diff options
Diffstat (limited to 'kernel/trace')
| -rw-r--r-- | kernel/trace/trace.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index a40ee413123c..6048fba2f590 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -271,6 +271,7 @@ static struct trace_export __rcu *ftrace_exports_list __read_mostly; static DEFINE_STATIC_KEY_FALSE(trace_function_exports_enabled); static DEFINE_STATIC_KEY_FALSE(trace_event_exports_enabled); +static DEFINE_STATIC_KEY_FALSE(trace_marker_exports_enabled); static inline void ftrace_exports_enable(struct trace_export *export) { @@ -279,6 +280,9 @@ static inline void ftrace_exports_enable(struct trace_export *export) if (export->flags & TRACE_EXPORT_EVENT) static_branch_inc(&trace_event_exports_enabled); + + if (export->flags & TRACE_EXPORT_MARKER) + static_branch_inc(&trace_marker_exports_enabled); } static inline void ftrace_exports_disable(struct trace_export *export) @@ -288,6 +292,9 @@ static inline void ftrace_exports_disable(struct trace_export *export) if (export->flags & TRACE_EXPORT_EVENT) static_branch_dec(&trace_event_exports_enabled); + + if (export->flags & TRACE_EXPORT_MARKER) + static_branch_dec(&trace_marker_exports_enabled); } static void ftrace_exports(struct ring_buffer_event *event, int flag) @@ -6687,6 +6694,8 @@ tracing_mark_write(struct file *filp, const char __user *ubuf, } else entry->buf[cnt] = '\0'; + if (static_branch_unlikely(&trace_marker_exports_enabled)) + ftrace_exports(event, TRACE_EXPORT_MARKER); __buffer_unlock_commit(buffer, event); if (tt) |