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-rw-r--r--kernel/sysctl.c2
-rw-r--r--kernel/trace/Kconfig2
-rw-r--r--kernel/trace/ftrace.c4
-rw-r--r--kernel/trace/ring_buffer.c28
-rw-r--r--kernel/trace/trace.c485
-rw-r--r--kernel/trace/trace.h19
-rw-r--r--kernel/trace/trace_benchmark.c26
-rw-r--r--kernel/trace/trace_benchmark.h2
-rw-r--r--kernel/trace/trace_branch.c2
-rw-r--r--kernel/trace/trace_entries.h15
-rw-r--r--kernel/trace/trace_events.c83
-rw-r--r--kernel/trace/trace_events_filter.c119
-rw-r--r--kernel/trace/trace_functions_graph.c35
-rw-r--r--kernel/trace/trace_hwlat.c2
-rw-r--r--kernel/trace/trace_irqsoff.c12
-rw-r--r--kernel/trace/trace_kprobe.c47
-rw-r--r--kernel/trace/trace_output.c30
-rw-r--r--kernel/trace/trace_sched_wakeup.c13
-rw-r--r--kernel/tracepoint.c12
19 files changed, 685 insertions, 253 deletions
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 1475d2545b7e..1a292ebcbbb6 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -627,7 +627,7 @@ static struct ctl_table kern_table[] = {
 		.data		= &tracepoint_printk,
 		.maxlen		= sizeof(tracepoint_printk),
 		.mode		= 0644,
-		.proc_handler	= proc_dointvec,
+		.proc_handler	= tracepoint_printk_sysctl,
 	},
 #endif
 #ifdef CONFIG_KEXEC_CORE
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index 2a96b063d659..d5038005eb5d 100644
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig
@@ -70,6 +70,7 @@ config FTRACE_NMI_ENTER
 
 config EVENT_TRACING
 	select CONTEXT_SWITCH_TRACER
+        select GLOB
 	bool
 
 config CONTEXT_SWITCH_TRACER
@@ -133,6 +134,7 @@ config FUNCTION_TRACER
 	select KALLSYMS
 	select GENERIC_TRACER
 	select CONTEXT_SWITCH_TRACER
+        select GLOB
 	help
 	  Enable the kernel to trace every kernel function. This is done
 	  by using a compiler feature to insert a small, 5-byte No-Operation
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 33dd57f53f88..1f0f547c54da 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -3511,6 +3511,10 @@ static int ftrace_match(char *str, struct ftrace_glob *g)
 		    memcmp(str + slen - g->len, g->search, g->len) == 0)
 			matched = 1;
 		break;
+	case MATCH_GLOB:
+		if (glob_match(g->search, str))
+			matched = 1;
+		break;
 	}
 
 	return matched;
diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index 89a2611a1635..a85739efcc30 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -245,7 +245,7 @@ unsigned ring_buffer_event_length(struct ring_buffer_event *event)
 EXPORT_SYMBOL_GPL(ring_buffer_event_length);
 
 /* inline for ring buffer fast paths */
-static void *
+static __always_inline void *
 rb_event_data(struct ring_buffer_event *event)
 {
 	if (event->type_len == RINGBUF_TYPE_TIME_EXTEND)
@@ -1798,48 +1798,48 @@ void ring_buffer_change_overwrite(struct ring_buffer *buffer, int val)
 }
 EXPORT_SYMBOL_GPL(ring_buffer_change_overwrite);
 
-static inline void *
+static __always_inline void *
 __rb_data_page_index(struct buffer_data_page *bpage, unsigned index)
 {
 	return bpage->data + index;
 }
 
-static inline void *__rb_page_index(struct buffer_page *bpage, unsigned index)
+static __always_inline void *__rb_page_index(struct buffer_page *bpage, unsigned index)
 {
 	return bpage->page->data + index;
 }
 
-static inline struct ring_buffer_event *
+static __always_inline struct ring_buffer_event *
 rb_reader_event(struct ring_buffer_per_cpu *cpu_buffer)
 {
 	return __rb_page_index(cpu_buffer->reader_page,
 			       cpu_buffer->reader_page->read);
 }
 
-static inline struct ring_buffer_event *
+static __always_inline struct ring_buffer_event *
 rb_iter_head_event(struct ring_buffer_iter *iter)
 {
 	return __rb_page_index(iter->head_page, iter->head);
 }
 
-static inline unsigned rb_page_commit(struct buffer_page *bpage)
+static __always_inline unsigned rb_page_commit(struct buffer_page *bpage)
 {
 	return local_read(&bpage->page->commit);
 }
 
 /* Size is determined by what has been committed */
-static inline unsigned rb_page_size(struct buffer_page *bpage)
+static __always_inline unsigned rb_page_size(struct buffer_page *bpage)
 {
 	return rb_page_commit(bpage);
 }
 
-static inline unsigned
+static __always_inline unsigned
 rb_commit_index(struct ring_buffer_per_cpu *cpu_buffer)
 {
 	return rb_page_commit(cpu_buffer->commit_page);
 }
 
-static inline unsigned
+static __always_inline unsigned
 rb_event_index(struct ring_buffer_event *event)
 {
 	unsigned long addr = (unsigned long)event;
@@ -2355,7 +2355,7 @@ static void rb_start_commit(struct ring_buffer_per_cpu *cpu_buffer)
 	local_inc(&cpu_buffer->commits);
 }
 
-static void
+static __always_inline void
 rb_set_commit_to_write(struct ring_buffer_per_cpu *cpu_buffer)
 {
 	unsigned long max_count;
@@ -2410,7 +2410,7 @@ rb_set_commit_to_write(struct ring_buffer_per_cpu *cpu_buffer)
 		goto again;
 }
 
-static inline void rb_end_commit(struct ring_buffer_per_cpu *cpu_buffer)
+static __always_inline void rb_end_commit(struct ring_buffer_per_cpu *cpu_buffer)
 {
 	unsigned long commits;
 
@@ -2455,7 +2455,7 @@ static inline void rb_event_discard(struct ring_buffer_event *event)
 		event->time_delta = 1;
 }
 
-static inline bool
+static __always_inline bool
 rb_event_is_commit(struct ring_buffer_per_cpu *cpu_buffer,
 		   struct ring_buffer_event *event)
 {
@@ -2469,7 +2469,7 @@ rb_event_is_commit(struct ring_buffer_per_cpu *cpu_buffer,
 		rb_commit_index(cpu_buffer) == index;
 }
 
-static void
+static __always_inline void
 rb_update_write_stamp(struct ring_buffer_per_cpu *cpu_buffer,
 		      struct ring_buffer_event *event)
 {
@@ -2702,7 +2702,7 @@ __rb_reserve_next(struct ring_buffer_per_cpu *cpu_buffer,
 	return event;
 }
 
-static struct ring_buffer_event *
+static __always_inline struct ring_buffer_event *
 rb_reserve_next_event(struct ring_buffer *buffer,
 		      struct ring_buffer_per_cpu *cpu_buffer,
 		      unsigned long length)
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 54d5270a5042..66f829c47bec 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -40,6 +40,7 @@
 #include <linux/poll.h>
 #include <linux/nmi.h>
 #include <linux/fs.h>
+#include <linux/trace.h>
 #include <linux/sched/rt.h>
 
 #include "trace.h"
@@ -68,6 +69,7 @@ bool __read_mostly tracing_selftest_disabled;
 /* Pipe tracepoints to printk */
 struct trace_iterator *tracepoint_print_iter;
 int tracepoint_printk;
+static DEFINE_STATIC_KEY_FALSE(tracepoint_printk_key);
 
 /* For tracers that don't implement custom flags */
 static struct tracer_opt dummy_tracer_opt[] = {
@@ -738,6 +740,31 @@ static inline void ftrace_trace_stack(struct trace_array *tr,
 
 #endif
 
+static __always_inline void
+trace_event_setup(struct ring_buffer_event *event,
+		  int type, unsigned long flags, int pc)
+{
+	struct trace_entry *ent = ring_buffer_event_data(event);
+
+	tracing_generic_entry_update(ent, flags, pc);
+	ent->type = type;
+}
+
+static __always_inline struct ring_buffer_event *
+__trace_buffer_lock_reserve(struct ring_buffer *buffer,
+			  int type,
+			  unsigned long len,
+			  unsigned long flags, int pc)
+{
+	struct ring_buffer_event *event;
+
+	event = ring_buffer_lock_reserve(buffer, len);
+	if (event != NULL)
+		trace_event_setup(event, type, flags, pc);
+
+	return event;
+}
+
 static void tracer_tracing_on(struct trace_array *tr)
 {
 	if (tr->trace_buffer.buffer)
@@ -767,6 +794,22 @@ void tracing_on(void)
 }
 EXPORT_SYMBOL_GPL(tracing_on);
 
