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Diffstat (limited to 'kernel')
-rw-r--r--kernel/kprobes.c71
-rw-r--r--kernel/module.c43
-rw-r--r--kernel/trace/trace.h31
-rw-r--r--kernel/trace/trace_entries.h66
-rw-r--r--kernel/trace/trace_events.c20
-rw-r--r--kernel/trace/trace_events_hist.c8
-rw-r--r--kernel/trace/trace_export.c106
-rw-r--r--kernel/trace/trace_kprobe.c16
-rw-r--r--kernel/trace/trace_syscalls.c51
-rw-r--r--kernel/trace/trace_uprobe.c9
10 files changed, 185 insertions, 236 deletions
diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index 53534aa258a6..2625c241ac00 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -510,6 +510,8 @@ static void do_unoptimize_kprobes(void)
 	arch_unoptimize_kprobes(&unoptimizing_list, &freeing_list);
 	/* Loop free_list for disarming */
 	list_for_each_entry_safe(op, tmp, &freeing_list, list) {
+		/* Switching from detour code to origin */
+		op->kp.flags &= ~KPROBE_FLAG_OPTIMIZED;
 		/* Disarm probes if marked disabled */
 		if (kprobe_disabled(&op->kp))
 			arch_disarm_kprobe(&op->kp);
@@ -610,6 +612,18 @@ void wait_for_kprobe_optimizer(void)
 	mutex_unlock(&kprobe_mutex);
 }
 
+static bool optprobe_queued_unopt(struct optimized_kprobe *op)
+{
+	struct optimized_kprobe *_op;
+
+	list_for_each_entry(_op, &unoptimizing_list, list) {
+		if (op == _op)
+			return true;
+	}
+
+	return false;
+}
+
 /* Optimize kprobe if p is ready to be optimized */
 static void optimize_kprobe(struct kprobe *p)
 {
@@ -631,17 +645,21 @@ static void optimize_kprobe(struct kprobe *p)
 		return;
 
 	/* Check if it is already optimized. */
-	if (op->kp.flags & KPROBE_FLAG_OPTIMIZED)
+	if (op->kp.flags & KPROBE_FLAG_OPTIMIZED) {
+		if (optprobe_queued_unopt(op)) {
+			/* This is under unoptimizing. Just dequeue the probe */
+			list_del_init(&op->list);
+		}
 		return;
+	}
 	op->kp.flags |= KPROBE_FLAG_OPTIMIZED;
 
-	if (!list_empty(&op->list))
-		/* This is under unoptimizing. Just dequeue the probe */
-		list_del_init(&op->list);
-	else {
-		list_add(&op->list, &optimizing_list);
-		kick_kprobe_optimizer();
-	}
+	/* On unoptimizing/optimizing_list, op must have OPTIMIZED flag */
+	if (WARN_ON_ONCE(!list_empty(&op->list)))
+		return;
+
+	list_add(&op->list, &optimizing_list);
+	kick_kprobe_optimizer();
 }
 
 /* Short cut to direct unoptimizing */
@@ -649,6 +667,7 @@ static void force_unoptimize_kprobe(struct optimized_kprobe *op)
 {
 	lockdep_assert_cpus_held();
 	arch_unoptimize_kprobe(op);
+	op->kp.flags &= ~KPROBE_FLAG_OPTIMIZED;
 	if (kprobe_disabled(&op->kp))
 		arch_disarm_kprobe(&op->kp);
 }
@@ -662,31 +681,33 @@ static void unoptimize_kprobe(struct kprobe *p, bool force)
 		return; /* This is not an optprobe nor optimized */
 
 	op = container_of(p, struct optimized_kprobe, kp);
-	if (!kprobe_optimized(p)) {
-		/* Unoptimized or unoptimizing case */
-		if (force && !list_empty(&op->list)) {
-			/*
-			 * Only if this is unoptimizing kprobe and forced,
-			 * forcibly unoptimize it. (No need to unoptimize
-			 * unoptimized kprobe again :)
-			 */
-			list_del_init(&op->list);
-			force_unoptimize_kprobe(op);
-		}
+	if (!kprobe_optimized(p))
 		return;
-	}
 
