---

yaml
---
r: 269094
b: refs/heads/master
c: c73a3cb
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 6c3c5b26d08569ed80e10d3e02d3c997ed1e6e7c
+refs/heads/master: c73a3cb356f94b443aa7624b539493191dbf44c1

trunk/arch/x86/kernel/jump_label.c

@@ -42,7 +42,7 @@ void arch_jump_label_transform(struct jump_entry *entry,
 	put_online_cpus();
 }
 
-void arch_jump_label_text_poke_early(jump_label_t addr)
+void __init_or_module arch_jump_label_text_poke_early(jump_label_t addr)
 {
 	text_poke_early((void *)addr, ideal_nops[NOP_ATOMIC5],
 			JUMP_LABEL_NOP_SIZE);

trunk/include/linux/module.h

@@ -580,9 +580,6 @@ int unregister_module_notifier(struct notifier_block * nb);
 
 extern void print_modules(void);
 
-extern void module_update_tracepoints(void);
-extern int module_get_iter_tracepoints(struct tracepoint_iter *iter);
-
 #else /* !CONFIG_MODULES... */
 #define EXPORT_SYMBOL(sym)
 #define EXPORT_SYMBOL_GPL(sym)
@@ -698,15 +695,6 @@ static inline int unregister_module_notifier(struct notifier_block * nb)
 static inline void print_modules(void)
 {
 }
-
-static inline void module_update_tracepoints(void)
-{
-}
-
-static inline int module_get_iter_tracepoints(struct tracepoint_iter *iter)
-{
-	return 0;
-}
 #endif /* CONFIG_MODULES */
 
 #ifdef CONFIG_SYSFS

trunk/include/linux/ring_buffer.h

@@ -154,6 +154,8 @@ void ring_buffer_record_enable(struct ring_buffer *buffer);
 void ring_buffer_record_disable_cpu(struct ring_buffer *buffer, int cpu);
 void ring_buffer_record_enable_cpu(struct ring_buffer *buffer, int cpu);
 
+unsigned long ring_buffer_oldest_event_ts(struct ring_buffer *buffer, int cpu);
+unsigned long ring_buffer_bytes_cpu(struct ring_buffer *buffer, int cpu);
 unsigned long ring_buffer_entries(struct ring_buffer *buffer);
 unsigned long ring_buffer_overruns(struct ring_buffer *buffer);
 unsigned long ring_buffer_entries_cpu(struct ring_buffer *buffer, int cpu);

trunk/include/linux/trace_clock.h

@@ -15,5 +15,6 @@
 extern u64 notrace trace_clock_local(void);
 extern u64 notrace trace_clock(void);
 extern u64 notrace trace_clock_global(void);
+extern u64 notrace trace_clock_counter(void);
 
 #endif /* _LINUX_TRACE_CLOCK_H */

trunk/include/linux/tracepoint.h

@@ -54,17 +54,25 @@ extern int tracepoint_probe_unregister_noupdate(const char *name, void *probe,
 						void *data);
 extern void tracepoint_probe_update_all(void);
 
+#ifdef CONFIG_MODULES
+struct tp_module {
+	struct list_head list;
+	unsigned int num_tracepoints;
+	struct tracepoint * const *tracepoints_ptrs;
+};
+#endif /* CONFIG_MODULES */
+
 struct tracepoint_iter {
-	struct module *module;
+#ifdef CONFIG_MODULES
+	struct tp_module *module;
+#endif /* CONFIG_MODULES */
 	struct tracepoint * const *tracepoint;
 };
 
 extern void tracepoint_iter_start(struct tracepoint_iter *iter);
 extern void tracepoint_iter_next(struct tracepoint_iter *iter);
 extern void tracepoint_iter_stop(struct tracepoint_iter *iter);
 extern void tracepoint_iter_reset(struct tracepoint_iter *iter);
-extern int tracepoint_get_iter_range(struct tracepoint * const **tracepoint,
-	struct tracepoint * const *begin, struct tracepoint * const *end);
 
 /*
  * tracepoint_synchronize_unregister must be called between the last tracepoint
@@ -78,17 +86,6 @@ static inline void tracepoint_synchronize_unregister(void)
 