+
+static __always_inline void
+__buffer_unlock_commit(struct ring_buffer *buffer, struct ring_buffer_event *event)
+{
+	__this_cpu_write(trace_cmdline_save, true);
+
+	/* If this is the temp buffer, we need to commit fully */
+	if (this_cpu_read(trace_buffered_event) == event) {
+		/* Length is in event->array[0] */
+		ring_buffer_write(buffer, event->array[0], &event->array[1]);
+		/* Release the temp buffer */
+		this_cpu_dec(trace_buffered_event_cnt);
+	} else
+		ring_buffer_unlock_commit(buffer, event);
+}
+
 /**
  * __trace_puts - write a constant string into the trace buffer.
  * @ip:	   The address of the caller
@@ -794,8 +837,8 @@ int __trace_puts(unsigned long ip, const char *str, int size)
 
 	local_save_flags(irq_flags);
 	buffer = global_trace.trace_buffer.buffer;
-	event = trace_buffer_lock_reserve(buffer, TRACE_PRINT, alloc, 
-					  irq_flags, pc);
+	event = __trace_buffer_lock_reserve(buffer, TRACE_PRINT, alloc, 
+					    irq_flags, pc);
 	if (!event)
 		return 0;
 
@@ -842,8 +885,8 @@ int __trace_bputs(unsigned long ip, const char *str)
 
 	local_save_flags(irq_flags);
 	buffer = global_trace.trace_buffer.buffer;
-	event = trace_buffer_lock_reserve(buffer, TRACE_BPUTS, size,
-					  irq_flags, pc);
+	event = __trace_buffer_lock_reserve(buffer, TRACE_BPUTS, size,
+					    irq_flags, pc);
 	if (!event)
 		return 0;
 
@@ -1907,35 +1950,19 @@ tracing_generic_entry_update(struct trace_entry *entry, unsigned long flags,
 #endif
 		((pc & NMI_MASK    ) ? TRACE_FLAG_NMI     : 0) |
 		((pc & HARDIRQ_MASK) ? TRACE_FLAG_HARDIRQ : 0) |
-		((pc & SOFTIRQ_MASK) ? TRACE_FLAG_SOFTIRQ : 0) |
+		((pc & SOFTIRQ_OFFSET) ? TRACE_FLAG_SOFTIRQ : 0) |
 		(tif_need_resched() ? TRACE_FLAG_NEED_RESCHED : 0) |
 		(test_preempt_need_resched() ? TRACE_FLAG_PREEMPT_RESCHED : 0);
 }
 EXPORT_SYMBOL_GPL(tracing_generic_entry_update);
 
-static __always_inline void
-trace_event_setup(struct ring_buffer_event *event,
-		  int type, unsigned long flags, int pc)
-{
-	struct trace_entry *ent = ring_buffer_event_data(event);
-
-	tracing_generic_entry_update(ent, flags, pc);
-	ent->type = type;
-}
-
 struct ring_buffer_event *
 trace_buffer_lock_reserve(struct ring_buffer *buffer,
 			  int type,
 			  unsigned long len,
 			  unsigned long flags, int pc)
 {
-	struct ring_buffer_event *event;
-
-	event = ring_buffer_lock_reserve(buffer, len);
-	if (event != NULL)
-		trace_event_setup(event, type, flags, pc);
-
-	return event;
+	return __trace_buffer_lock_reserve(buffer, type, len, flags, pc);
 }
 
 DEFINE_PER_CPU(struct ring_buffer_event *, trace_buffered_event);
@@ -2049,21 +2076,6 @@ void trace_buffered_event_disable(void)
 	preempt_enable();
 }
 
-void
-__buffer_unlock_commit(struct ring_buffer *buffer, struct ring_buffer_event *event)
-{
-	__this_cpu_write(trace_cmdline_save, true);
-
-	/* If this is the temp buffer, we need to commit fully */
-	if (this_cpu_read(trace_buffered_event) == event) {
-		/* Length is in event->array[0] */
-		ring_buffer_write(buffer, event->array[0], &event->array[1]);
-		/* Release the temp buffer */
-		this_cpu_dec(trace_buffered_event_cnt);
-	} else
-		ring_buffer_unlock_commit(buffer, event);
-}
-
 static struct ring_buffer *temp_buffer;
 
 struct ring_buffer_event *
@@ -2090,8 +2102,8 @@ trace_event_buffer_lock_reserve(struct ring_buffer **current_rb,
 		this_cpu_dec(trace_buffered_event_cnt);
 	}
 
-	entry = trace_buffer_lock_reserve(*current_rb,
-					 type, len, flags, pc);
+	entry = __trace_buffer_lock_reserve(*current_rb,
+					    type, len, flags, pc);
 	/*
 	 * If tracing is off, but we have triggers enabled
 	 * we still need to look at the event data. Use the temp_buffer
@@ -2100,13 +2112,88 @@ trace_event_buffer_lock_reserve(struct ring_buffer **current_rb,
 	 */
 	if (!entry && trace_file->flags & EVENT_FILE_FL_TRIGGER_COND) {
 		*current_rb = temp_buffer;
-		entry = trace_buffer_lock_reserve(*current_rb,
-						  type, len, flags, pc);
+		entry = __trace_buffer_lock_reserve(*current_rb,
+						    type, len, flags, pc);
 	}
 	return entry;
 }
 EXPORT_SYMBOL_GPL(trace_event_buffer_lock_reserve);
 
+static DEFINE_SPINLOCK(tracepoint_iter_lock);
+static DEFINE_MUTEX(tracepoint_printk_mutex);
+
+static void output_printk(struct trace_event_buffer *fbuffer)
+{
+	struct trace_event_call *event_call;
+	struct trace_event *event;
+	unsigned long flags;
+	struct trace_iterator *iter = tracepoint_print_iter;
+
+	/* We should never get here if iter is NULL */
+	if (WARN_ON_ONCE(!iter))
+		return;
+
+	event_call = fbuffer->trace_file->event_call;
+	if (!event_call || !event_call->event.funcs ||
+	    !event_call->event.funcs->trace)
+		return;
+
+	event = &fbuffer->trace_file->event_call->event;
+
+	spin_lock_irqsave(&tracepoint_iter_lock, flags);
+	trace_seq_init(&iter->seq);
+	iter->ent = fbuffer->entry;
+	event_call->event.funcs->trace(iter, 0, event);
+	trace_seq_putc(&iter->seq, 0);
+	printk("%s", iter->seq.buffer);
+
+	spin_unlock_irqrestore(&tracepoint_iter_lock, flags);
+}
+
+int tracepoint_printk_sysctl(struct ctl_table *table, int write,
+			     void __user *buffer, size_t *lenp,
+			     loff_t *ppos)
+{
+	int save_tracepoint_printk;
+	int ret;
+
+	mutex_lock(&tracepoint_printk_mutex);
+	save_tracepoint_printk = tracepoint_printk;
+
+	ret = proc_dointvec(table, write, buffer, lenp, ppos);
+
+	/*
+	 * This will force exiting early, as tracepoint_printk
+	 * is always zero when tracepoint_printk_iter is not allocated
+	 */
+	if (!tracepoint_print_iter)
+		tracepoint_printk = 0;
+
+	if (save_tracepoint_printk == tracepoint_printk)
+		goto out;
+
+	if (tracepoint_printk)
+		static_key_enable(&tracepoint_printk_key.key);
+	else
+		static_key_disable(&tracepoint_printk_key.key);
+
+ out:
+	mutex_unlock(&tracepoint_printk_mutex);
+
+	return ret;
+}
+
+void trace_event_buffer_commit(struct trace_event_buffer *fbuffer)
+{
+	if (static_key_false(&tracepoint_printk_key.key))
+		output_printk(fbuffer);
+
+	event_trigger_unlock_commit(fbuffer->trace_file, fbuffer->buffer,
+				    fbuffer->event, fbuffer->entry,
+				    fbuffer->flags, fbuffer->pc);
+}
+EXPORT_SYMBOL_GPL(trace_event_buffer_commit);
+
 void trace_buffer_unlock_commit_regs(struct trace_array *tr,
 				     struct ring_buffer *buffer,
 				     struct ring_buffer_event *event,
@@ -2129,6 +2216,139 @@ void trace_buffer_unlock_commit_regs(struct trace_array *tr,
 	ftrace_trace_userstack(buffer, flags, pc);
 }
 