-	op->kp.flags &= ~KPROBE_FLAG_OPTIMIZED;
 	if (!list_empty(&op->list)) {
-		/* Dequeue from the optimization queue */
-		list_del_init(&op->list);
+		if (optprobe_queued_unopt(op)) {
+			/* Queued in unoptimizing queue */
+			if (force) {
+				/*
+				 * Forcibly unoptimize the kprobe here, and queue it
+				 * in the freeing list for release afterwards.
+				 */
+				force_unoptimize_kprobe(op);
+				list_move(&op->list, &freeing_list);
+			}
+		} else {
+			/* Dequeue from the optimizing queue */
+			list_del_init(&op->list);
+			op->kp.flags &= ~KPROBE_FLAG_OPTIMIZED;
+		}
 		return;
 	}
+
 	/* Optimized kprobe case */
-	if (force)
+	if (force) {
 		/* Forcibly update the code: this is a special case */
 		force_unoptimize_kprobe(op);
-	else {
+	} else {
 		list_add(&op->list, &unoptimizing_list);
 		kick_kprobe_optimizer();
 	}
diff --git a/kernel/module.c b/kernel/module.c
index b56f3224b161..ac058a5ad1d1 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -2031,49 +2031,6 @@ static void module_enable_nx(const struct module *mod)
 	frob_writable_data(&mod->init_layout, set_memory_nx);
 }
 
-/* Iterate through all modules and set each module's text as RW */
-void set_all_modules_text_rw(void)
-{
-	struct module *mod;
-
-	if (!rodata_enabled)
-		return;
-
-	mutex_lock(&module_mutex);
-	list_for_each_entry_rcu(mod, &modules, list) {
-		if (mod->state == MODULE_STATE_UNFORMED)
-			continue;
-
-		frob_text(&mod->core_layout, set_memory_rw);
-		frob_text(&mod->init_layout, set_memory_rw);
-	}
-	mutex_unlock(&module_mutex);
-}
-
-/* Iterate through all modules and set each module's text as RO */
-void set_all_modules_text_ro(void)
-{
-	struct module *mod;
-
-	if (!rodata_enabled)
-		return;
-
-	mutex_lock(&module_mutex);
-	list_for_each_entry_rcu(mod, &modules, list) {
-		/*
-		 * Ignore going modules since it's possible that ro
-		 * protection has already been disabled, otherwise we'll
-		 * run into protection faults at module deallocation.
-		 */
-		if (mod->state == MODULE_STATE_UNFORMED ||
-			mod->state == MODULE_STATE_GOING)
-			continue;
-
-		frob_text(&mod->core_layout, set_memory_ro);
-		frob_text(&mod->init_layout, set_memory_ro);
-	}
-	mutex_unlock(&module_mutex);
-}
 #else /* !CONFIG_STRICT_MODULE_RWX */
 static void module_enable_nx(const struct module *mod) { }
 #endif /*  CONFIG_STRICT_MODULE_RWX */
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 63bf60f79398..a98dce1b3334 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -52,6 +52,9 @@ enum trace_type {
 #undef __field
 #define __field(type, item)		type	item;
 
+#undef __field_fn
+#define __field_fn(type, item)		type	item;
+
 #undef __field_struct
 #define __field_struct(type, item)	__field(type, item)
 
@@ -71,26 +74,22 @@ enum trace_type {
 #define F_STRUCT(args...)		args
 
 #undef FTRACE_ENTRY
-#define FTRACE_ENTRY(name, struct_name, id, tstruct, print, filter)	\
+#define FTRACE_ENTRY(name, struct_name, id, tstruct, print)		\
 	struct struct_name {						\
 		struct trace_entry	ent;				\
 		tstruct							\
 	}
 
 #undef FTRACE_ENTRY_DUP
-#define FTRACE_ENTRY_DUP(name, name_struct, id, tstruct, printk, filter)
+#define FTRACE_ENTRY_DUP(name, name_struct, id, tstruct, printk)
 
 #undef FTRACE_ENTRY_REG
-#define FTRACE_ENTRY_REG(name, struct_name, id, tstruct, print,	\
-			 filter, regfn) \
-	FTRACE_ENTRY(name, struct_name, id, PARAMS(tstruct), PARAMS(print), \
-		     filter)
+#define FTRACE_ENTRY_REG(name, struct_name, id, tstruct, print,	regfn)	\
+	FTRACE_ENTRY(name, struct_name, id, PARAMS(tstruct), PARAMS(print))
 
 #undef FTRACE_ENTRY_PACKED
-#define FTRACE_ENTRY_PACKED(name, struct_name, id, tstruct, print,	\
-			    filter)					\
-	FTRACE_ENTRY(name, struct_name, id, PARAMS(tstruct), PARAMS(print), \
-		     filter) __packed
+#define FTRACE_ENTRY_PACKED(name, struct_name, id, tstruct, print)	\
+	FTRACE_ENTRY(name, struct_name, id, PARAMS(tstruct), PARAMS(print)) __packed
 
