diff options
Diffstat (limited to 'kernel/trace/trace.h')
| -rw-r--r-- | kernel/trace/trace.h | 39 |
1 files changed, 31 insertions, 8 deletions
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h index 99372dd7d168..4eb1d004d5f2 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -178,10 +178,10 @@ struct trace_array_cpu { kuid_t uid; char comm[TASK_COMM_LEN]; - bool ignore_pid; #ifdef CONFIG_FUNCTION_TRACER - bool ftrace_ignore_pid; + int ftrace_ignore_pid; #endif + bool ignore_pid; }; struct tracer; @@ -207,6 +207,30 @@ struct trace_pid_list { unsigned long *pids; }; +enum { + TRACE_PIDS = BIT(0), + TRACE_NO_PIDS = BIT(1), +}; + +static inline bool pid_type_enabled(int type, struct trace_pid_list *pid_list, + struct trace_pid_list *no_pid_list) +{ + /* Return true if the pid list in type has pids */ + return ((type & TRACE_PIDS) && pid_list) || + ((type & TRACE_NO_PIDS) && no_pid_list); +} + +static inline bool still_need_pid_events(int type, struct trace_pid_list *pid_list, + struct trace_pid_list *no_pid_list) +{ + /* + * Turning off what is in @type, return true if the "other" + * pid list, still has pids in it. + */ + return (!(type & TRACE_PIDS) && pid_list) || + (!(type & TRACE_NO_PIDS) && no_pid_list); +} + typedef bool (*cond_update_fn_t)(struct trace_array *tr, void *cond_data); /** @@ -285,6 +309,7 @@ struct trace_array { #endif #endif struct trace_pid_list __rcu *filtered_pids; + struct trace_pid_list __rcu *filtered_no_pids; /* * max_lock is used to protect the swapping of buffers * when taking a max snapshot. The buffers themselves are @@ -331,6 +356,7 @@ struct trace_array { #ifdef CONFIG_FUNCTION_TRACER struct ftrace_ops *ops; struct trace_pid_list __rcu *function_pids; + struct trace_pid_list __rcu *function_no_pids; #ifdef CONFIG_DYNAMIC_FTRACE /* All of these are protected by the ftrace_lock */ struct list_head func_probes; @@ -557,12 +583,7 @@ struct tracer { * caller, and we can skip the current check. */ enum { - TRACE_BUFFER_BIT, - TRACE_BUFFER_NMI_BIT, - TRACE_BUFFER_IRQ_BIT, - TRACE_BUFFER_SIRQ_BIT, - - /* Start of function recursion bits */ + /* Function recursion bits */ TRACE_FTRACE_BIT, TRACE_FTRACE_NMI_BIT, TRACE_FTRACE_IRQ_BIT, @@ -787,6 +808,7 @@ extern int pid_max; bool trace_find_filtered_pid(struct trace_pid_list *filtered_pids, pid_t search_pid); bool trace_ignore_this_task(struct trace_pid_list *filtered_pids, + struct trace_pid_list *filtered_no_pids, struct task_struct *task); void trace_filter_add_remove_task(struct trace_pid_list *pid_list, struct task_struct *self, @@ -1307,6 +1329,7 @@ extern int trace_get_user(struct trace_parser *parser, const char __user *ubuf, C(IRQ_INFO, "irq-info"), \ C(MARKERS, "markers"), \ C(EVENT_FORK, "event-fork"), \ + C(PAUSE_ON_TRACE, "pause-on-trace"), \ FUNCTION_FLAGS \ FGRAPH_FLAGS \ STACK_FLAGS \ |