+/*
+ * Similar to trace_buffer_unlock_commit_regs() but do not dump stack.
+ */
+void
+trace_buffer_unlock_commit_nostack(struct ring_buffer *buffer,
+				   struct ring_buffer_event *event)
+{
+	__buffer_unlock_commit(buffer, event);
+}
+
+static void
+trace_process_export(struct trace_export *export,
+	       struct ring_buffer_event *event)
+{
+	struct trace_entry *entry;
+	unsigned int size = 0;
+
+	entry = ring_buffer_event_data(event);
+	size = ring_buffer_event_length(event);
+	export->write(entry, size);
+}
+
+static DEFINE_MUTEX(ftrace_export_lock);
+
+static struct trace_export __rcu *ftrace_exports_list __read_mostly;
+
+static DEFINE_STATIC_KEY_FALSE(ftrace_exports_enabled);
+
+static inline void ftrace_exports_enable(void)
+{
+	static_branch_enable(&ftrace_exports_enabled);
+}
+
+static inline void ftrace_exports_disable(void)
+{
+	static_branch_disable(&ftrace_exports_enabled);
+}
+
+void ftrace_exports(struct ring_buffer_event *event)
+{
+	struct trace_export *export;
+
+	preempt_disable_notrace();
+
+	export = rcu_dereference_raw_notrace(ftrace_exports_list);
+	while (export) {
+		trace_process_export(export, event);
+		export = rcu_dereference_raw_notrace(export->next);
+	}
+
+	preempt_enable_notrace();
+}
+
+static inline void
+add_trace_export(struct trace_export **list, struct trace_export *export)
+{
+	rcu_assign_pointer(export->next, *list);
+	/*
+	 * We are entering export into the list but another
+	 * CPU might be walking that list. We need to make sure
+	 * the export->next pointer is valid before another CPU sees
+	 * the export pointer included into the list.
+	 */
+	rcu_assign_pointer(*list, export);
+}
+
+static inline int
+rm_trace_export(struct trace_export **list, struct trace_export *export)
+{
+	struct trace_export **p;
+
+	for (p = list; *p != NULL; p = &(*p)->next)
+		if (*p == export)
+			break;
+
+	if (*p != export)
+		return -1;
+
+	rcu_assign_pointer(*p, (*p)->next);
+
+	return 0;
+}
+
+static inline void
+add_ftrace_export(struct trace_export **list, struct trace_export *export)
+{
+	if (*list == NULL)
+		ftrace_exports_enable();
+
+	add_trace_export(list, export);
+}
+
+static inline int
+rm_ftrace_export(struct trace_export **list, struct trace_export *export)
+{
+	int ret;
+
+	ret = rm_trace_export(list, export);
+	if (*list == NULL)
+		ftrace_exports_disable();
+
+	return ret;
+}
+
+int register_ftrace_export(struct trace_export *export)
+{
+	if (WARN_ON_ONCE(!export->write))
+		return -1;
+
+	mutex_lock(&ftrace_export_lock);
+
+	add_ftrace_export(&ftrace_exports_list, export);
+
+	mutex_unlock(&ftrace_export_lock);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(register_ftrace_export);
+
+int unregister_ftrace_export(struct trace_export *export)
+{
+	int ret;
+
+	mutex_lock(&ftrace_export_lock);
+
+	ret = rm_ftrace_export(&ftrace_exports_list, export);
+
+	mutex_unlock(&ftrace_export_lock);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(unregister_ftrace_export);
+
 void
 trace_function(struct trace_array *tr,
 	       unsigned long ip, unsigned long parent_ip, unsigned long flags,
@@ -2139,16 +2359,19 @@ trace_function(struct trace_array *tr,
 	struct ring_buffer_event *event;
 	struct ftrace_entry *entry;
 
-	event = trace_buffer_lock_reserve(buffer, TRACE_FN, sizeof(*entry),
-					  flags, pc);
+	event = __trace_buffer_lock_reserve(buffer, TRACE_FN, sizeof(*entry),
+					    flags, pc);
 	if (!event)
 		return;
 	entry	= ring_buffer_event_data(event);
 	entry->ip			= ip;
 	entry->parent_ip		= parent_ip;
 
-	if (!call_filter_check_discard(call, entry, buffer, event))
+	if (!call_filter_check_discard(call, entry, buffer, event)) {
+		if (static_branch_unlikely(&ftrace_exports_enabled))
+			ftrace_exports(event);
 		__buffer_unlock_commit(buffer, event);
+	}
 }
 
 #ifdef CONFIG_STACKTRACE
@@ -2216,8 +2439,8 @@ static void __ftrace_trace_stack(struct ring_buffer *buffer,
 
 	size *= sizeof(unsigned long);
 
-	event = trace_buffer_lock_reserve(buffer, TRACE_STACK,
-					  sizeof(*entry) + size, flags, pc);
+	event = __trace_buffer_lock_reserve(buffer, TRACE_STACK,
+					    sizeof(*entry) + size, flags, pc);
 	if (!event)
 		goto out;
 	entry = ring_buffer_event_data(event);
@@ -2318,8 +2541,8 @@ ftrace_trace_userstack(struct ring_buffer *buffer, unsigned long flags, int pc)
 
 	__this_cpu_inc(user_stack_count);
 
-	event = trace_buffer_lock_reserve(buffer, TRACE_USER_STACK,
-					  sizeof(*entry), flags, pc);
+	event = __trace_buffer_lock_reserve(buffer, TRACE_USER_STACK,
+					    sizeof(*entry), flags, pc);
 	if (!event)
 		goto out_drop_count;
 	entry	= ring_buffer_event_data(event);
@@ -2489,8 +2712,8 @@ int trace_vbprintk(unsigned long ip, const char *fmt, va_list args)
 	local_save_flags(flags);
 	size = sizeof(*entry) + sizeof(u32) * len;
 	buffer = tr->trace_buffer.buffer;
-	event = trace_buffer_lock_reserve(buffer, TRACE_BPRINT, size,
-					  flags, pc);
+	event = __trace_buffer_lock_reserve(buffer, TRACE_BPRINT, size,
+					    flags, pc);
 	if (!event)
 		goto out;
 	entry = ring_buffer_event_data(event);
@@ -2545,8 +2768,8 @@ __trace_array_vprintk(struct ring_buffer *buffer,
 
 	local_save_flags(flags);
 	size = sizeof(*entry) + len + 1;
-	event = trace_buffer_lock_reserve(buffer, TRACE_PRINT, size,
-					  flags, pc);
+	event = __trace_buffer_lock_reserve(buffer, TRACE_PRINT, size,
+					    flags, pc);
 	if (!event)
 		goto out;
 	entry = ring_buffer_event_data(event);
@@ -4055,6 +4278,7 @@ static const char readme_msg[] =
 	"     x86-tsc:   TSC cycle counter\n"
 #endif
 	"\n  trace_marker\t\t- Writes into this file writes into the kernel buffer\n"
+	"\n  trace_marker_raw\t\t- Writes into this file writes binary data into the kernel buffer\n"
 	"  tracing_cpumask\t- Limit which CPUs to trace\n"
 	"  instances\t\t- Make sub-buffers with: mkdir instances/foo\n"
 	"\t\t\t  Remove sub-buffer with rmdir\n"
@@ -4066,7 +4290,7 @@ static const char readme_msg[] =
 	"\n  available_filter_functions - list of functions that can be filtered on\n"
 	"  set_ftrace_filter\t- echo function name in here to only trace these\n"
 	"\t\t\t  functions\n"
-	"\t     accepts: func_full_name, *func_end, func_begin*, *func_middle*\n"
+	"\t     accepts: func_full_name or glob-matching-pattern\n"
 	"\t     modules: Can select a group via module\n"
 	"\t      Format: :mod:<module-name>\n"
 	"\t     example: echo :mod:ext3 > set_ftrace_filter\n"
@@ -5519,21 +5743,18 @@ static ssize_t
 tracing_mark_write(struct file *filp, const char __user *ubuf,
 					size_t cnt, loff_t *fpos)
 {
-	unsigned long addr = (unsigned long)ubuf;
 	struct trace_array *tr = filp->private_data;
 	struct ring_buffer_event *event;
 	struct ring_buffer *buffer;
 	struct print_entry *entry;
 	unsigned long irq_flags;
-	struct page *pages[2];
-	void *map_page[2];
-	int nr_pages = 1;
+	const char faulted[] = "<faulted>";
 	ssize_t written;
-	int offset;
 	int size;
 	int len;
-	int ret;
-	int i;
+
+/* Used in tracing_mark_raw_write() as well */
+#define FAULTED_SIZE (sizeof(faulted) - 1) /* '\0' is already accounted for */
 
 	if (tracing_disabled)
 		return -EINVAL;
@@ -5544,60 +5765,33 @@ tracing_mark_write(struct file *filp, const char __user *ubuf,
 	if (cnt > TRACE_BUF_SIZE)
 		cnt = TRACE_BUF_SIZE;
 