 #include "trace_entries.h"
 
@@ -1917,17 +1916,15 @@ extern void tracing_log_err(struct trace_array *tr,
 #define internal_trace_puts(str) __trace_puts(_THIS_IP_, str, strlen(str))
 
 #undef FTRACE_ENTRY
-#define FTRACE_ENTRY(call, struct_name, id, tstruct, print, filter)	\
+#define FTRACE_ENTRY(call, struct_name, id, tstruct, print)	\
 	extern struct trace_event_call					\
 	__aligned(4) event_##call;
 #undef FTRACE_ENTRY_DUP
-#define FTRACE_ENTRY_DUP(call, struct_name, id, tstruct, print, filter)	\
-	FTRACE_ENTRY(call, struct_name, id, PARAMS(tstruct), PARAMS(print), \
-		     filter)
+#define FTRACE_ENTRY_DUP(call, struct_name, id, tstruct, print)	\
+	FTRACE_ENTRY(call, struct_name, id, PARAMS(tstruct), PARAMS(print))
 #undef FTRACE_ENTRY_PACKED
-#define FTRACE_ENTRY_PACKED(call, struct_name, id, tstruct, print, filter) \
-	FTRACE_ENTRY(call, struct_name, id, PARAMS(tstruct), PARAMS(print), \
-		     filter)
+#define FTRACE_ENTRY_PACKED(call, struct_name, id, tstruct, print) \
+	FTRACE_ENTRY(call, struct_name, id, PARAMS(tstruct), PARAMS(print))
 
 #include "trace_entries.h"
 
diff --git a/kernel/trace/trace_entries.h b/kernel/trace/trace_entries.h
index fc8e97328e54..3e9d81608284 100644
--- a/kernel/trace/trace_entries.h
+++ b/kernel/trace/trace_entries.h
@@ -61,15 +61,13 @@ FTRACE_ENTRY_REG(function, ftrace_entry,
 	TRACE_FN,
 
 	F_STRUCT(
-		__field(	unsigned long,	ip		)
-		__field(	unsigned long,	parent_ip	)
+		__field_fn(	unsigned long,	ip		)
+		__field_fn(	unsigned long,	parent_ip	)
 	),
 
 	F_printk(" %ps <-- %ps",
 		 (void *)__entry->ip, (void *)__entry->parent_ip),
 
-	FILTER_TRACE_FN,
-
 	perf_ftrace_event_register
 );
 
@@ -84,9 +82,7 @@ FTRACE_ENTRY_PACKED(funcgraph_entry, ftrace_graph_ent_entry,
 		__field_desc(	int,		graph_ent,	depth		)
 	),
 
-	F_printk("--> %ps (%d)", (void *)__entry->func, __entry->depth),
-
-	FILTER_OTHER
+	F_printk("--> %ps (%d)", (void *)__entry->func, __entry->depth)
 );
 
 /* Function return entry */
@@ -97,18 +93,16 @@ FTRACE_ENTRY_PACKED(funcgraph_exit, ftrace_graph_ret_entry,
 	F_STRUCT(
 		__field_struct(	struct ftrace_graph_ret,	ret	)
 		__field_desc(	unsigned long,	ret,		func	)
+		__field_desc(	unsigned long,	ret,		overrun	)
 		__field_desc(	unsigned long long, ret,	calltime)
 		__field_desc(	unsigned long long, ret,	rettime	)
-		__field_desc(	unsigned long,	ret,		overrun	)
 		__field_desc(	int,		ret,		depth	)
 	),
 
 	F_printk("<-- %ps (%d) (start: %llx  end: %llx) over: %d",
 		 (void *)__entry->func, __entry->depth,
 		 __entry->calltime, __entry->rettime,
-		 __entry->depth),
-
-	FILTER_OTHER
+		 __entry->depth)
 );
 
 /*
@@ -137,9 +131,7 @@ FTRACE_ENTRY(context_switch, ctx_switch_entry,
 	F_printk("%u:%u:%u  ==> %u:%u:%u [%03u]",
 		 __entry->prev_pid, __entry->prev_prio, __entry->prev_state,
 		 __entry->next_pid, __entry->next_prio, __entry->next_state,
-		 __entry->next_cpu),
-
-	FILTER_OTHER
+		 __entry->next_cpu)
 );
 
