Merge branch 'perf/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing into perf/core

6 files changed, 75 insertions, 75 deletions

diff --git a/include/trace/define_trace.h b/include/trace/define_trace.h
index 5acfb1eb4df9..1dfab5401511 100644
--- a/include/trace/define_trace.h
+++ b/include/trace/define_trace.h
@@ -65,6 +65,10 @@
 
 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
 
+/* Make all open coded DECLARE_TRACE nops */
+#undef DECLARE_TRACE
+#define DECLARE_TRACE(name, proto, args)
+
 #ifdef CONFIG_EVENT_TRACING
 #include <trace/ftrace.h>
 #endif
@@ -75,6 +79,7 @@
 #undef DEFINE_EVENT
 #undef DEFINE_EVENT_PRINT
 #undef TRACE_HEADER_MULTI_READ
+#undef DECLARE_TRACE
 
 /* Only undef what we defined in this file */
 #ifdef UNDEF_TRACE_INCLUDE_FILE
diff --git a/include/trace/events/module.h b/include/trace/events/module.h
index 4b0f48ba16a6..c7bb2f0482fe 100644
--- a/include/trace/events/module.h
+++ b/include/trace/events/module.h
@@ -51,11 +51,14 @@ TRACE_EVENT(module_free,
         TP_printk("%s", __get_str(name))
 );
 
+#ifdef CONFIG_MODULE_UNLOAD
+/* trace_module_get/put are only used if CONFIG_MODULE_UNLOAD is defined */
+
 DECLARE_EVENT_CLASS(module_refcnt,
 
-        TP_PROTO(struct module *mod, unsigned long ip, int refcnt),
+        TP_PROTO(struct module *mod, unsigned long ip),
 
-        TP_ARGS(mod, ip, refcnt),
+        TP_ARGS(mod, ip),
 
         TP_STRUCT__entry(
                 __field(        unsigned long,  ip              )
@@ -65,7 +68,7 @@ DECLARE_EVENT_CLASS(module_refcnt,
 
         TP_fast_assign(
                 __entry->ip     = ip;
-                __entry->refcnt = refcnt;
+                __entry->refcnt = __this_cpu_read(mod->refptr->incs) + __this_cpu_read(mod->refptr->decs);
                 __assign_str(name, mod->name);
         ),
 
@@ -75,17 +78,18 @@ DECLARE_EVENT_CLASS(module_refcnt,
 
 DEFINE_EVENT(module_refcnt, module_get,
 
-        TP_PROTO(struct module *mod, unsigned long ip, int refcnt),
+        TP_PROTO(struct module *mod, unsigned long ip),
 
-        TP_ARGS(mod, ip, refcnt)
+        TP_ARGS(mod, ip)
 );
 
 DEFINE_EVENT(module_refcnt, module_put,
 
-        TP_PROTO(struct module *mod, unsigned long ip, int refcnt),
+        TP_PROTO(struct module *mod, unsigned long ip),
 
-        TP_ARGS(mod, ip, refcnt)
+        TP_ARGS(mod, ip)
 );
+#endif /* CONFIG_MODULE_UNLOAD */
 
 TRACE_EVENT(module_request,
 
diff --git a/include/trace/events/napi.h b/include/trace/events/napi.h
index a8989c4547e7..188deca2f3c7 100644
--- a/include/trace/events/napi.h
+++ b/include/trace/events/napi.h
@@ -1,4 +1,7 @@
-#ifndef _TRACE_NAPI_H_
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM napi
+
+#if !defined(_TRACE_NAPI_H) || defined(TRACE_HEADER_MULTI_READ)
 #define _TRACE_NAPI_H_
 
 #include <linux/netdevice.h>
@@ -8,4 +11,7 @@ DECLARE_TRACE(napi_poll,
         TP_PROTO(struct napi_struct *napi),
         TP_ARGS(napi));
 
-#endif
+#endif /* _TRACE_NAPI_H_ */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>
diff --git a/include/trace/events/sched.h b/include/trace/events/sched.h
index cfceb0b73e20..4f733ecea46e 100644
--- a/include/trace/events/sched.h
+++ b/include/trace/events/sched.h
@@ -51,15 +51,12 @@ TRACE_EVENT(sched_kthread_stop_ret,
 
 /*
  * Tracepoint for waiting on task to unschedule:
- *
- * (NOTE: the 'rq' argument is not used by generic trace events,
- *        but used by the latency tracer plugin. )
  */
 TRACE_EVENT(sched_wait_task,
 
-        TP_PROTO(struct rq *rq, struct task_struct *p),
+        TP_PROTO(struct task_struct *p),
 