-	/*
-	 * Userspace is injecting traces into the kernel trace buffer.
-	 * We want to be as non intrusive as possible.
-	 * To do so, we do not want to allocate any special buffers
-	 * or take any locks, but instead write the userspace data
-	 * straight into the ring buffer.
-	 *
-	 * First we need to pin the userspace buffer into memory,
-	 * which, most likely it is, because it just referenced it.
-	 * But there's no guarantee that it is. By using get_user_pages_fast()
-	 * and kmap_atomic/kunmap_atomic() we can get access to the
-	 * pages directly. We then write the data directly into the
-	 * ring buffer.
-	 */
 	BUILD_BUG_ON(TRACE_BUF_SIZE >= PAGE_SIZE);
 
-	/* check if we cross pages */
-	if ((addr & PAGE_MASK) != ((addr + cnt) & PAGE_MASK))
-		nr_pages = 2;
-
-	offset = addr & (PAGE_SIZE - 1);
-	addr &= PAGE_MASK;
-
-	ret = get_user_pages_fast(addr, nr_pages, 0, pages);
-	if (ret < nr_pages) {
-		while (--ret >= 0)
-			put_page(pages[ret]);
-		written = -EFAULT;
-		goto out;
-	}
+	local_save_flags(irq_flags);
+	size = sizeof(*entry) + cnt + 2; /* add '\0' and possible '\n' */
 
-	for (i = 0; i < nr_pages; i++)
-		map_page[i] = kmap_atomic(pages[i]);
+	/* If less than "<faulted>", then make sure we can still add that */
+	if (cnt < FAULTED_SIZE)
+		size += FAULTED_SIZE - cnt;
 
-	local_save_flags(irq_flags);
-	size = sizeof(*entry) + cnt + 2; /* possible \n added */
 	buffer = tr->trace_buffer.buffer;
-	event = trace_buffer_lock_reserve(buffer, TRACE_PRINT, size,
-					  irq_flags, preempt_count());
-	if (!event) {
+	event = __trace_buffer_lock_reserve(buffer, TRACE_PRINT, size,
+					    irq_flags, preempt_count());
+	if (unlikely(!event))
 		/* Ring buffer disabled, return as if not open for write */
-		written = -EBADF;
-		goto out_unlock;
-	}
+		return -EBADF;
 
 	entry = ring_buffer_event_data(event);
 	entry->ip = _THIS_IP_;
 
-	if (nr_pages == 2) {
-		len = PAGE_SIZE - offset;
-		memcpy(&entry->buf, map_page[0] + offset, len);
-		memcpy(&entry->buf[len], map_page[1], cnt - len);
+	len = __copy_from_user_inatomic(&entry->buf, ubuf, cnt);
+	if (len) {
+		memcpy(&entry->buf, faulted, FAULTED_SIZE);
+		cnt = FAULTED_SIZE;
+		written = -EFAULT;
 	} else
-		memcpy(&entry->buf, map_page[0] + offset, cnt);
+		written = cnt;
+	len = cnt;
 
 	if (entry->buf[cnt - 1] != '\n') {
 		entry->buf[cnt] = '\n';
@@ -5607,16 +5801,73 @@ tracing_mark_write(struct file *filp, const char __user *ubuf,
 
 	__buffer_unlock_commit(buffer, event);
 
-	written = cnt;
+	if (written > 0)
+		*fpos += written;
 
-	*fpos += written;
+	return written;
+}
+
+/* Limit it for now to 3K (including tag) */
+#define RAW_DATA_MAX_SIZE (1024*3)
+
+static ssize_t
+tracing_mark_raw_write(struct file *filp, const char __user *ubuf,
+					size_t cnt, loff_t *fpos)
+{
+	struct trace_array *tr = filp->private_data;
+	struct ring_buffer_event *event;
+	struct ring_buffer *buffer;
+	struct raw_data_entry *entry;
+	const char faulted[] = "<faulted>";
+	unsigned long irq_flags;
+	ssize_t written;
+	int size;
+	int len;
+
+#define FAULT_SIZE_ID (FAULTED_SIZE + sizeof(int))
+
+	if (tracing_disabled)
+		return -EINVAL;
+
+	if (!(tr->trace_flags & TRACE_ITER_MARKERS))
+		return -EINVAL;
+
+	/* The marker must at least have a tag id */
+	if (cnt < sizeof(unsigned int) || cnt > RAW_DATA_MAX_SIZE)
+		return -EINVAL;
+
+	if (cnt > TRACE_BUF_SIZE)
+		cnt = TRACE_BUF_SIZE;
+
+	BUILD_BUG_ON(TRACE_BUF_SIZE >= PAGE_SIZE);
+
+	local_save_flags(irq_flags);
+	size = sizeof(*entry) + cnt;
+	if (cnt < FAULT_SIZE_ID)
+		size += FAULT_SIZE_ID - cnt;
+
+	buffer = tr->trace_buffer.buffer;
+	event = __trace_buffer_lock_reserve(buffer, TRACE_RAW_DATA, size,
+					    irq_flags, preempt_count());
+	if (!event)
+		/* Ring buffer disabled, return as if not open for write */
+		return -EBADF;
+
+	entry = ring_buffer_event_data(event);
+
+	len = __copy_from_user_inatomic(&entry->id, ubuf, cnt);
+	if (len) {
+		entry->id = -1;
+		memcpy(&entry->buf, faulted, FAULTED_SIZE);
+		written = -EFAULT;
+	} else
+		written = cnt;
+
+	__buffer_unlock_commit(buffer, event);
+
+	if (written > 0)
+		*fpos += written;
 
- out_unlock:
-	for (i = nr_pages - 1; i >= 0; i--) {
-		kunmap_atomic(map_page[i]);
-		put_page(pages[i]);
-	}
- out:
 	return written;
 }
 
@@ -5946,6 +6197,13 @@ static const struct file_operations tracing_mark_fops = {
 	.release	= tracing_release_generic_tr,
 };
 
+static const struct file_operations tracing_mark_raw_fops = {
+	.open		= tracing_open_generic_tr,
+	.write		= tracing_mark_raw_write,
+	.llseek		= generic_file_llseek,
+	.release	= tracing_release_generic_tr,
+};
+
 static const struct file_operations trace_clock_fops = {
 	.open		= tracing_clock_open,
 	.read		= seq_read,
@@ -7215,6 +7473,9 @@ init_tracer_tracefs(struct trace_array *tr, struct dentry *d_tracer)
 	trace_create_file("trace_marker", 0220, d_tracer,
 			  tr, &tracing_mark_fops);
 
+	trace_create_file("trace_marker_raw", 0220, d_tracer,
+			  tr, &tracing_mark_raw_fops);
+
 	trace_create_file("trace_clock", 0644, d_tracer, tr,
 			  &trace_clock_fops);
 
@@ -7752,6 +8013,8 @@ void __init trace_init(void)
 			kmalloc(sizeof(*tracepoint_print_iter), GFP_KERNEL);
 		if (WARN_ON(!tracepoint_print_iter))
 			tracepoint_printk = 0;
+		else
+			static_key_enable(&tracepoint_printk_key.key);
 	}
 	tracer_alloc_buffers();
 	trace_event_init();
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index fd24b1f9ac43..c2234494f40c 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -15,6 +15,7 @@
 #include <linux/trace_events.h>
 #include <linux/compiler.h>
 #include <linux/trace_seq.h>
+#include <linux/glob.h>
 
 #ifdef CONFIG_FTRACE_SYSCALLS
 #include <asm/unistd.h>		/* For NR_SYSCALLS	     */
@@ -39,6 +40,7 @@ enum trace_type {
 	TRACE_BLK,
 	TRACE_BPUTS,
 	TRACE_HWLAT,
+	TRACE_RAW_DATA,
 
 	__TRACE_LAST_TYPE,
 };
@@ -330,6 +332,7 @@ extern void __ftrace_bad_type(void);
 		IF_ASSIGN(var, ent, struct bprint_entry, TRACE_BPRINT);	\
 		IF_ASSIGN(var, ent, struct bputs_entry, TRACE_BPUTS);	\
 		IF_ASSIGN(var, ent, struct hwlat_entry, TRACE_HWLAT);	\
+		IF_ASSIGN(var, ent, struct raw_data_entry, TRACE_RAW_DATA);\
 		IF_ASSIGN(var, ent, struct trace_mmiotrace_rw,		\
 			  TRACE_MMIO_RW);				\
 		IF_ASSIGN(var, ent, struct trace_mmiotrace_map,		\
@@ -599,8 +602,8 @@ struct trace_entry *tracing_get_trace_entry(struct trace_array *tr,
 struct trace_entry *trace_find_next_entry(struct trace_iterator *iter,
 					  int *ent_cpu, u64 *ent_ts);
 