 /*
@@ -157,9 +149,7 @@ FTRACE_ENTRY_DUP(wakeup, ctx_switch_entry,
 	F_printk("%u:%u:%u  ==+ %u:%u:%u [%03u]",
 		 __entry->prev_pid, __entry->prev_prio, __entry->prev_state,
 		 __entry->next_pid, __entry->next_prio, __entry->next_state,
-		 __entry->next_cpu),
-
-	FILTER_OTHER
+		 __entry->next_cpu)
 );
 
 /*
@@ -183,9 +173,7 @@ FTRACE_ENTRY(kernel_stack, stack_entry,
 		 (void *)__entry->caller[0], (void *)__entry->caller[1],
 		 (void *)__entry->caller[2], (void *)__entry->caller[3],
 		 (void *)__entry->caller[4], (void *)__entry->caller[5],
-		 (void *)__entry->caller[6], (void *)__entry->caller[7]),
-
-	FILTER_OTHER
+		 (void *)__entry->caller[6], (void *)__entry->caller[7])
 );
 
 FTRACE_ENTRY(user_stack, userstack_entry,
@@ -203,9 +191,7 @@ FTRACE_ENTRY(user_stack, userstack_entry,
 		 (void *)__entry->caller[0], (void *)__entry->caller[1],
 		 (void *)__entry->caller[2], (void *)__entry->caller[3],
 		 (void *)__entry->caller[4], (void *)__entry->caller[5],
-		 (void *)__entry->caller[6], (void *)__entry->caller[7]),
-
-	FILTER_OTHER
+		 (void *)__entry->caller[6], (void *)__entry->caller[7])
 );
 
 /*
@@ -222,9 +208,7 @@ FTRACE_ENTRY(bprint, bprint_entry,
 	),
 
 	F_printk("%ps: %s",
-		 (void *)__entry->ip, __entry->fmt),
-
-	FILTER_OTHER
+		 (void *)__entry->ip, __entry->fmt)
 );
 
 FTRACE_ENTRY_REG(print, print_entry,
@@ -239,8 +223,6 @@ FTRACE_ENTRY_REG(print, print_entry,
 	F_printk("%ps: %s",
 		 (void *)__entry->ip, __entry->buf),
 
-	FILTER_OTHER,
-
 	ftrace_event_register
 );
 
@@ -254,9 +236,7 @@ FTRACE_ENTRY(raw_data, raw_data_entry,
 	),
 
 	F_printk("id:%04x %08x",
-		 __entry->id, (int)__entry->buf[0]),
-
-	FILTER_OTHER
+		 __entry->id, (int)__entry->buf[0])
 );
 
 FTRACE_ENTRY(bputs, bputs_entry,
@@ -269,9 +249,7 @@ FTRACE_ENTRY(bputs, bputs_entry,
 	),
 
 	F_printk("%ps: %s",
-		 (void *)__entry->ip, __entry->str),
-
-	FILTER_OTHER
+		 (void *)__entry->ip, __entry->str)
 );
 
 FTRACE_ENTRY(mmiotrace_rw, trace_mmiotrace_rw,
@@ -283,16 +261,14 @@ FTRACE_ENTRY(mmiotrace_rw, trace_mmiotrace_rw,
 		__field_desc(	resource_size_t, rw,	phys	)
 		__field_desc(	unsigned long,	rw,	value	)
 		__field_desc(	unsigned long,	rw,	pc	)
-		__field_desc(	int, 		rw,	map_id	)
+		__field_desc(	int,		rw,	map_id	)
 		__field_desc(	unsigned char,	rw,	opcode	)
 		__field_desc(	unsigned char,	rw,	width	)
 	),
 
 	F_printk("%lx %lx %lx %d %x %x",
 		 (unsigned long)__entry->phys, __entry->value, __entry->pc,
-		 __entry->map_id, __entry->opcode, __entry->width),
-
-	FILTER_OTHER
+		 __entry->map_id, __entry->opcode, __entry->width)
 );
 
 FTRACE_ENTRY(mmiotrace_map, trace_mmiotrace_map,
@@ -304,15 +280,13 @@ FTRACE_ENTRY(mmiotrace_map, trace_mmiotrace_map,
 		__field_desc(	resource_size_t, map,	phys	)
 		__field_desc(	unsigned long,	map,	virt	)
 		__field_desc(	unsigned long,	map,	len	)
-		__field_desc(	int, 		map,	map_id	)
+		__field_desc(	int,		map,	map_id	)
 		__field_desc(	unsigned char,	map,	opcode	)
 	),
 
