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-rw-r--r--kernel/trace/trace.h18
1 files changed, 16 insertions, 2 deletions
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 00f873910c..64450615ca 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -334,8 +334,8 @@ struct trace_array {
*/
struct array_buffer max_buffer;
bool allocated_snapshot;
-#endif
-#ifdef CONFIG_TRACER_MAX_TRACE
+ spinlock_t snapshot_trigger_lock;
+ unsigned int snapshot;
unsigned long max_latency;
#ifdef CONFIG_FSNOTIFY
struct dentry *d_max_latency;
@@ -1375,6 +1375,16 @@ static inline void trace_buffer_unlock_commit(struct trace_array *tr,
trace_buffer_unlock_commit_regs(tr, buffer, event, trace_ctx, NULL);
}
+DECLARE_PER_CPU(bool, trace_taskinfo_save);
+int trace_save_cmdline(struct task_struct *tsk);
+int trace_create_savedcmd(void);
+int trace_alloc_tgid_map(void);
+void trace_free_saved_cmdlines_buffer(void);
+
+extern const struct file_operations tracing_saved_cmdlines_fops;
+extern const struct file_operations tracing_saved_tgids_fops;
+extern const struct file_operations tracing_saved_cmdlines_size_fops;
+
DECLARE_PER_CPU(struct ring_buffer_event *, trace_buffered_event);
DECLARE_PER_CPU(int, trace_buffered_event_cnt);
void trace_buffered_event_disable(void);
@@ -1973,12 +1983,16 @@ static inline void trace_event_eval_update(struct trace_eval_map **map, int len)
#ifdef CONFIG_TRACER_SNAPSHOT
void tracing_snapshot_instance(struct trace_array *tr);
int tracing_alloc_snapshot_instance(struct trace_array *tr);
+int tracing_arm_snapshot(struct trace_array *tr);
+void tracing_disarm_snapshot(struct trace_array *tr);
#else
static inline void tracing_snapshot_instance(struct trace_array *tr) { }
static inline int tracing_alloc_snapshot_instance(struct trace_array *tr)
{
return 0;
}
+static inline int tracing_arm_snapshot(struct trace_array *tr) { return 0; }
+static inline void tracing_disarm_snapshot(struct trace_array *tr) { }
#endif
#ifdef CONFIG_PREEMPT_TRACER