bootmem: print request details before BUG_ON(them)

Moving the request details print-out before the sanity checks that
might panic() enables us to analyse invalid requests without having
access to the line information of the stack dump.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

mm/bootmem.c

@@ -435,17 +435,17 @@ static void * __init alloc_bootmem_core(struct bootmem_data *bdata,
 	unsigned long fallback = 0;
 	unsigned long min, max, start, sidx, midx, step;
 
+	bdebug("nid=%td size=%lx [%lu pages] align=%lx goal=%lx limit=%lx\n",
+		bdata - bootmem_node_data, size, PAGE_ALIGN(size) >> PAGE_SHIFT,
+		align, goal, limit);
+
 	BUG_ON(!size);
 	BUG_ON(align & (align - 1));
 	BUG_ON(limit && goal + size > limit);
 
 	if (!bdata->node_bootmem_map)
 		return NULL;
 
-	bdebug("nid=%td size=%lx [%lu pages] align=%lx goal=%lx limit=%lx\n",
-		bdata - bootmem_node_data, size, PAGE_ALIGN(size) >> PAGE_SHIFT,
-		align, goal, limit);
-
 	min = bdata->node_min_pfn;
 	max = bdata->node_low_pfn;