 	F_printk("%lx %lx %lx %d %x",
 		 (unsigned long)__entry->phys, __entry->virt, __entry->len,
-		 __entry->map_id, __entry->opcode),
-
-	FILTER_OTHER
+		 __entry->map_id, __entry->opcode)
 );
 
 
@@ -334,9 +308,7 @@ FTRACE_ENTRY(branch, trace_branch,
 	F_printk("%u:%s:%s (%u)%s",
 		 __entry->line,
 		 __entry->func, __entry->file, __entry->correct,
-		 __entry->constant ? " CONSTANT" : ""),
-
-	FILTER_OTHER
+		 __entry->constant ? " CONSTANT" : "")
 );
 
 
@@ -362,7 +334,5 @@ FTRACE_ENTRY(hwlat, hwlat_entry,
 		 __entry->duration,
 		 __entry->outer_duration,
 		 __entry->nmi_total_ts,
-		 __entry->nmi_count),
-
-	FILTER_OTHER
+		 __entry->nmi_count)
 );
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index a5b614cc3887..c8622a44d300 100644
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -24,6 +24,7 @@
 #include <linux/delay.h>
 
 #include <trace/events/sched.h>
+#include <trace/syscall.h>
 
 #include <asm/setup.h>
 
@@ -2017,7 +2018,24 @@ event_create_dir(struct dentry *parent, struct trace_event_file *file)
 	 */
 	head = trace_get_fields(call);
 	if (list_empty(head)) {
-		ret = call->class->define_fields(call);
+		struct trace_event_fields *field = call->class->fields_array;
+		unsigned int offset = sizeof(struct trace_entry);
+
+		for (; field->type; field++) {
+			if (field->type == TRACE_FUNCTION_TYPE) {
+				ret = field->define_fields(call);
+				break;
+			}
+
+			offset = ALIGN(offset, field->align);
+			ret = trace_define_field(call, field->type, field->name,
+						 offset, field->size,
+						 field->is_signed, field->filter_type);
+			if (ret)
+				break;
+
+			offset += field->size;
+		}
 		if (ret < 0) {
 			pr_warn("Could not initialize trace point events/%s\n",
 				name);
diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c
index 6ac35b9e195d..f2896d13001b 100644
--- a/kernel/trace/trace_events_hist.c
+++ b/kernel/trace/trace_events_hist.c
@@ -1155,6 +1155,12 @@ static struct synth_event *find_synth_event(const char *name)
 	return NULL;
 }
 
+static struct trace_event_fields synth_event_fields_array[] = {
+	{ .type = TRACE_FUNCTION_TYPE,
+	  .define_fields = synth_event_define_fields },
+	{}
+};
+
 static int register_synth_event(struct synth_event *event)
 {
 	struct trace_event_call *call = &event->call;
@@ -1176,7 +1182,7 @@ static int register_synth_event(struct synth_event *event)
 
 	INIT_LIST_HEAD(&call->class->fields);
 	call->event.funcs = &synth_event_funcs;
-	call->class->define_fields = synth_event_define_fields;
+	call->class->fields_array = synth_event_fields_array;
 
 	ret = register_trace_event(&call->event);
 	if (!ret) {
diff --git a/kernel/trace/trace_export.c b/kernel/trace/trace_export.c
index 2e6d2e9741cc..77ce5a3b6773 100644
--- a/kernel/trace/trace_export.c
+++ b/kernel/trace/trace_export.c
@@ -29,10 +29,8 @@ static int ftrace_event_register(struct trace_event_call *call,
  * function and thus become accesible via perf.
  */
 #undef FTRACE_ENTRY_REG
-#define FTRACE_ENTRY_REG(name, struct_name, id, tstruct, print, \
-			 filter, regfn) \
-	FTRACE_ENTRY(name, struct_name, id, PARAMS(tstruct), PARAMS(print), \
-		     filter)
+#define FTRACE_ENTRY_REG(name, struct_name, id, tstruct, print, regfn) \
+	FTRACE_ENTRY(name, struct_name, id, PARAMS(tstruct), PARAMS(print))
 
 /* not needed for this file */
 #undef __field_struct
@@ -41,6 +39,9 @@ static int ftrace_event_register(struct trace_event_call *call,
 #undef __field
 #define __field(type, item)				type item;
 
+#undef __field_fn
+#define __field_fn(type, item)				type item;
+
 #undef __field_desc
 #define __field_desc(type, container, item)		type item;
 