-        TP_ARGS(rq, p),
+        TP_ARGS(p),
 
         TP_STRUCT__entry(
                 __array(        char,   comm,   TASK_COMM_LEN   )
@@ -79,15 +76,12 @@ TRACE_EVENT(sched_wait_task,
 
 /*
  * Tracepoint for waking up a task:
- *
- * (NOTE: the 'rq' argument is not used by generic trace events,
- *        but used by the latency tracer plugin. )
  */
 DECLARE_EVENT_CLASS(sched_wakeup_template,
 
-        TP_PROTO(struct rq *rq, struct task_struct *p, int success),
+        TP_PROTO(struct task_struct *p, int success),
 
-        TP_ARGS(rq, p, success),
+        TP_ARGS(p, success),
 
         TP_STRUCT__entry(
                 __array(        char,   comm,   TASK_COMM_LEN   )
@@ -111,31 +105,25 @@ DECLARE_EVENT_CLASS(sched_wakeup_template,
 );
 
 DEFINE_EVENT(sched_wakeup_template, sched_wakeup,
-             TP_PROTO(struct rq *rq, struct task_struct *p, int success),
-             TP_ARGS(rq, p, success));
+             TP_PROTO(struct task_struct *p, int success),
+             TP_ARGS(p, success));
 
 /*
  * Tracepoint for waking up a new task:
- *
- * (NOTE: the 'rq' argument is not used by generic trace events,
- *        but used by the latency tracer plugin. )
  */
 DEFINE_EVENT(sched_wakeup_template, sched_wakeup_new,
-             TP_PROTO(struct rq *rq, struct task_struct *p, int success),
-             TP_ARGS(rq, p, success));
+             TP_PROTO(struct task_struct *p, int success),
+             TP_ARGS(p, success));
 
 /*
  * Tracepoint for task switches, performed by the scheduler:
- *
- * (NOTE: the 'rq' argument is not used by generic trace events,
- *        but used by the latency tracer plugin. )
  */
 TRACE_EVENT(sched_switch,
 
-        TP_PROTO(struct rq *rq, struct task_struct *prev,
+        TP_PROTO(struct task_struct *prev,
                  struct task_struct *next),
 
-        TP_ARGS(rq, prev, next),
+        TP_ARGS(prev, next),
 
         TP_STRUCT__entry(
                 __array(        char,   prev_comm,      TASK_COMM_LEN   )
diff --git a/include/trace/events/signal.h b/include/trace/events/signal.h
index a510b75ac304..814566c99d29 100644
--- a/include/trace/events/signal.h
+++ b/include/trace/events/signal.h
@@ -100,18 +100,7 @@ TRACE_EVENT(signal_deliver,
                   __entry->sa_handler, __entry->sa_flags)
 );
 
-/**
- * signal_overflow_fail - called when signal queue is overflow
- * @sig: signal number
- * @group: signal to process group or not (bool)
- * @info: pointer to struct siginfo
- *
- * Kernel fails to generate 'sig' signal with 'info' siginfo, because
- * siginfo queue is overflow, and the signal is dropped.
- * 'group' is not 0 if the signal will be sent to a process group.
- * 'sig' is always one of RT signals.
- */
-TRACE_EVENT(signal_overflow_fail,
+DECLARE_EVENT_CLASS(signal_queue_overflow,
 
         TP_PROTO(int sig, int group, struct siginfo *info),
 
@@ -135,6 +124,24 @@ TRACE_EVENT(signal_overflow_fail,
 );
 
 /**
+ * signal_overflow_fail - called when signal queue is overflow
+ * @sig: signal number
+ * @group: signal to process group or not (bool)
+ * @info: pointer to struct siginfo
+ *
+ * Kernel fails to generate 'sig' signal with 'info' siginfo, because
+ * siginfo queue is overflow, and the signal is dropped.
+ * 'group' is not 0 if the signal will be sent to a process group.
+ * 'sig' is always one of RT signals.
+ */
+DEFINE_EVENT(signal_queue_overflow, signal_overflow_fail,
+
+        TP_PROTO(int sig, int group, struct siginfo *info),
+
+        TP_ARGS(sig, group, info)
+);
+
+/**
  * signal_lose_info - called when siginfo is lost
  * @sig: signal number
  * @group: signal to process group or not (bool)
@@ -145,28 +152,13 @@ TRACE_EVENT(signal_overflow_fail,
  * 'group' is not 0 if the signal will be sent to a process group.
  * 'sig' is always one of non-RT signals.
  */
-TRACE_EVENT(signal_lose_info,
+DEFINE_EVENT(signal_queue_overflow, signal_lose_info,
 