-void __buffer_unlock_commit(struct ring_buffer *buffer,
-			    struct ring_buffer_event *event);
+void trace_buffer_unlock_commit_nostack(struct ring_buffer *buffer,
+					struct ring_buffer_event *event);
 
 int trace_empty(struct trace_iterator *iter);
 
@@ -843,6 +846,17 @@ static inline int ftrace_graph_notrace_addr(unsigned long addr)
 	return 0;
 }
 #endif /* CONFIG_DYNAMIC_FTRACE */
+
+extern unsigned int fgraph_max_depth;
+
+static inline bool ftrace_graph_ignore_func(struct ftrace_graph_ent *trace)
+{
+	/* trace it when it is-nested-in or is a function enabled. */
+	return !(trace->depth || ftrace_graph_addr(trace->func)) ||
+		(trace->depth < 0) ||
+		(fgraph_max_depth && trace->depth >= fgraph_max_depth);
+}
+
 #else /* CONFIG_FUNCTION_GRAPH_TRACER */
 static inline enum print_line_t
 print_graph_function_flags(struct trace_iterator *iter, u32 flags)
@@ -1257,6 +1271,7 @@ enum regex_type {
 	MATCH_FRONT_ONLY,
 	MATCH_MIDDLE_ONLY,
 	MATCH_END_ONLY,
+	MATCH_GLOB,
 };
 
 struct regex {
diff --git a/kernel/trace/trace_benchmark.c b/kernel/trace/trace_benchmark.c
index 0f109c4130d3..e3b488825ae3 100644
--- a/kernel/trace/trace_benchmark.c
+++ b/kernel/trace/trace_benchmark.c
@@ -21,6 +21,8 @@ static u64 bm_stddev;
 static unsigned int bm_avg;
 static unsigned int bm_std;
 
+static bool ok_to_run;
+
 /*
  * This gets called in a loop recording the time it took to write
  * the tracepoint. What it writes is the time statistics of the last
@@ -164,11 +166,21 @@ static int benchmark_event_kthread(void *arg)
  * When the benchmark tracepoint is enabled, it calls this
  * function and the thread that calls the tracepoint is created.
  */
-void trace_benchmark_reg(void)
+int trace_benchmark_reg(void)
 {
+	if (!ok_to_run) {
+		pr_warning("trace benchmark cannot be started via kernel command line\n");
+		return -EBUSY;
+	}
+
 	bm_event_thread = kthread_run(benchmark_event_kthread,
 				      NULL, "event_benchmark");
-	WARN_ON(!bm_event_thread);
+	if (!bm_event_thread) {
+		pr_warning("trace benchmark failed to create kernel thread\n");
+		return -ENOMEM;
+	}
+
+	return 0;
 }
 
 /*
@@ -182,6 +194,7 @@ void trace_benchmark_unreg(void)
 		return;
 
 	kthread_stop(bm_event_thread);
+	bm_event_thread = NULL;
 
 	strcpy(bm_str, "START");
 	bm_total = 0;
@@ -196,3 +209,12 @@ void trace_benchmark_unreg(void)
 	bm_avg = 0;
 	bm_stddev = 0;
 }
+
+static __init int ok_to_run_trace_benchmark(void)
+{
+	ok_to_run = true;
+
+	return 0;
+}
+
+early_initcall(ok_to_run_trace_benchmark);
diff --git a/kernel/trace/trace_benchmark.h b/kernel/trace/trace_benchmark.h
index 3c1df1df4e29..ebdbfc2f2a64 100644
--- a/kernel/trace/trace_benchmark.h
+++ b/kernel/trace/trace_benchmark.h
@@ -6,7 +6,7 @@
 
 #include <linux/tracepoint.h>
 
-extern void trace_benchmark_reg(void);
+extern int trace_benchmark_reg(void);
 extern void trace_benchmark_unreg(void);
 
 #define BENCHMARK_EVENT_STRLEN		128
diff --git a/kernel/trace/trace_branch.c b/kernel/trace/trace_branch.c
index 3a2a73716a5b..75489de546b6 100644
--- a/kernel/trace/trace_branch.c
+++ b/kernel/trace/trace_branch.c
@@ -81,7 +81,7 @@ probe_likely_condition(struct ftrace_branch_data *f, int val, int expect)
 	entry->correct = val == expect;
 
 	if (!call_filter_check_discard(call, entry, buffer, event))
-		__buffer_unlock_commit(buffer, event);
+		trace_buffer_unlock_commit_nostack(buffer, event);
 
  out:
 	current->trace_recursion &= ~TRACE_BRANCH_BIT;
diff --git a/kernel/trace/trace_entries.h b/kernel/trace/trace_entries.h
index d1cc37e78f99..eb7396b7e7c3 100644
--- a/kernel/trace/trace_entries.h
+++ b/kernel/trace/trace_entries.h
@@ -244,6 +244,21 @@ FTRACE_ENTRY(print, print_entry,
 	FILTER_OTHER
 );
 
+FTRACE_ENTRY(raw_data, raw_data_entry,
+
+	TRACE_RAW_DATA,
+
+	F_STRUCT(
+		__field(	unsigned int,	id	)
+		__dynamic_array(	char,	buf	)
+	),
+
+	F_printk("id:%04x %08x",
+		 __entry->id, (int)__entry->buf[0]),
+
+	FILTER_OTHER
+);
+
 FTRACE_ENTRY(bputs, bputs_entry,
 
 	TRACE_BPUTS,
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index 03c0a48c3ac4..93116549a284 100644
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -283,46 +283,6 @@ void *trace_event_buffer_reserve(struct trace_event_buffer *fbuffer,
 }
 EXPORT_SYMBOL_GPL(trace_event_buffer_reserve);
 
-static DEFINE_SPINLOCK(tracepoint_iter_lock);
-
-static void output_printk(struct trace_event_buffer *fbuffer)
-{
-	struct trace_event_call *event_call;
-	struct trace_event *event;
-	unsigned long flags;
-	struct trace_iterator *iter = tracepoint_print_iter;
-
-	if (!iter)
-		return;
-
-	event_call = fbuffer->trace_file->event_call;
-	if (!event_call || !event_call->event.funcs ||
-	    !event_call->event.funcs->trace)
-		return;
-
-	event = &fbuffer->trace_file->event_call->event;
-
-	spin_lock_irqsave(&tracepoint_iter_lock, flags);
-	trace_seq_init(&iter->seq);
-	iter->ent = fbuffer->entry;
-	event_call->event.funcs->trace(iter, 0, event);
-	trace_seq_putc(&iter->seq, 0);
-	printk("%s", iter->seq.buffer);
-
-	spin_unlock_irqrestore(&tracepoint_iter_lock, flags);
-}
-
-void trace_event_buffer_commit(struct trace_event_buffer *fbuffer)
-{
-	if (tracepoint_printk)
-		output_printk(fbuffer);
-
-	event_trigger_unlock_commit(fbuffer->trace_file, fbuffer->buffer,
-				    fbuffer->event, fbuffer->entry,
-				    fbuffer->flags, fbuffer->pc);
-}
-EXPORT_SYMBOL_GPL(trace_event_buffer_commit);
-
 int trace_event_reg(struct trace_event_call *call,
 		    enum trace_reg type, void *data)
 {
@@ -742,6 +702,7 @@ __ftrace_set_clr_event_nolock(struct trace_array *tr, const char *match,
 	struct trace_event_call *call;
 	const char *name;
 	int ret = -EINVAL;
+	int eret = 0;
 
 	list_for_each_entry(file, &tr->events, list) {
 
@@ -765,9 +726,17 @@ __ftrace_set_clr_event_nolock(struct trace_array *tr, const char *match,
 		if (event && strcmp(event, name) != 0)
 			continue;
 
-		ftrace_event_enable_disable(file, set);
+		ret = ftrace_event_enable_disable(file, set);
 
-		ret = 0;
+		/*
+		 * Save the first error and return that. Some events
+		 * may still have been enabled, but let the user
+		 * know that something went wrong.
+		 */
+		if (ret && !eret)
+			eret = ret;
+
+		ret = eret;
 	}
 
 	return ret;
@@ -2843,20 +2812,32 @@ create_event_toplevel_files(struct dentry *parent, struct trace_array *tr)
 		return -ENOMEM;
 	}
 
