arch/sh/kernel/dwarf.c: destroy mempools on cleanup

dwarf_reg_pool and dwarf_frame_pool are not properly destroyed when
cleaning up the dwarf unwinder.  Destroy them with mempool_destroy().

Also mark dwarf_unwinder_cleanup() as __init.

Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 5 insertions, 1 deletions

diff --git a/arch/sh/kernel/dwarf.c b/arch/sh/kernel/dwarf.c
index 67a049e75ec1..60437e9c345e 100644
--- a/arch/sh/kernel/dwarf.c
+++ b/arch/sh/kernel/dwarf.c
@@ -993,7 +993,7 @@ static struct unwinder dwarf_unwinder = {
         .rating = 150,
 };
 
-static void dwarf_unwinder_cleanup(void)
+static void __init dwarf_unwinder_cleanup(void)
 {
         struct dwarf_fde *fde, *next_fde;
         struct dwarf_cie *cie, *next_cie;
@@ -1009,6 +1009,10 @@ static void dwarf_unwinder_cleanup(void)
         rbtree_postorder_for_each_entry_safe(cie, next_cie, &cie_root, node)
                 kfree(cie);
 
+        if (dwarf_reg_pool)
+                mempool_destroy(dwarf_reg_pool);
+        if (dwarf_frame_pool)
+                mempool_destroy(dwarf_frame_pool);
         kmem_cache_destroy(dwarf_reg_cachep);
         kmem_cache_destroy(dwarf_frame_cachep);
 }