@@ -60,7 +61,7 @@ static int ftrace_event_register(struct trace_event_call *call,
 #define F_printk(fmt, args...) fmt, args
 
 #undef FTRACE_ENTRY
-#define FTRACE_ENTRY(name, struct_name, id, tstruct, print, filter)	\
+#define FTRACE_ENTRY(name, struct_name, id, tstruct, print)		\
 struct ____ftrace_##name {						\
 	tstruct								\
 };									\
@@ -73,76 +74,46 @@ static void __always_unused ____ftrace_check_##name(void)		\
 }
 
 #undef FTRACE_ENTRY_DUP
-#define FTRACE_ENTRY_DUP(name, struct_name, id, tstruct, print, filter)	\
-	FTRACE_ENTRY(name, struct_name, id, PARAMS(tstruct), PARAMS(print), \
-		     filter)
+#define FTRACE_ENTRY_DUP(name, struct_name, id, tstruct, print)		\
+	FTRACE_ENTRY(name, struct_name, id, PARAMS(tstruct), PARAMS(print))
 
 #include "trace_entries.h"
 
+#undef __field_ext
+#define __field_ext(_type, _item, _filter_type) {			\
+	.type = #_type, .name = #_item,					\
+	.size = sizeof(_type), .align = __alignof__(_type),		\
+	is_signed_type(_type), .filter_type = _filter_type },
+
 #undef __field
-#define __field(type, item)						\
-	ret = trace_define_field(event_call, #type, #item,		\
-				 offsetof(typeof(field), item),		\
-				 sizeof(field.item),			\
-				 is_signed_type(type), filter_type);	\
-	if (ret)							\
-		return ret;
+#define __field(_type, _item) __field_ext(_type, _item, FILTER_OTHER)
+
+#undef __field_fn
+#define __field_fn(_type, _item) __field_ext(_type, _item, FILTER_TRACE_FN)
 
 #undef __field_desc
-#define __field_desc(type, container, item)	\
-	ret = trace_define_field(event_call, #type, #item,		\
-				 offsetof(typeof(field),		\
-					  container.item),		\
-				 sizeof(field.container.item),		\
-				 is_signed_type(type), filter_type);	\
-	if (ret)							\
-		return ret;
+#define __field_desc(_type, _container, _item) __field_ext(_type, _item, FILTER_OTHER)
 
 #undef __array
-#define __array(type, item, len)					\
-	do {								\
-		char *type_str = #type"["__stringify(len)"]";		\
-		BUILD_BUG_ON(len > MAX_FILTER_STR_VAL);			\
-		ret = trace_define_field(event_call, type_str, #item,	\
-				 offsetof(typeof(field), item),		\
-				 sizeof(field.item),			\
-				 is_signed_type(type), filter_type);	\
-		if (ret)						\
-			return ret;					\
-	} while (0);
+#define __array(_type, _item, _len) {					\
+	.type = #_type"["__stringify(_len)"]", .name = #_item,		\
+	.size = sizeof(_type[_len]), .align = __alignof__(_type),	\
+	is_signed_type(_type), .filter_type = FILTER_OTHER },
 
 #undef __array_desc
-#define __array_desc(type, container, item, len)			\
-	BUILD_BUG_ON(len > MAX_FILTER_STR_VAL);				\
-	ret = trace_define_field(event_call, #type "[" #len "]", #item,	\
-				 offsetof(typeof(field),		\
-					  container.item),		\
-				 sizeof(field.container.item),		\
-				 is_signed_type(type), filter_type);	\
-	if (ret)							\
-		return ret;
+#define __array_desc(_type, _container, _item, _len) __array(_type, _item, _len)
 
 #undef __dynamic_array
-#define __dynamic_array(type, item)					\
-	ret = trace_define_field(event_call, #type "[]", #item,  \
-				 offsetof(typeof(field), item),		\
-				 0, is_signed_type(type), filter_type);\
-	if (ret)							\
-		return ret;
+#define __dynamic_array(_type, _item) {					\
+	.type = #_type "[]", .name = #_item,				\
+	.size = 0, .align = __alignof__(_type),				\
+	is_signed_type(_type), .filter_type = FILTER_OTHER },
 
 #undef FTRACE_ENTRY
-#define FTRACE_ENTRY(name, struct_name, id, tstruct, print, filter)	\
-static int __init							\
-ftrace_define_fields_##name(struct trace_event_call *event_call)	\
-{									\
-	struct struct_name field;					\
-	int ret;							\
-	int filter_type = filter;					\
-									\
-	tstruct;							\
-									\
-	return ret;							\
-}
+#define FTRACE_ENTRY(name, struct_name, id, tstruct, print)		\
+static struct trace_event_fields ftrace_event_fields_##name[] = {	\
+	tstruct								\
+	{} };
 