+	entry = trace_create_file("enable", 0644, d_events,
+				  tr, &ftrace_tr_enable_fops);
+	if (!entry) {
+		pr_warn("Could not create tracefs 'enable' entry\n");
+		return -ENOMEM;
+	}
+
+	/* There are not as crucial, just warn if they are not created */
+
 	entry = tracefs_create_file("set_event_pid", 0644, parent,
 				    tr, &ftrace_set_event_pid_fops);
+	if (!entry)
+		pr_warn("Could not create tracefs 'set_event_pid' entry\n");
 
 	/* ring buffer internal formats */
-	trace_create_file("header_page", 0444, d_events,
-			  ring_buffer_print_page_header,
-			  &ftrace_show_header_fops);
-
-	trace_create_file("header_event", 0444, d_events,
-			  ring_buffer_print_entry_header,
-			  &ftrace_show_header_fops);
+	entry = trace_create_file("header_page", 0444, d_events,
+				  ring_buffer_print_page_header,
+				  &ftrace_show_header_fops);
+	if (!entry)
+		pr_warn("Could not create tracefs 'header_page' entry\n");
 
-	trace_create_file("enable", 0644, d_events,
-			  tr, &ftrace_tr_enable_fops);
+	entry = trace_create_file("header_event", 0444, d_events,
+				  ring_buffer_print_entry_header,
+				  &ftrace_show_header_fops);
+	if (!entry)
+		pr_warn("Could not create tracefs 'header_event' entry\n");
 
 	tr->event_dir = d_events;
 
diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c
index 9daa9b3bc6d9..59a411ff60c7 100644
--- a/kernel/trace/trace_events_filter.c
+++ b/kernel/trace/trace_events_filter.c
@@ -108,12 +108,12 @@ static char *err_text[] = {
 };
 
 struct opstack_op {
-	int op;
+	enum filter_op_ids op;
 	struct list_head list;
 };
 
 struct postfix_elt {
-	int op;
+	enum filter_op_ids op;
 	char *operand;
 	struct list_head list;
 };
@@ -145,34 +145,50 @@ struct pred_stack {
 
 /* If not of not match is equal to not of not, then it is a match */
 #define DEFINE_COMPARISON_PRED(type)					\
-static int filter_pred_##type(struct filter_pred *pred, void *event)	\
+static int filter_pred_LT_##type(struct filter_pred *pred, void *event)	\
 {									\
 	type *addr = (type *)(event + pred->offset);			\
 	type val = (type)pred->val;					\
-	int match = 0;							\
-									\
-	switch (pred->op) {						\
-	case OP_LT:							\
-		match = (*addr < val);					\
-		break;							\
-	case OP_LE:							\
-		match = (*addr <= val);					\
-		break;							\
-	case OP_GT:							\
-		match = (*addr > val);					\
-		break;							\
-	case OP_GE:							\
-		match = (*addr >= val);					\
-		break;							\
-	case OP_BAND:							\
-		match = (*addr & val);					\
-		break;							\
-	default:							\
-		break;							\
-	}								\
-									\
+	int match = (*addr < val);					\
 	return !!match == !pred->not;					\
-}
+}									\
+static int filter_pred_LE_##type(struct filter_pred *pred, void *event)	\
+{									\
+	type *addr = (type *)(event + pred->offset);			\
+	type val = (type)pred->val;					\
+	int match = (*addr <= val);					\
+	return !!match == !pred->not;					\
+}									\
+static int filter_pred_GT_##type(struct filter_pred *pred, void *event)	\
+{									\
+	type *addr = (type *)(event + pred->offset);			\
+	type val = (type)pred->val;					\
+	int match = (*addr > val);					\
+	return !!match == !pred->not;					\
+}									\
+static int filter_pred_GE_##type(struct filter_pred *pred, void *event)	\
+{									\
+	type *addr = (type *)(event + pred->offset);			\
+	type val = (type)pred->val;					\
+	int match = (*addr >= val);					\
+	return !!match == !pred->not;					\
+}									\
+static int filter_pred_BAND_##type(struct filter_pred *pred, void *event) \
+{									\
+	type *addr = (type *)(event + pred->offset);			\
+	type val = (type)pred->val;					\
+	int match = !!(*addr & val);					\
+	return match == !pred->not;					\
+}									\
+static const filter_pred_fn_t pred_funcs_##type[] = {			\
+	filter_pred_LT_##type,						\
+	filter_pred_LE_##type,						\
+	filter_pred_GT_##type,						\
+	filter_pred_GE_##type,						\
+	filter_pred_BAND_##type,					\
+};
+
+#define PRED_FUNC_START			OP_LT
 
 #define DEFINE_EQUALITY_PRED(size)					\
 static int filter_pred_##size(struct filter_pred *pred, void *event)	\
@@ -344,6 +360,12 @@ static int regex_match_end(char *str, struct regex *r, int len)
 	return 0;
 }
 
+static int regex_match_glob(char *str, struct regex *r, int len __maybe_unused)
+{
+	if (glob_match(r->pattern, str))
+		return 1;
+	return 0;
+}
 /**
  * filter_parse_regex - parse a basic regex
  * @buff:   the raw regex
@@ -380,14 +402,20 @@ enum regex_type filter_parse_regex(char *buff, int len, char **search, int *not)
 			if (!i) {
 				*search = buff + 1;
 				type = MATCH_END_ONLY;
-			} else {
+			} else if (i == len - 1) {
 				if (type == MATCH_END_ONLY)
 					type = MATCH_MIDDLE_ONLY;
 				else
 					type = MATCH_FRONT_ONLY;
 				buff[i] = 0;
 				break;
+			} else {	/* pattern continues, use full glob */
+				type = MATCH_GLOB;
+				break;
 			}
+		} else if (strchr("[?\\", buff[i])) {
+			type = MATCH_GLOB;
+			break;
 		}
 	}
 
@@ -420,6 +448,9 @@ static void filter_build_regex(struct filter_pred *pred)
 	case MATCH_END_ONLY:
 		r->match = regex_match_end;
 		break;
+	case MATCH_GLOB:
+		r->match = regex_match_glob;
+		break;
 	}
 
 	pred->not ^= not;
@@ -946,7 +977,7 @@ int filter_assign_type(const char *type)
 	return FILTER_OTHER;
 }
 
-static bool is_legal_op(struct ftrace_event_field *field, int op)
+static bool is_legal_op(struct ftrace_event_field *field, enum filter_op_ids op)
 {
 	if (is_string_field(field) &&
 	    (op != OP_EQ && op != OP_NE && op != OP_GLOB))
@@ -957,8 +988,8 @@ static bool is_legal_op(struct ftrace_event_field *field, int op)
 	return true;
 }
 
-static filter_pred_fn_t select_comparison_fn(int op, int field_size,
-					     int field_is_signed)
+static filter_pred_fn_t select_comparison_fn(enum filter_op_ids op,
+					    int field_size, int field_is_signed)
 {
 	filter_pred_fn_t fn = NULL;
 
@@ -967,33 +998,33 @@ static filter_pred_fn_t select_comparison_fn(int op, int field_size,
 		if (op == OP_EQ || op == OP_NE)
 			fn = filter_pred_64;
 		else if (field_is_signed)
-			fn = filter_pred_s64;
+			fn = pred_funcs_s64[op - PRED_FUNC_START];
 		else
-			fn = filter_pred_u64;
+			fn = pred_funcs_u64[op - PRED_FUNC_START];
 		break;
 	case 4:
 		if (op == OP_EQ || op == OP_NE)
 			fn = filter_pred_32;
 		else if (field_is_signed)
-			fn = filter_pred_s32;
+			fn = pred_funcs_s32[op - PRED_FUNC_START];
 		else
-			fn = filter_pred_u32;
+			fn = pred_funcs_u32[op - PRED_FUNC_START];
 		break;
 	case 2:
 		if (op == OP_EQ || op == OP_NE)
 			fn = filter_pred_16;
 		else if (field_is_signed)
-			fn = filter_pred_s16;
+			fn = pred_funcs_s16[op - PRED_FUNC_START];
 		else
-			fn = filter_pred_u16;
+			fn = pred_funcs_u16[op - PRED_FUNC_START];
 		break;
 	case 1:
 		if (op == OP_EQ || op == OP_NE)
 			fn = filter_pred_8;
 		else if (field_is_signed)
-			fn = filter_pred_s8;
+			fn = pred_funcs_s8[op - PRED_FUNC_START];
 		else
-			fn = filter_pred_u8;
+			fn = pred_funcs_u8[op - PRED_FUNC_START];
 		break;
 	}
 
