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Diffstat (limited to 'tools/perf/util/thread.c')
-rw-r--r--tools/perf/util/thread.c52
1 files changed, 40 insertions, 12 deletions
diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c
index 3ce0498bdae6..2fde0d5e40b5 100644
--- a/tools/perf/util/thread.c
+++ b/tools/perf/util/thread.c
@@ -8,6 +8,22 @@
#include "debug.h"
#include "comm.h"
+int thread__init_map_groups(struct thread *thread, struct machine *machine)
+{
+ struct thread *leader;
+ pid_t pid = thread->pid_;
+
+ if (pid == thread->tid) {
+ thread->mg = map_groups__new();
+ } else {
+ leader = machine__findnew_thread(machine, pid, pid);
+ if (leader)
+ thread->mg = map_groups__get(leader->mg);
+ }
+
+ return thread->mg ? 0 : -1;
+}
+
struct thread *thread__new(pid_t pid, pid_t tid)
{
char *comm_str;
@@ -15,7 +31,6 @@ struct thread *thread__new(pid_t pid, pid_t tid)
struct thread *thread = zalloc(sizeof(*thread));
if (thread != NULL) {
- map_groups__init(&thread->mg);
thread->pid_ = pid;
thread->tid = tid;
thread->ppid = -1;
@@ -45,7 +60,8 @@ void thread__delete(struct thread *thread)
{
struct comm *comm, *tmp;
- map_groups__exit(&thread->mg);
+ map_groups__put(thread->mg);
+ thread->mg = NULL;
list_for_each_entry_safe(comm, tmp, &thread->comm_list, list) {
list_del(&comm->list);
comm__free(comm);
@@ -111,18 +127,35 @@ int thread__comm_len(struct thread *thread)
size_t thread__fprintf(struct thread *thread, FILE *fp)
{
return fprintf(fp, "Thread %d %s\n", thread->tid, thread__comm_str(thread)) +
- map_groups__fprintf(&thread->mg, verbose, fp);
+ map_groups__fprintf(thread->mg, verbose, fp);
}
void thread__insert_map(struct thread *thread, struct map *map)
{
- map_groups__fixup_overlappings(&thread->mg, map, verbose, stderr);
- map_groups__insert(&thread->mg, map);
+ map_groups__fixup_overlappings(thread->mg, map, verbose, stderr);
+ map_groups__insert(thread->mg, map);
+}
+
+static int thread__clone_map_groups(struct thread *thread,
+ struct thread *parent)
+{
+ int i;
+
+ /* This is new thread, we share map groups for process. */
+ if (thread->pid_ == parent->pid_)
+ return 0;
+
+ /* But this one is new process, copy maps. */
+ for (i = 0; i < MAP__NR_TYPES; ++i)
+ if (map_groups__clone(thread->mg, parent->mg, i) < 0)
+ return -ENOMEM;
+
+ return 0;
}
int thread__fork(struct thread *thread, struct thread *parent, u64 timestamp)
{
- int i, err;
+ int err;
if (parent->comm_set) {
const char *comm = thread__comm_str(parent);
@@ -134,13 +167,8 @@ int thread__fork(struct thread *thread, struct thread *parent, u64 timestamp)
thread->comm_set = true;
}
- for (i = 0; i < MAP__NR_TYPES; ++i)
- if (map_groups__clone(&thread->mg, &parent->mg, i) < 0)
- return -ENOMEM;
-
thread->ppid = parent->tid;
-
- return 0;
+ return thread__clone_map_groups(thread, parent);
}
void thread__find_cpumode_addr_location(struct thread *thread,