 #define PARAMS(args...) args
 
-#ifdef CONFIG_TRACEPOINTS
-extern
-void tracepoint_update_probe_range(struct tracepoint * const *begin,
-	struct tracepoint * const *end);
-#else
-static inline
-void tracepoint_update_probe_range(struct tracepoint * const *begin,
-	struct tracepoint * const *end)
-{ }
-#endif /* CONFIG_TRACEPOINTS */
-
 #endif /* _LINUX_TRACEPOINT_H */
 
 /*

trunk/kernel/module.c

@@ -3487,50 +3487,3 @@ void module_layout(struct module *mod,
 }
 EXPORT_SYMBOL(module_layout);
 #endif
-
-#ifdef CONFIG_TRACEPOINTS
-void module_update_tracepoints(void)
-{
-	struct module *mod;
-
-	mutex_lock(&module_mutex);
-	list_for_each_entry(mod, &modules, list)
-		if (!mod->taints)
-			tracepoint_update_probe_range(mod->tracepoints_ptrs,
-				mod->tracepoints_ptrs + mod->num_tracepoints);
-	mutex_unlock(&module_mutex);
-}
-
-/*
- * Returns 0 if current not found.
- * Returns 1 if current found.
- */
-int module_get_iter_tracepoints(struct tracepoint_iter *iter)
-{
-	struct module *iter_mod;
-	int found = 0;
-
-	mutex_lock(&module_mutex);
-	list_for_each_entry(iter_mod, &modules, list) {
-		if (!iter_mod->taints) {
-			/*
-			 * Sorted module list
-			 */
-			if (iter_mod < iter->module)
-				continue;
-			else if (iter_mod > iter->module)
-				iter->tracepoint = NULL;
-			found = tracepoint_get_iter_range(&iter->tracepoint,
-				iter_mod->tracepoints_ptrs,
-				iter_mod->tracepoints_ptrs
-					+ iter_mod->num_tracepoints);
-			if (found) {
-				iter->module = iter_mod;
-				break;
-			}
-		}
-	}
-	mutex_unlock(&module_mutex);
-	return found;
-}
-#endif

trunk/kernel/trace/Makefile

@@ -15,6 +15,8 @@ ifdef CONFIG_TRACING_BRANCHES
 KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING
 endif
 
+CFLAGS_trace_events_filter.o := -I$(src)
+
 #
 # Make the trace clocks available generally: it's infrastructure
 # relied on by ptrace for example:

trunk/kernel/trace/ftrace.c

@@ -3862,6 +3862,14 @@ void ftrace_kill(void)
 	clear_ftrace_function();
 }
 
+/**
+ * Test if ftrace is dead or not.
+ */
+int ftrace_is_dead(void)
+{
+	return ftrace_disabled;
+}
+
 /**
  * register_ftrace_function - register a function for profiling
  * @ops - ops structure that holds the function for profiling.

trunk/kernel/trace/ring_buffer.c

@@ -488,12 +488,14 @@ struct ring_buffer_per_cpu {
 	struct buffer_page		*reader_page;
 	unsigned long			lost_events;
 	unsigned long			last_overrun;
+	local_t				entries_bytes;
 	local_t				commit_overrun;
 	local_t				overrun;
 	local_t				entries;
 	local_t				committing;
 	local_t				commits;
 	unsigned long			read;
+	unsigned long			read_bytes;
 	u64				write_stamp;
 	u64				read_stamp;
 };
@@ -1708,6 +1710,7 @@ rb_handle_head_page(struct ring_buffer_per_cpu *cpu_buffer,
 		 * the counters.
 		 */
 		local_add(entries, &cpu_buffer->overrun);
+		local_sub(BUF_PAGE_SIZE, &cpu_buffer->entries_bytes);
 
 		/*
 		 * The entries will be zeroed out when we move the
@@ -1863,6 +1866,9 @@ rb_reset_tail(struct ring_buffer_per_cpu *cpu_buffer,
 	event = __rb_page_index(tail_page, tail);
 	kmemcheck_annotate_bitfield(event, bitfield);
 
+	/* account for padding bytes */
+	local_add(BUF_PAGE_SIZE - tail, &cpu_buffer->entries_bytes);
+
 	/*
 	 * Save the original length to the meta data.
 	 * This will be used by the reader to add lost event
@@ -2054,6 +2060,9 @@ __rb_reserve_next(struct ring_buffer_per_cpu *cpu_buffer,
 	if (!tail)
 		tail_page->page->time_stamp = ts;
 
+	/* account for these added bytes */
+	local_add(length, &cpu_buffer->entries_bytes);
+
 	return event;
 }
 
