[XFS] make btree tracing generic

Make the existing bmap btree tracing generic so that it applies to all
btree types.

Some fragments lifted from a patch by Dave Chinner.

SGI-PV: 985583

SGI-Modid: xfs-linux-melb:xfs-kern:32187a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Bill O'Donnell <billodo@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>

1 files changed, 73 insertions, 0 deletions

diff --git a/fs/xfs/xfs_alloc_btree.c b/fs/xfs/xfs_alloc_btree.c
index 60c121f1e81b..9c91dfcb6f29 100644
--- a/fs/xfs/xfs_alloc_btree.c
+++ b/fs/xfs/xfs_alloc_btree.c
@@ -2219,8 +2219,81 @@ xfs_allocbt_dup_cursor(
                         cur->bc_btnum);
 }
 
+#ifdef XFS_BTREE_TRACE
+ktrace_t        *xfs_allocbt_trace_buf;
+
+STATIC void
+xfs_allocbt_trace_enter(
+        struct xfs_btree_cur    *cur,
+        const char              *func,
+        char                    *s,
+        int                     type,
+        int                     line,
+        __psunsigned_t          a0,
+        __psunsigned_t          a1,
+        __psunsigned_t          a2,
+        __psunsigned_t          a3,
+        __psunsigned_t          a4,
+        __psunsigned_t          a5,
+        __psunsigned_t          a6,
+        __psunsigned_t          a7,
+        __psunsigned_t          a8,
+        __psunsigned_t          a9,
+        __psunsigned_t          a10)
+{
+        ktrace_enter(xfs_allocbt_trace_buf, (void *)(__psint_t)type,
+                (void *)func, (void *)s, NULL, (void *)cur,
+                (void *)a0, (void *)a1, (void *)a2, (void *)a3,
+                (void *)a4, (void *)a5, (void *)a6, (void *)a7,
+                (void *)a8, (void *)a9, (void *)a10);
+}
+
+STATIC void
+xfs_allocbt_trace_cursor(
+        struct xfs_btree_cur    *cur,
+        __uint32_t              *s0,
+        __uint64_t              *l0,
+        __uint64_t              *l1)
+{
+        *s0 = cur->bc_private.a.agno;
+        *l0 = cur->bc_rec.a.ar_startblock;
+        *l1 = cur->bc_rec.a.ar_blockcount;
+}
+
+STATIC void
+xfs_allocbt_trace_key(
+        struct xfs_btree_cur    *cur,
+        union xfs_btree_key     *key,
+        __uint64_t              *l0,
+        __uint64_t              *l1)
+{
+        *l0 = be32_to_cpu(key->alloc.ar_startblock);
+        *l1 = be32_to_cpu(key->alloc.ar_blockcount);
+}
+
+STATIC void
+xfs_allocbt_trace_record(
+        struct xfs_btree_cur    *cur,
+        union xfs_btree_rec     *rec,
+        __uint64_t              *l0,
+        __uint64_t              *l1,
+        __uint64_t              *l2)
+{
+        *l0 = be32_to_cpu(rec->alloc.ar_startblock);
+        *l1 = be32_to_cpu(rec->alloc.ar_blockcount);
+        *l2 = 0;
+}
+#endif /* XFS_BTREE_TRACE */
+
 static const struct xfs_btree_ops xfs_allocbt_ops = {
         .dup_cursor             = xfs_allocbt_dup_cursor,
+
+#ifdef XFS_BTREE_TRACE
+        .trace_enter            = xfs_allocbt_trace_enter,
+        .trace_cursor           = xfs_allocbt_trace_cursor,
+        .trace_key              = xfs_allocbt_trace_key,
+        .trace_record           = xfs_allocbt_trace_record,
+#endif
 };
 
 /*