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>

diff --git a/mm/bootmem.c b/mm/bootmem.c
index ac5a891..51a0ccf 100644 (file)
--- a/mm/bootmem.c
+++ b/mm/bootmem.c
@@ -435,6 +435,10 @@ 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);
@@ -442,10 +446,6 @@ static void * __init alloc_bootmem_core(struct bootmem_data *bdata,
        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;