@@ -2076,6 +2085,7 @@ rb_try_to_discard(struct ring_buffer_per_cpu *cpu_buffer,
 	if (bpage->page == (void *)addr && rb_page_write(bpage) == old_index) {
 		unsigned long write_mask =
 			local_read(&bpage->write) & ~RB_WRITE_MASK;
+		unsigned long event_length = rb_event_length(event);
 		/*
 		 * This is on the tail page. It is possible that
 		 * a write could come in and move the tail page
@@ -2085,8 +2095,11 @@ rb_try_to_discard(struct ring_buffer_per_cpu *cpu_buffer,
 		old_index += write_mask;
 		new_index += write_mask;
 		index = local_cmpxchg(&bpage->write, old_index, new_index);
-		if (index == old_index)
+		if (index == old_index) {
+			/* update counters */
+			local_sub(event_length, &cpu_buffer->entries_bytes);
 			return 1;
+		}
 	}
 
 	/* could not discard */
@@ -2660,6 +2673,58 @@ rb_num_of_entries(struct ring_buffer_per_cpu *cpu_buffer)
 		(local_read(&cpu_buffer->overrun) + cpu_buffer->read);
 }
 
+/**
+ * ring_buffer_oldest_event_ts - get the oldest event timestamp from the buffer
+ * @buffer: The ring buffer
+ * @cpu: The per CPU buffer to read from.
+ */
+unsigned long ring_buffer_oldest_event_ts(struct ring_buffer *buffer, int cpu)
+{
+	unsigned long flags;
+	struct ring_buffer_per_cpu *cpu_buffer;
+	struct buffer_page *bpage;
+	unsigned long ret;
+
+	if (!cpumask_test_cpu(cpu, buffer->cpumask))
+		return 0;
+
+	cpu_buffer = buffer->buffers[cpu];
+	spin_lock_irqsave(&cpu_buffer->reader_lock, flags);
+	/*
+	 * if the tail is on reader_page, oldest time stamp is on the reader
+	 * page
+	 */
+	if (cpu_buffer->tail_page == cpu_buffer->reader_page)
+		bpage = cpu_buffer->reader_page;
+	else
+		bpage = rb_set_head_page(cpu_buffer);
+	ret = bpage->page->time_stamp;
+	spin_unlock_irqrestore(&cpu_buffer->reader_lock, flags);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(ring_buffer_oldest_event_ts);
+
+/**
+ * ring_buffer_bytes_cpu - get the number of bytes consumed in a cpu buffer
+ * @buffer: The ring buffer
+ * @cpu: The per CPU buffer to read from.
+ */
+unsigned long ring_buffer_bytes_cpu(struct ring_buffer *buffer, int cpu)
+{
+	struct ring_buffer_per_cpu *cpu_buffer;
+	unsigned long ret;
+
+	if (!cpumask_test_cpu(cpu, buffer->cpumask))
+		return 0;
+
+	cpu_buffer = buffer->buffers[cpu];
+	ret = local_read(&cpu_buffer->entries_bytes) - cpu_buffer->read_bytes;
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(ring_buffer_bytes_cpu);
+
 /**
  * ring_buffer_entries_cpu - get the number of entries in a cpu buffer
  * @buffer: The ring buffer
@@ -3527,11 +3592,13 @@ rb_reset_cpu(struct ring_buffer_per_cpu *cpu_buffer)
 	cpu_buffer->reader_page->read = 0;
 
 	local_set(&cpu_buffer->commit_overrun, 0);
+	local_set(&cpu_buffer->entries_bytes, 0);
 	local_set(&cpu_buffer->overrun, 0);
 	local_set(&cpu_buffer->entries, 0);
 	local_set(&cpu_buffer->committing, 0);
 	local_set(&cpu_buffer->commits, 0);
 	cpu_buffer->read = 0;
+	cpu_buffer->read_bytes = 0;
 
 	cpu_buffer->write_stamp = 0;
 	cpu_buffer->read_stamp = 0;
@@ -3918,6 +3985,7 @@ int ring_buffer_read_page(struct ring_buffer *buffer,
 	} else {
 		/* update the entry counter */
 		cpu_buffer->read += rb_page_entries(reader);
+		cpu_buffer->read_bytes += BUF_PAGE_SIZE;
 
 		/* swap the pages */
 		rb_init_page(bpage);