FS-Cache: Annotate slow-work runqueue proc lines for FS-Cache work items

Annotate slow-work runqueue proc lines for FS-Cache work items.  Objects
include the object ID and the state.  Operations include the object ID, the
operation ID and the operation type and state.

Signed-off-by: David Howells <dhowells@redhat.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/include/linux/fscache-cache.h b/include/linux/fscache-cache.h
index 84d3532dd3ea..7a9847ccd192 100644
--- a/include/linux/fscache-cache.h
+++ b/include/linux/fscache-cache.h
@@ -102,6 +102,16 @@ struct fscache_operation {
 
         /* operation releaser */
         fscache_operation_release_t release;
+
+#ifdef CONFIG_SLOW_WORK_PROC
+        const char *name;               /* operation name */
+        const char *state;              /* operation state */
+#define fscache_set_op_name(OP, N)      do { (OP)->name  = (N); } while(0)
+#define fscache_set_op_state(OP, S)     do { (OP)->state = (S); } while(0)
+#else
+#define fscache_set_op_name(OP, N)      do { } while(0)
+#define fscache_set_op_state(OP, S)     do { } while(0)
+#endif
 };
 
 extern atomic_t fscache_op_debug_id;
@@ -125,6 +135,7 @@ static inline void fscache_operation_init(struct fscache_operation *op,
         op->debug_id = atomic_inc_return(&fscache_op_debug_id);
         op->release = release;
         INIT_LIST_HEAD(&op->pend_link);
+        fscache_set_op_state(op, "Init");
 }
 
 /**
@@ -337,6 +348,7 @@ struct fscache_object {
                 FSCACHE_OBJECT_RECYCLING,       /* retiring object */
                 FSCACHE_OBJECT_WITHDRAWING,     /* withdrawing object */
                 FSCACHE_OBJECT_DEAD,            /* object is now dead */
+                FSCACHE_OBJECT__NSTATES
         } state;
 
         int                     debug_id;       /* debugging ID */