perf tools: Add machine__module_dso function

Separate the dso object addition and update when adding new kernel
module.

Currently we update dso's symtab_type any time we find it in the list,
because we can't distinguish between new and found dso from
__dsos__findnew function.

Adding machine__module_dso that separates finding and adding new dso
objects, so there's no superfluous update of dso.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-uvqgs5tyq4wssnq6fm43hgvk@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index 24f8c97..dbb5f03 100644 (file)
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -460,12 +460,35 @@ int machine__process_lost_event(struct machine *machine __maybe_unused,
        return 0;
 }
 
+static struct dso *machine__module_dso(struct machine *machine, const char *filename)
+{
+       struct dso *dso;
+       bool compressed;
+
+       dso = dsos__find(&machine->kernel_dsos, filename, false);
+       if (!dso) {
+               dso = dsos__addnew(&machine->kernel_dsos, filename);
+               if (dso == NULL)
+                       return NULL;
+
+               if (machine__is_host(machine))
+                       dso->symtab_type = DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE;
+               else
+                       dso->symtab_type = DSO_BINARY_TYPE__GUEST_KMODULE;
+
+               /* _KMODULE_COMP should be next to _KMODULE */
+               if (is_kernel_module(filename, &compressed) && compressed)
+                       dso->symtab_type++;
+       }
+
+       return dso;
+}
+
 struct map *machine__new_module(struct machine *machine, u64 start,
                                const char *filename)
 {
        struct map *map;
-       struct dso *dso = __dsos__findnew(&machine->kernel_dsos, filename);
-       bool compressed;
+       struct dso *dso = machine__module_dso(machine, filename);
 
        if (dso == NULL)
                return NULL;
@@ -474,15 +497,6 @@ struct map *machine__new_module(struct machine *machine, u64 start,
        if (map == NULL)
                return NULL;
 
-       if (machine__is_host(machine))
-               dso->symtab_type = DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE;
-       else
-               dso->symtab_type = DSO_BINARY_TYPE__GUEST_KMODULE;
-
-       /* _KMODULE_COMP should be next to _KMODULE */
-       if (is_kernel_module(filename, &compressed) && compressed)
-               dso->symtab_type++;
-
        map_groups__insert(&machine->kmaps, map);
        return map;
 }