[PATCH mm,percpu_ref,rcu 4/6] mm: Make mem_obj_dump() vmalloc() dumps include start and length

[paulmck]

From: "Paul E. McKenney" <paul...@kernel.org>

This commit adds the starting address and number of pages to the vmalloc()
information dumped by way of vmalloc_dump_obj().

Cc: Andrew Morton <a...@linux-foundation.org>
Cc: Joonsoo Kim <iamjoonsoo....@lge.com>
Cc: <linux...@kvack.org>
Reported-by: Andrii Nakryiko <and...@kernel.org>
Suggested-by: Vlastimil Babka <vba...@suse.cz>
Signed-off-by: Paul E. McKenney <paul...@kernel.org>
---
 mm/vmalloc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index c274ea4..e3229ff 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -3456,7 +3456,8 @@ bool vmalloc_dump_obj(void *object)
        vm = find_vm_area(objp);
        if (!vm)
                return false;
-       pr_cont(" vmalloc allocated at %pS\n", vm->caller);
+       pr_cont(" %u-page vmalloc region starting at %#lx allocated at %pS\n",
+               vm->nr_pages, (unsigned long)vm->addr, vm->caller);
        return true;
 }
 
-- 
2.9.5