 #include "trace_entries.h"
 
@@ -152,6 +123,9 @@ ftrace_define_fields_##name(struct trace_event_call *event_call)	\
 #undef __field
 #define __field(type, item)
 
+#undef __field_fn
+#define __field_fn(type, item)
+
 #undef __field_desc
 #define __field_desc(type, container, item)
 
@@ -168,12 +142,10 @@ ftrace_define_fields_##name(struct trace_event_call *event_call)	\
 #define F_printk(fmt, args...) __stringify(fmt) ", "  __stringify(args)
 
 #undef FTRACE_ENTRY_REG
-#define FTRACE_ENTRY_REG(call, struct_name, etype, tstruct, print, filter,\
-			 regfn)						\
-									\
+#define FTRACE_ENTRY_REG(call, struct_name, etype, tstruct, print, regfn) \
 static struct trace_event_class __refdata event_class_ftrace_##call = {	\
 	.system			= __stringify(TRACE_SYSTEM),		\
-	.define_fields		= ftrace_define_fields_##call,		\
+	.fields_array		= ftrace_event_fields_##call,		\
 	.fields			= LIST_HEAD_INIT(event_class_ftrace_##call.fields),\
 	.reg			= regfn,				\
 };									\
@@ -191,9 +163,9 @@ static struct trace_event_call __used						\
 __attribute__((section("_ftrace_events"))) *__event_##call = &event_##call;
 
 #undef FTRACE_ENTRY
-#define FTRACE_ENTRY(call, struct_name, etype, tstruct, print, filter)	\
+#define FTRACE_ENTRY(call, struct_name, etype, tstruct, print)		\
 	FTRACE_ENTRY_REG(call, struct_name, etype,			\
-			 PARAMS(tstruct), PARAMS(print), filter, NULL)
+			 PARAMS(tstruct), PARAMS(print), NULL)
 
 bool ftrace_event_is_function(struct trace_event_call *call)
 {
diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c
index 3f54dc2f6e1c..aa515d578c5b 100644
--- a/kernel/trace/trace_kprobe.c
+++ b/kernel/trace/trace_kprobe.c
@@ -1555,16 +1555,28 @@ static struct trace_event_functions kprobe_funcs = {
 	.trace		= print_kprobe_event
 };
 
+static struct trace_event_fields kretprobe_fields_array[] = {
+	{ .type = TRACE_FUNCTION_TYPE,
+	  .define_fields = kretprobe_event_define_fields },
+	{}
+};
+
+static struct trace_event_fields kprobe_fields_array[] = {
+	{ .type = TRACE_FUNCTION_TYPE,
+	  .define_fields = kprobe_event_define_fields },
+	{}
+};
+
 static inline void init_trace_event_call(struct trace_kprobe *tk)
 {
 	struct trace_event_call *call = trace_probe_event_call(&tk->tp);
 
 	if (trace_kprobe_is_return(tk)) {
 		call->event.funcs = &kretprobe_funcs;
-		call->class->define_fields = kretprobe_event_define_fields;
+		call->class->fields_array = kretprobe_fields_array;
 	} else {
 		call->event.funcs = &kprobe_funcs;
-		call->class->define_fields = kprobe_event_define_fields;
+		call->class->fields_array = kprobe_fields_array;
 	}
 
 	call->flags = TRACE_EVENT_FL_KPROBE;
diff --git a/kernel/trace/trace_syscalls.c b/kernel/trace/trace_syscalls.c
index 16fa218556fa..2978c29d87d4 100644
--- a/kernel/trace/trace_syscalls.c
+++ b/kernel/trace/trace_syscalls.c
@@ -203,11 +203,10 @@ print_syscall_exit(struct trace_iterator *iter, int flags,
 
 extern char *__bad_type_size(void);
 