         TP_PROTO(int sig, int group, struct siginfo *info),
 
-        TP_ARGS(sig, group, info),
-
-        TP_STRUCT__entry(
-                __field(        int,    sig     )
-                __field(        int,    group   )
-                __field(        int,    errno   )
-                __field(        int,    code    )
-        ),
-
-        TP_fast_assign(
-                __entry->sig    = sig;
-                __entry->group  = group;
-                TP_STORE_SIGINFO(__entry, info);
-        ),
-
-        TP_printk("sig=%d group=%d errno=%d code=%d",
-                  __entry->sig, __entry->group, __entry->errno, __entry->code)
+        TP_ARGS(sig, group, info)
 );
+
 #endif /* _TRACE_SIGNAL_H */
 
 /* This part must be outside protection */
diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h
index 0a29df092922..1016b2162935 100644
--- a/include/trace/ftrace.h
+++ b/include/trace/ftrace.h
@@ -154,9 +154,11 @@
  *
  *      field = (typeof(field))entry;
  *
- *      p = get_cpu_var(ftrace_event_seq);
+ *      p = &get_cpu_var(ftrace_event_seq);
  *      trace_seq_init(p);
- *      ret = trace_seq_printf(s, <TP_printk> "\n");
+ *      ret = trace_seq_printf(s, "%s: ", <call>);
+ *      if (ret)
+ *              ret = trace_seq_printf(s, <TP_printk> "\n");
  *      put_cpu();
  *      if (!ret)
  *              return TRACE_TYPE_PARTIAL_LINE;
@@ -450,38 +452,38 @@ perf_trace_disable_##name(struct ftrace_event_call *unused)		\
  *
  * static void ftrace_raw_event_<call>(proto)
  * {
+ *      struct ftrace_data_offsets_<call> __maybe_unused __data_offsets;
  *      struct ring_buffer_event *event;
  *      struct ftrace_raw_<call> *entry; <-- defined in stage 1
  *      struct ring_buffer *buffer;
  *      unsigned long irq_flags;
+ *      int __data_size;
  *      int pc;
  *
  *      local_save_flags(irq_flags);
  *      pc = preempt_count();
  *
+ *      __data_size = ftrace_get_offsets_<call>(&__data_offsets, args);
+ *
  *      event = trace_current_buffer_lock_reserve(&buffer,
  *                                event_<call>.id,
- *                                sizeof(struct ftrace_raw_<call>),
+ *                                sizeof(*entry) + __data_size,
  *                                irq_flags, pc);
  *      if (!event)
  *              return;
  *      entry   = ring_buffer_event_data(event);
  *
- *      <assign>;  <-- Here we assign the entries by the __field and
- *                      __array macros.
+ *      { <assign>; }  <-- Here we assign the entries by the __field and
+ *                         __array macros.
  *
- *      trace_current_buffer_unlock_commit(buffer, event, irq_flags, pc);
+ *      if (!filter_current_check_discard(buffer, event_call, entry, event))
+ *              trace_current_buffer_unlock_commit(buffer,
+ *                                                 event, irq_flags, pc);
  * }
  *
  * static int ftrace_raw_reg_event_<call>(struct ftrace_event_call *unused)
  * {
- *      int ret;
- *
- *      ret = register_trace_<call>(ftrace_raw_event_<call>);
- *      if (!ret)
- *              pr_info("event trace: Could not activate trace point "
- *                      "probe to <call>");
- *      return ret;
+ *      return register_trace_<call>(ftrace_raw_event_<call>);
  * }
  *
  * static void ftrace_unreg_event_<call>(struct ftrace_event_call *unused)
@@ -493,6 +495,8 @@ perf_trace_disable_##name(struct ftrace_event_call *unused)		\
  *      .trace                  = ftrace_raw_output_<call>, <-- stage 2
  * };
  *
+ * static const char print_fmt_<call>[] = <TP_printk>;
+ *
  * static struct ftrace_event_call __used
  * __attribute__((__aligned__(4)))
  * __attribute__((section("_ftrace_events"))) event_<call> = {
@@ -501,6 +505,8 @@ perf_trace_disable_##name(struct ftrace_event_call *unused)		\
  *      .raw_init               = trace_event_raw_init,
  *      .regfunc                = ftrace_reg_event_<call>,
  *      .unregfunc              = ftrace_unreg_event_<call>,
+ *      .print_fmt              = print_fmt_<call>,
+ *      .define_fields          = ftrace_define_fields_<call>,
  * }
  *
  */
@@ -569,7 +575,6 @@ ftrace_raw_event_id_##call(struct ftrace_event_call *event_call,	\
                 return;                                                 \
         entry   = ring_buffer_event_data(event);                        \
                                                                         \
-                                                                        \
         tstruct                                                         \
                                                                         \
         { assign; }                                                     \