fix: KVM: x86/mmu: Make kvm_mmu_page definition and accessor internal-only (v5.9)

[lttng-modules.git] / lttng-events.h

diff --git a/lttng-events.h b/lttng-events.h
index 2b1370520ecd85ab4d39364586ee08fe949d1f6a..9ab087be6b666e0ac788edf4c721d7b6124444c6 100644 (file)
--- a/lttng-events.h
+++ b/lttng-events.h
@@ -1,34 +1,22 @@
-#ifndef _LTTNG_EVENTS_H
-#define _LTTNG_EVENTS_H
-
-/*
+/* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1)
+ *
  * lttng-events.h
  *
  * Holds LTTng per-session event registry.
  *
  * Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; only
- * version 2.1 of the License.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#ifndef _LTTNG_EVENTS_H
+#define _LTTNG_EVENTS_H
+
 #include <linux/version.h>
 #include <linux/list.h>
 #include <linux/kprobes.h>
 #include <linux/kref.h>
 #include <lttng-cpuhotplug.h>
-#include <wrapper/uuid.h>
+#include <linux/uuid.h>
+#include <wrapper/uprobes.h>
 #include <lttng-tracer.h>
 #include <lttng-abi.h>
 #include <lttng-abi-old.h>
@@ -297,6 +285,13 @@ struct lttng_enabler_ref {
        struct lttng_enabler *ref;              /* backward ref */
 };
 
+struct lttng_uprobe_handler {
+       struct lttng_event *event;
+       loff_t offset;
+       struct uprobe_consumer up_consumer;
+       struct list_head node;
+};
+
 /*
  * lttng_event structure is referred to by the tracing fast path. It must be
  * kept small.
@@ -320,8 +315,9 @@ struct lttng_event {
                        char *symbol_name;
                } kretprobe;
                struct {
-                       char *symbol_name;
-               } ftrace;
+                       struct inode *inode;
+                       struct list_head head;
+               } uprobe;
        } u;
        struct list_head list;          /* Event list in session */
        unsigned int metadata_dumped:1;
@@ -478,6 +474,7 @@ struct lttng_metadata_stream {
        struct list_head list;          /* Stream list */
        struct lttng_transport *transport;
        uint64_t version;               /* Current version of the metadata cache */
+       bool coherent;                  /* Stream in a coherent state */
 };
 
 #define LTTNG_DYNAMIC_LEN_STACK_SIZE   128
@@ -522,12 +519,15 @@ struct lttng_session {
        struct list_head enablers_head;
        /* Hash table of events */
        struct lttng_event_ht events_ht;
+       char name[LTTNG_KERNEL_SESSION_NAME_LEN];
+       char creation_time[LTTNG_KERNEL_SESSION_CREATION_TIME_ISO8601_LEN];
 };
 
 struct lttng_metadata_cache {
        char *data;                     /* Metadata cache */
        unsigned int cache_alloc;       /* Metadata allocated size (bytes) */
        unsigned int metadata_written;  /* Number of bytes written in metadata cache */
+       atomic_t producing;             /* Metadata being produced (incomplete) */
        struct kref refcount;           /* Metadata cache usage */
        struct list_head metadata_stream;       /* Metadata stream list */
        uuid_le uuid;                   /* Trace session unique ID (copy) */
@@ -608,7 +608,7 @@ int lttng_probes_init(void);
 void lttng_probes_exit(void);
 
 int lttng_metadata_output_channel(struct lttng_metadata_stream *stream,
-               struct channel *chan);
+               struct channel *chan, bool *coherent);
 
 int lttng_pid_tracker_get_node_pid(const struct lttng_pid_hash_node *node);
 struct lttng_pid_tracker *lttng_pid_tracker_create(void);
@@ -784,6 +784,42 @@ void lttng_kprobes_destroy_private(struct lttng_event *event)
 }
 #endif
 
+int lttng_event_add_callsite(struct lttng_event *event,
+       struct lttng_kernel_event_callsite *callsite);
+
+#ifdef CONFIG_UPROBES
+int lttng_uprobes_register(const char *name,
+       int fd, struct lttng_event *event);
+int lttng_uprobes_add_callsite(struct lttng_event *event,
+       struct lttng_kernel_event_callsite *callsite);
+void lttng_uprobes_unregister(struct lttng_event *event);
+void lttng_uprobes_destroy_private(struct lttng_event *event);
+#else
+static inline
+int lttng_uprobes_register(const char *name,
+       int fd, struct lttng_event *event)
+{
+       return -ENOSYS;
+}
+
+static inline
+int lttng_uprobes_add_callsite(struct lttng_event *event,
+       struct lttng_kernel_event_callsite *callsite)
+{
+       return -ENOSYS;
+}
+
+static inline
+void lttng_uprobes_unregister(struct lttng_event *event)
+{
+}
+
+static inline
+void lttng_uprobes_destroy_private(struct lttng_event *event)
+{
+}
+#endif
+
 #ifdef CONFIG_KRETPROBES
 int lttng_kretprobes_register(const char *name,
                const char *symbol_name,
@@ -825,32 +861,6 @@ int lttng_kretprobes_event_enable_state(struct lttng_event *event,
 }
 #endif
 
-#if defined(CONFIG_DYNAMIC_FTRACE) && !defined(LTTNG_FTRACE_MISSING_HEADER)
-int lttng_ftrace_register(const char *name,
-                         const char *symbol_name,
-                         struct lttng_event *event);
-void lttng_ftrace_unregister(struct lttng_event *event);
-void lttng_ftrace_destroy_private(struct lttng_event *event);
-#else
-static inline
-int lttng_ftrace_register(const char *name,
-                         const char *symbol_name,
-                         struct lttng_event *event)
-{
-       return -ENOSYS;
-}
-
-static inline
-void lttng_ftrace_unregister(struct lttng_event *event)
-{
-}
-
-static inline
-void lttng_ftrace_destroy_private(struct lttng_event *event)
-{
-}
-#endif
-
 int lttng_calibrate(struct lttng_kernel_calibrate *calibrate);
 
 extern const struct file_operations lttng_tracepoint_list_fops;