[PATCH 06/14] perf tools: Add machine__module_dso function

From: Jiri Olsa
Date: Tue Mar 03 2015 - 10:34:22 EST


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@xxxxxxxxxx>
Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Cc: Corey Ashford <cjashfor@xxxxxxxxxxxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: Stephane Eranian <eranian@xxxxxxxxxx>
---
tools/perf/util/machine.c | 36 +++++++++++++++++++++++++-----------
1 file changed, 25 insertions(+), 11 deletions(-)

diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index 24f8c978cfd4..14f7caf4824a 100644
--- 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__new(&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;
}
--
1.9.3

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