-#define SYSCALL_FIELD(type, field, name)				\
-	sizeof(type) != sizeof(trace.field) ?				\
-		__bad_type_size() :					\
-		#type, #name, offsetof(typeof(trace), field),		\
-		sizeof(trace.field), is_signed_type(type)
+#define SYSCALL_FIELD(_type, _name) {					\
+	.type = #_type, .name = #_name,					\
+	.size = sizeof(_type), .align = __alignof__(_type),		\
+	.is_signed = is_signed_type(_type), .filter_type = FILTER_OTHER }
 
 static int __init
 __set_enter_print_fmt(struct syscall_metadata *entry, char *buf, int len)
@@ -274,42 +273,23 @@ static int __init syscall_enter_define_fields(struct trace_event_call *call)
 {
 	struct syscall_trace_enter trace;
 	struct syscall_metadata *meta = call->data;
-	int ret;
-	int i;
 	int offset = offsetof(typeof(trace), args);
-
-	ret = trace_define_field(call, SYSCALL_FIELD(int, nr, __syscall_nr),
-				 FILTER_OTHER);
-	if (ret)
-		return ret;
+	int ret = 0;
+	int i;
 
 	for (i = 0; i < meta->nb_args; i++) {
 		ret = trace_define_field(call, meta->types[i],
 					 meta->args[i], offset,
 					 sizeof(unsigned long), 0,
 					 FILTER_OTHER);
+		if (ret)
+			break;
 		offset += sizeof(unsigned long);
 	}
 
 	return ret;
 }
 
-static int __init syscall_exit_define_fields(struct trace_event_call *call)
-{
-	struct syscall_trace_exit trace;
-	int ret;
-
-	ret = trace_define_field(call, SYSCALL_FIELD(int, nr, __syscall_nr),
-				 FILTER_OTHER);
-	if (ret)
-		return ret;
-
-	ret = trace_define_field(call, SYSCALL_FIELD(long, ret, ret),
-				 FILTER_OTHER);
-
-	return ret;
-}
-
 static void ftrace_syscall_enter(void *data, struct pt_regs *regs, long id)
 {
 	struct trace_array *tr = data;
@@ -507,6 +487,13 @@ static int __init init_syscall_trace(struct trace_event_call *call)
 	return id;
 }
 
+static struct trace_event_fields __refdata syscall_enter_fields_array[] = {
+	SYSCALL_FIELD(int, __syscall_nr),
+	{ .type = TRACE_FUNCTION_TYPE,
+	  .define_fields = syscall_enter_define_fields },
+	{}
+};
+
 struct trace_event_functions enter_syscall_print_funcs = {
 	.trace		= print_syscall_enter,
 };
@@ -518,7 +505,7 @@ struct trace_event_functions exit_syscall_print_funcs = {
 struct trace_event_class __refdata event_class_syscall_enter = {
 	.system		= "syscalls",
 	.reg		= syscall_enter_register,
-	.define_fields	= syscall_enter_define_fields,
+	.fields_array	= syscall_enter_fields_array,
 	.get_fields	= syscall_get_enter_fields,
 	.raw_init	= init_syscall_trace,
 };
@@ -526,7 +513,11 @@ struct trace_event_class __refdata event_class_syscall_enter = {
 struct trace_event_class __refdata event_class_syscall_exit = {
 	.system		= "syscalls",
 	.reg		= syscall_exit_register,
-	.define_fields	= syscall_exit_define_fields,
+	.fields_array	= (struct trace_event_fields[]){
+		SYSCALL_FIELD(int, __syscall_nr),
+		SYSCALL_FIELD(long, ret),
+		{}
+	},
 	.fields		= LIST_HEAD_INIT(event_class_syscall_exit.fields),
 	.raw_init	= init_syscall_trace,
 };
diff --git a/kernel/trace/trace_uprobe.c b/kernel/trace/trace_uprobe.c
index 2619bc5ed520..7885ebd23d0c 100644
--- a/kernel/trace/trace_uprobe.c
+++ b/kernel/trace/trace_uprobe.c
@@ -1528,12 +1528,17 @@ static struct trace_event_functions uprobe_funcs = {
 	.trace		= print_uprobe_event
 };
 
+static struct trace_event_fields uprobe_fields_array[] = {
+	{ .type = TRACE_FUNCTION_TYPE,
+	  .define_fields = uprobe_event_define_fields },
+	{}
+};
+
 static inline void init_trace_event_call(struct trace_uprobe *tu)
 {
 	struct trace_event_call *call = trace_probe_event_call(&tu->tp);
-
 	call->event.funcs = &uprobe_funcs;
-	call->class->define_fields = uprobe_event_define_fields;
+	call->class->fields_array = uprobe_fields_array;
 
 	call->flags = TRACE_EVENT_FL_UPROBE | TRACE_EVENT_FL_CAP_ANY;
 	call->class->reg = trace_uprobe_register;
generated by cgit-pink 1.4.1 (git 2.36.1) at 2024-10-08 06:52:22 +0000