diff options
Diffstat (limited to 'tools/perf/util/session.c')
| -rw-r--r-- | tools/perf/util/session.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index 7d2c8ce6cfad..5456c84c7dd1 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -24,6 +24,7 @@ #include "thread.h" #include "thread-stack.h" #include "stat.h" +#include "arch/common.h" static int perf_session__deliver_event(struct perf_session *session, union perf_event *event, @@ -125,7 +126,8 @@ struct perf_session *perf_session__new(struct perf_data *data, session->tool = tool; INIT_LIST_HEAD(&session->auxtrace_index); machines__init(&session->machines); - ordered_events__init(&session->ordered_events, ordered_events__deliver_event); + ordered_events__init(&session->ordered_events, + ordered_events__deliver_event, NULL); if (data) { if (perf_data__open(data)) @@ -150,6 +152,9 @@ struct perf_session *perf_session__new(struct perf_data *data, session->machines.host.env = &perf_env; } + session->machines.host.single_address_space = + perf_env__single_address_space(session->machines.host.env); + if (!data || perf_data__is_write(data)) { /* * In O_RDONLY mode this will be performed when reading the @@ -1522,6 +1527,13 @@ struct thread *perf_session__findnew(struct perf_session *session, pid_t pid) return machine__findnew_thread(&session->machines.host, -1, pid); } +/* + * Threads are identified by pid and tid, and the idle task has pid == tid == 0. + * So here a single thread is created for that, but actually there is a separate + * idle task per cpu, so there should be one 'struct thread' per cpu, but there + * is only 1. That causes problems for some tools, requiring workarounds. For + * example get_idle_thread() in builtin-sched.c, or thread_stack__per_cpu(). + */ int perf_session__register_idle_thread(struct perf_session *session) { struct thread *thread; |