perf tools: Set thread->mg.machine in all places

We were setting this only in machine__init(), i.e. for the map_groups that
holds the kernel module maps, not for the one used for a thread's executable
mmaps.

Now we are sure that we can obtain the machine where a thread is by going
via thread->mg->machine, thus we can, in the following patch, make all
codepaths that receive machine _and_ thread, drop the machine one.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jean Pihet <jean.pihet@linaro.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-y6zgaqsvhrf04v57u15e4ybm@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 34fc7c8..c70b3ff 100644 (file)
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -21,7 +21,7 @@ static void dsos__init(struct dsos *dsos)
 
 int machine__init(struct machine *machine, const char *root_dir, pid_t pid)
 {
-       map_groups__init(&machine->kmaps);
+       map_groups__init(&machine->kmaps, machine);
        RB_CLEAR_NODE(&machine->rb_node);
        dsos__init(&machine->user_dsos);
        dsos__init(&machine->kernel_dsos);
@@ -32,7 +32,6 @@ int machine__init(struct machine *machine, const char *root_dir, pid_t pid)
 
        machine->vdso_info = NULL;
 
-       machine->kmaps.machine = machine;
        machine->pid = pid;
 
        machine->symbol_filter = NULL;
@@ -319,7 +318,7 @@ static void machine__update_thread_pid(struct machine *machine,
                goto out_err;
 
        if (!leader->mg)
-               leader->mg = map_groups__new();
+               leader->mg = map_groups__new(machine);
 
        if (!leader->mg)
                goto out_err;

diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
index 2137c45..040a785 100644 (file)
--- a/tools/perf/util/map.c
+++ b/tools/perf/util/map.c
@@ -413,14 +413,14 @@ u64 map__objdump_2mem(struct map *map, u64 ip)
        return ip + map->reloc;
 }
 
-void map_groups__init(struct map_groups *mg)
+void map_groups__init(struct map_groups *mg, struct machine *machine)
 {
        int i;
        for (i = 0; i < MAP__NR_TYPES; ++i) {
                mg->maps[i] = RB_ROOT;
                INIT_LIST_HEAD(&mg->removed_maps[i]);
        }
-       mg->machine = NULL;
+       mg->machine = machine;
        mg->refcnt = 1;
 }
 
@@ -471,12 +471,12 @@ bool map_groups__empty(struct map_groups *mg)
        return true;
 }
 
-struct map_groups *map_groups__new(void)
+struct map_groups *map_groups__new(struct machine *machine)
 {
        struct map_groups *mg = malloc(sizeof(*mg));
 
        if (mg != NULL)
-               map_groups__init(mg);
+               map_groups__init(mg, machine);
 
        return mg;
 }

diff --git a/tools/perf/util/map.h b/tools/perf/util/map.h
index 2f83954..6951a9d 100644 (file)
--- a/tools/perf/util/map.h
+++ b/tools/perf/util/map.h
@@ -64,7 +64,7 @@ struct map_groups {
        int              refcnt;
 };
 
-struct map_groups *map_groups__new(void);
+struct map_groups *map_groups__new(struct machine *machine);
 void map_groups__delete(struct map_groups *mg);
 bool map_groups__empty(struct map_groups *mg);
 
@@ -150,7 +150,7 @@ void maps__remove(struct rb_root *maps, struct map *map);
 struct map *maps__find(struct rb_root *maps, u64 addr);
 struct map *maps__first(struct rb_root *maps);
 struct map *maps__next(struct map *map);
-void map_groups__init(struct map_groups *mg);
+void map_groups__init(struct map_groups *mg, struct machine *machine);
 void map_groups__exit(struct map_groups *mg);
 int map_groups__clone(struct map_groups *mg,
                      struct map_groups *parent, enum map_type type);

diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c
index c414117..8db9626 100644 (file)
--- a/tools/perf/util/thread.c
+++ b/tools/perf/util/thread.c
@@ -15,7 +15,7 @@ int thread__init_map_groups(struct thread *thread, struct machine *machine)
        pid_t pid = thread->pid_;
 
        if (pid == thread->tid || pid == -1) {
-               thread->mg = map_groups__new();
+               thread->mg = map_groups__new(machine);
        } else {
                leader = machine__findnew_thread(machine, pid, pid);
                if (leader)