diff options
Diffstat (limited to 'kernel/trace/trace_events.c')
| -rw-r--r-- | kernel/trace/trace_events.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c index 14ff4ff3caab..f94be0c2827b 100644 --- a/kernel/trace/trace_events.c +++ b/kernel/trace/trace_events.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * event tracer * @@ -239,7 +240,7 @@ bool trace_event_ignore_this_pid(struct trace_event_file *trace_file) struct trace_array_cpu *data; struct trace_pid_list *pid_list; - pid_list = rcu_dereference_sched(tr->filtered_pids); + pid_list = rcu_dereference_raw(tr->filtered_pids); if (!pid_list) return false; @@ -512,7 +513,7 @@ event_filter_pid_sched_process_exit(void *data, struct task_struct *task) struct trace_pid_list *pid_list; struct trace_array *tr = data; - pid_list = rcu_dereference_sched(tr->filtered_pids); + pid_list = rcu_dereference_raw(tr->filtered_pids); trace_filter_add_remove_task(pid_list, NULL, task); } @@ -636,7 +637,7 @@ static void __ftrace_clear_event_pids(struct trace_array *tr) rcu_assign_pointer(tr->filtered_pids, NULL); /* Wait till all users are no longer using pid filtering */ - synchronize_sched(); + tracepoint_synchronize_unregister(); trace_free_pid_list(pid_list); } @@ -1622,7 +1623,7 @@ ftrace_event_pid_write(struct file *filp, const char __user *ubuf, } if (filtered_pids) { - synchronize_sched(); + tracepoint_synchronize_unregister(); trace_free_pid_list(filtered_pids); } else if (pid_list) { /* @@ -3036,8 +3037,8 @@ int event_trace_del_tracer(struct trace_array *tr) /* Disable any running events */ __ftrace_set_clr_event_nolock(tr, NULL, NULL, NULL, 0); - /* Access to events are within rcu_read_lock_sched() */ - synchronize_sched(); + /* Make sure no more events are being executed */ + tracepoint_synchronize_unregister(); down_write(&trace_event_sem); __trace_remove_event_dirs(tr); |