@@ -1166,7 +1197,8 @@ static inline int append_operand_char(struct filter_parse_state *ps, char c)
 	return 0;
 }
 
-static int filter_opstack_push(struct filter_parse_state *ps, int op)
+static int filter_opstack_push(struct filter_parse_state *ps,
+			       enum filter_op_ids op)
 {
 	struct opstack_op *opstack_op;
 
@@ -1200,7 +1232,7 @@ static int filter_opstack_top(struct filter_parse_state *ps)
 static int filter_opstack_pop(struct filter_parse_state *ps)
 {
 	struct opstack_op *opstack_op;
-	int op;
+	enum filter_op_ids op;
 
 	if (filter_opstack_empty(ps))
 		return OP_NONE;
@@ -1245,7 +1277,7 @@ static int postfix_append_operand(struct filter_parse_state *ps, char *operand)
 	return 0;
 }
 
-static int postfix_append_op(struct filter_parse_state *ps, int op)
+static int postfix_append_op(struct filter_parse_state *ps, enum filter_op_ids op)
 {
 	struct postfix_elt *elt;
 
@@ -1275,8 +1307,8 @@ static void postfix_clear(struct filter_parse_state *ps)
 
 static int filter_parse(struct filter_parse_state *ps)
 {
+	enum filter_op_ids op, top_op;
 	int in_string = 0;
-	int op, top_op;
 	char ch;
 
 	while ((ch = infix_next(ps))) {
@@ -1367,7 +1399,8 @@ parse_operand:
 
 static struct filter_pred *create_pred(struct filter_parse_state *ps,
 				       struct trace_event_call *call,
-				       int op, char *operand1, char *operand2)
+				       enum filter_op_ids op,
+				       char *operand1, char *operand2)
 {
 	struct ftrace_event_field *field;
 	static struct filter_pred pred;
diff --git a/kernel/trace/trace_functions_graph.c b/kernel/trace/trace_functions_graph.c
index 4e480e870474..d56123cdcc89 100644
--- a/kernel/trace/trace_functions_graph.c
+++ b/kernel/trace/trace_functions_graph.c
@@ -65,7 +65,7 @@ struct fgraph_data {
 
 #define TRACE_GRAPH_INDENT	2
 
-static unsigned int max_depth;
+unsigned int fgraph_max_depth;
 
 static struct tracer_opt trace_opts[] = {
 	/* Display overruns? (for self-debug purpose) */
@@ -358,7 +358,7 @@ int __trace_graph_entry(struct trace_array *tr,
 	entry	= ring_buffer_event_data(event);
 	entry->graph_ent			= *trace;
 	if (!call_filter_check_discard(call, entry, buffer, event))
-		__buffer_unlock_commit(buffer, event);
+		trace_buffer_unlock_commit_nostack(buffer, event);
 
 	return 1;
 }
@@ -384,10 +384,10 @@ int trace_graph_entry(struct ftrace_graph_ent *trace)
 	if (!ftrace_trace_task(tr))
 		return 0;
 
-	/* trace it when it is-nested-in or is a function enabled. */
-	if ((!(trace->depth || ftrace_graph_addr(trace->func)) ||
-	     ftrace_graph_ignore_irqs()) || (trace->depth < 0) ||
-	    (max_depth && trace->depth >= max_depth))
+	if (ftrace_graph_ignore_func(trace))
+		return 0;
+
+	if (ftrace_graph_ignore_irqs())
 		return 0;
 
 	/*
@@ -469,7 +469,7 @@ void __trace_graph_return(struct trace_array *tr,
 	entry	= ring_buffer_event_data(event);
 	entry->ret				= *trace;
 	if (!call_filter_check_discard(call, entry, buffer, event))
-		__buffer_unlock_commit(buffer, event);
+		trace_buffer_unlock_commit_nostack(buffer, event);
 }
 
 void trace_graph_return(struct ftrace_graph_ret *trace)
@@ -842,6 +842,10 @@ print_graph_entry_leaf(struct trace_iterator *iter,
 
 		cpu_data = per_cpu_ptr(data->cpu_data, cpu);
 
+		/* If a graph tracer ignored set_graph_notrace */
+		if (call->depth < -1)
+			call->depth += FTRACE_NOTRACE_DEPTH;
+
 		/*
 		 * Comments display at + 1 to depth. Since
 		 * this is a leaf function, keep the comments
@@ -850,7 +854,8 @@ print_graph_entry_leaf(struct trace_iterator *iter,
 		cpu_data->depth = call->depth - 1;
 
 		/* No need to keep this function around for this depth */
-		if (call->depth < FTRACE_RETFUNC_DEPTH)
+		if (call->depth < FTRACE_RETFUNC_DEPTH &&
+		    !WARN_ON_ONCE(call->depth < 0))
 			cpu_data->enter_funcs[call->depth] = 0;
 	}
 
@@ -880,11 +885,16 @@ print_graph_entry_nested(struct trace_iterator *iter,
 		struct fgraph_cpu_data *cpu_data;
 		int cpu = iter->cpu;
 
+		/* If a graph tracer ignored set_graph_notrace */
+		if (call->depth < -1)
+			call->depth += FTRACE_NOTRACE_DEPTH;
+
 		cpu_data = per_cpu_ptr(data->cpu_data, cpu);
 		cpu_data->depth = call->depth;
 
 		/* Save this function pointer to see if the exit matches */
-		if (call->depth < FTRACE_RETFUNC_DEPTH)
+		if (call->depth < FTRACE_RETFUNC_DEPTH &&
+		    !WARN_ON_ONCE(call->depth < 0))
 			cpu_data->enter_funcs[call->depth] = call->func;
 	}
 
@@ -1114,7 +1124,8 @@ print_graph_return(struct ftrace_graph_ret *trace, struct trace_seq *s,
 		 */
 		cpu_data->depth = trace->depth - 1;
 
-		if (trace->depth < FTRACE_RETFUNC_DEPTH) {
+		if (trace->depth < FTRACE_RETFUNC_DEPTH &&
+		    !WARN_ON_ONCE(trace->depth < 0)) {
 			if (cpu_data->enter_funcs[trace->depth] != trace->func)
 				func_match = 0;
 			cpu_data->enter_funcs[trace->depth] = 0;
@@ -1489,7 +1500,7 @@ graph_depth_write(struct file *filp, const char __user *ubuf, size_t cnt,
 	if (ret)
 		return ret;
 
-	max_depth = val;
+	fgraph_max_depth = val;
 
 	*ppos += cnt;
 
@@ -1503,7 +1514,7 @@ graph_depth_read(struct file *filp, char __user *ubuf, size_t cnt,
 	char buf[15]; /* More than enough to hold UINT_MAX + "\n"*/
 	int n;
 
-	n = sprintf(buf, "%d\n", max_depth);
+	n = sprintf(buf, "%d\n", fgraph_max_depth);
 
 	return simple_read_from_buffer(ubuf, cnt, ppos, buf, n);
 }
diff --git a/kernel/trace/trace_hwlat.c b/kernel/trace/trace_hwlat.c
index b97286c48735..775569ec50d0 100644
--- a/kernel/trace/trace_hwlat.c
+++ b/kernel/trace/trace_hwlat.c
@@ -127,7 +127,7 @@ static void trace_hwlat_sample(struct hwlat_sample *sample)
 	entry->nmi_count		= sample->nmi_count;
 
 	if (!call_filter_check_discard(call, entry, buffer, event))
-		__buffer_unlock_commit(buffer, event);
+		trace_buffer_unlock_commit_nostack(buffer, event);
 }
 
 /* Macros to encapsulate the time capturing infrastructure */
diff --git a/kernel/trace/trace_irqsoff.c b/kernel/trace/trace_irqsoff.c
index 03cdff84d026..86654d7e1afe 100644
--- a/kernel/trace/trace_irqsoff.c
+++ b/kernel/trace/trace_irqsoff.c
@@ -175,6 +175,18 @@ static int irqsoff_graph_entry(struct ftrace_graph_ent *trace)
 	int ret;
 	int pc;
 
