Merge pull request #6175 from XinzeChi/wip-finisher-lat

common: add latency perf counter for finisher

Reviewed-by: Sage Weil <sage@redhat.com>

diff --cc src/os/JournalingObjectStore.h
index 42d13f6491a46f9e09828a2f781493b06762640b,1531d3cdd000505791c866bd945e67abda3c59dd..bba3767b2c3d8643200bf509701346adb8a317a7
--- 1/src/os/JournalingObjectStore.h
--- 2/src/os/JournalingObjectStore.h
+++ b/src/os/JournalingObjectStore.h
@@@ -132,12 -133,10 +132,12 @@@ public
    JournalingObjectStore(const std::string& path)
      : ObjectStore(path),
        journal(NULL),
-       finisher(g_ceph_context),
+       finisher(g_ceph_context, "JournalObjectStore"),
        apply_manager(journal, finisher),
        replaying(false) {}
 -  
 +
 +  ~JournalingObjectStore() {
 +  }
  };
  
  #endif