412,40 @@
}
-void * __init __alloc_bootmem_node_limit (pg_data_t *pgdat, unsigned long size, unsigned long align,
- unsigned long goal, unsigned long limit)
+void * __init __alloc_bootmem_node(pg_data_t *pgdat, unsigned long size, unsigned long align,
+ unsigned long goal)
{
void *ptr;
- ptr = __alloc_bootmem_core(pgdat->bdata, size, align, goal, limit);
+ ptr = __alloc_bootmem_core(pgdat->bdata, size, align, goal, 0);
if (ptr)
return (ptr);
- return __alloc_bootmem_limit(size, align, goal, limit);
+ return __alloc_bootmem(size, align, goal);
}
+#define LOW32LIMIT 0xffffffff
+
+void * __init __alloc_bootmem_low(unsigned long size, unsigned long align, unsigned long goal)
+{
+ pg_data_t *pgdat = pgdat_list;
+ void *ptr;
+
+ for_each_pgdat(pgdat)
+ if ((ptr = __alloc_bootmem_core(pgdat->bdata, size,
+ align, goal, LOW32LIMIT)))
+ return(ptr);
+
+ /*
+ * Whoops, we cannot satisfy the allocation request.
+ */
+ printk(KERN_ALERT "low bootmem alloc of %lu bytes failed!\n", size);
+ panic("Out of low memory");
+ return NULL;
+}
+
+void * __init __alloc_bootmem_low_node(pg_data_t *pgdat, unsigned long size,
+ unsigned long align, unsigned long goal)
+{
+ return __alloc_bootmem_core(pgdat->bdata, size, align, goal, LOW32LIMIT);
+}