+	if (ftrace_graph_ignore_func(trace))
+		return 0;
+	/*
+	 * Do not trace a function if it's filtered by set_graph_notrace.
+	 * Make the index of ret stack negative to indicate that it should
+	 * ignore further functions.  But it needs its own ret stack entry
+	 * to recover the original index in order to continue tracing after
+	 * returning from the function.
+	 */
+	if (ftrace_graph_notrace_addr(trace->func))
+		return 1;
+
 	if (!func_prolog_dec(tr, &data, &flags))
 		return 0;
 
diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c
index eb6c9f1d3a93..a133ecd741e4 100644
--- a/kernel/trace/trace_kprobe.c
+++ b/kernel/trace/trace_kprobe.c
@@ -73,6 +73,17 @@ static nokprobe_inline bool trace_kprobe_is_on_module(struct trace_kprobe *tk)
 	return !!strchr(trace_kprobe_symbol(tk), ':');
 }
 
+static nokprobe_inline unsigned long trace_kprobe_nhit(struct trace_kprobe *tk)
+{
+	unsigned long nhit = 0;
+	int cpu;
+
+	for_each_possible_cpu(cpu)
+		nhit += *per_cpu_ptr(tk->nhit, cpu);
+
+	return nhit;
+}
+
 static int register_kprobe_event(struct trace_kprobe *tk);
 static int unregister_kprobe_event(struct trace_kprobe *tk);
 
@@ -882,14 +893,10 @@ static const struct file_operations kprobe_events_ops = {
 static int probes_profile_seq_show(struct seq_file *m, void *v)
 {
 	struct trace_kprobe *tk = v;
-	unsigned long nhit = 0;
-	int cpu;
-
-	for_each_possible_cpu(cpu)
-		nhit += *per_cpu_ptr(tk->nhit, cpu);
 
 	seq_printf(m, "  %-44s %15lu %15lu\n",
-		   trace_event_name(&tk->tp.call), nhit,
+		   trace_event_name(&tk->tp.call),
+		   trace_kprobe_nhit(tk),
 		   tk->rp.kp.nmissed);
 
 	return 0;
@@ -1354,18 +1361,18 @@ fs_initcall(init_kprobe_trace);
 
 
 #ifdef CONFIG_FTRACE_STARTUP_TEST
-
 /*
  * The "__used" keeps gcc from removing the function symbol
- * from the kallsyms table.
+ * from the kallsyms table. 'noinline' makes sure that there
+ * isn't an inlined version used by the test method below
  */
-static __used int kprobe_trace_selftest_target(int a1, int a2, int a3,
-					       int a4, int a5, int a6)
+static __used __init noinline int
+kprobe_trace_selftest_target(int a1, int a2, int a3, int a4, int a5, int a6)
 {
 	return a1 + a2 + a3 + a4 + a5 + a6;
 }
 
-static struct trace_event_file *
+static struct __init trace_event_file *
 find_trace_probe_file(struct trace_kprobe *tk, struct trace_array *tr)
 {
 	struct trace_event_file *file;
@@ -1443,12 +1450,25 @@ static __init int kprobe_trace_self_tests_init(void)
 
 	ret = target(1, 2, 3, 4, 5, 6);
 
+	/*
+	 * Not expecting an error here, the check is only to prevent the
+	 * optimizer from removing the call to target() as otherwise there
+	 * are no side-effects and the call is never performed.
+	 */
+	if (ret != 21)
+		warn++;
+
 	/* Disable trace points before removing it */
 	tk = find_trace_kprobe("testprobe", KPROBE_EVENT_SYSTEM);
 	if (WARN_ON_ONCE(tk == NULL)) {
 		pr_warn("error on getting test probe.\n");
 		warn++;
 	} else {
+		if (trace_kprobe_nhit(tk) != 1) {
+			pr_warn("incorrect number of testprobe hits\n");
+			warn++;
+		}
+
 		file = find_trace_probe_file(tk, top_trace_array());
 		if (WARN_ON_ONCE(file == NULL)) {
 			pr_warn("error on getting probe file.\n");
@@ -1462,6 +1482,11 @@ static __init int kprobe_trace_self_tests_init(void)
 		pr_warn("error on getting 2nd test probe.\n");
 		warn++;
 	} else {
+		if (trace_kprobe_nhit(tk) != 1) {
+			pr_warn("incorrect number of testprobe2 hits\n");
+			warn++;
+		}
+
 		file = find_trace_probe_file(tk, top_trace_array());
 		if (WARN_ON_ONCE(file == NULL)) {
 			pr_warn("error on getting probe file.\n");
diff --git a/kernel/trace/trace_output.c b/kernel/trace/trace_output.c
index 3fc20422c166..5d33a7352919 100644
--- a/kernel/trace/trace_output.c
+++ b/kernel/trace/trace_output.c
@@ -1288,6 +1288,35 @@ static struct trace_event trace_print_event = {
 	.funcs		= &trace_print_funcs,
 };
 
+static enum print_line_t trace_raw_data(struct trace_iterator *iter, int flags,
+					 struct trace_event *event)
+{
+	struct raw_data_entry *field;
+	int i;
+
+	trace_assign_type(field, iter->ent);
+
+	trace_seq_printf(&iter->seq, "# %x buf:", field->id);
+
+	for (i = 0; i < iter->ent_size - offsetof(struct raw_data_entry, buf); i++)
+		trace_seq_printf(&iter->seq, " %02x",
+				 (unsigned char)field->buf[i]);
+
+	trace_seq_putc(&iter->seq, '\n');
+
+	return trace_handle_return(&iter->seq);
+}
+
+static struct trace_event_functions trace_raw_data_funcs = {
+	.trace		= trace_raw_data,
+	.raw		= trace_raw_data,
+};
+
+static struct trace_event trace_raw_data_event = {
+	.type	 	= TRACE_RAW_DATA,
+	.funcs		= &trace_raw_data_funcs,
+};
+
 
 static struct trace_event *events[] __initdata = {
 	&trace_fn_event,
@@ -1299,6 +1328,7 @@ static struct trace_event *events[] __initdata = {
 	&trace_bprint_event,
 	&trace_print_event,
 	&trace_hwlat_event,
+	&trace_raw_data_event,
 	NULL
 };
 
diff --git a/kernel/trace/trace_sched_wakeup.c b/kernel/trace/trace_sched_wakeup.c
index 9d4399b553a3..5d0bb025bb21 100644
--- a/kernel/trace/trace_sched_wakeup.c
+++ b/kernel/trace/trace_sched_wakeup.c
@@ -239,6 +239,18 @@ static int wakeup_graph_entry(struct ftrace_graph_ent *trace)
 	unsigned long flags;
 	int pc, ret = 0;
 
+	if (ftrace_graph_ignore_func(trace))
+		return 0;
+	/*
+	 * Do not trace a function if it's filtered by set_graph_notrace.
+	 * Make the index of ret stack negative to indicate that it should
+	 * ignore further functions.  But it needs its own ret stack entry
+	 * to recover the original index in order to continue tracing after
+	 * returning from the function.
+	 */
+	if (ftrace_graph_notrace_addr(trace->func))
+		return 1;
+
 	if (!func_prolog_preempt_disable(tr, &data, &pc))
 		return 0;
 
@@ -790,6 +802,7 @@ static struct tracer wakeup_dl_tracer __read_mostly =
 #endif
 	.open		= wakeup_trace_open,
 	.close		= wakeup_trace_close,
+	.allow_instances = true,
 	.use_max_tr	= true,
 };
 
diff --git a/kernel/tracepoint.c b/kernel/tracepoint.c
index d0639d917899..1f9a31f934a4 100644
--- a/kernel/tracepoint.c
+++ b/kernel/tracepoint.c
@@ -194,9 +194,13 @@ static int tracepoint_add_func(struct tracepoint *tp,
 			       struct tracepoint_func *func, int prio)
 {
 	struct tracepoint_func *old, *tp_funcs;
+	int ret;
 
-	if (tp->regfunc && !static_key_enabled(&tp->key))
-		tp->regfunc();
+	if (tp->regfunc && !static_key_enabled(&tp->key)) {
+		ret = tp->regfunc();
+		if (ret < 0)
+			return ret;
+	}
 
 	tp_funcs = rcu_dereference_protected(tp->funcs,
 			lockdep_is_held(&tracepoints_mutex));
@@ -529,7 +533,7 @@ EXPORT_SYMBOL_GPL(for_each_kernel_tracepoint);
 /* NB: reg/unreg are called while guarded with the tracepoints_mutex */
 static int sys_tracepoint_refcount;
 
-void syscall_regfunc(void)
+int syscall_regfunc(void)
 {
 	struct task_struct *p, *t;
 
@@ -541,6 +545,8 @@ void syscall_regfunc(void)
 		read_unlock(&tasklist_lock);
 	}
 	sys_tracepoint_refcount++;
+
+	return 0;
 }
 
 void syscall_unregfunc(void)
generated by cgit-pink 1.4.1 (git 2.36.1) at 2024-10-15 16:28:03 +0000