Version 2.9.15

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

diff --git a/lttng-events.c b/lttng-events.c
index 0a8b2a68b0445017603bd1bb37294d72d6024dc6..da1d38e67b5ef80e4d381f15ceed0097093837bd 100644 (file)
--- a/lttng-events.c
+++ b/lttng-events.c
@@ -87,7 +87,12 @@ int _lttng_field_statedump(struct lttng_session *session,
 
 void synchronize_trace(void)
 {
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,1,0))
+       synchronize_rcu();
+#else
        synchronize_sched();
+#endif
+
 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
 #ifdef CONFIG_PREEMPT_RT_FULL
        synchronize_rcu();
@@ -1115,8 +1120,8 @@ int lttng_session_list_tracker_pids(struct lttng_session *session)
                ret = PTR_ERR(tracker_pids_list_file);
                goto file_error;
        }
-       if (atomic_long_add_unless(&session->file->f_count,
-               1, INT_MAX) == INT_MAX) {
+       if (!atomic_long_add_unless(&session->file->f_count, 1, LONG_MAX)) {
+               ret = -EOVERFLOW;
                goto refcount_error;
        }
        ret = lttng_tracker_pids_list_fops.open(NULL, tracker_pids_list_file);
@@ -2644,7 +2649,7 @@ void lttng_transport_unregister(struct lttng_transport *transport)
 }
 EXPORT_SYMBOL_GPL(lttng_transport_unregister);
 
-#if (defined(CONFIG_HOTPLUG_CPU) && (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)))
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0))
 
 enum cpuhp_state lttng_hp_prepare;
 enum cpuhp_state lttng_hp_online;
@@ -2760,7 +2765,7 @@ static void __exit lttng_exit_cpu_hotplug(void)
        cpuhp_remove_multi_state(lttng_hp_prepare);
 }
 
-#else /* #if (CONFIG_HOTPLUG_CPU && (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0))) */
+#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)) */
 static int lttng_init_cpu_hotplug(void)
 {
        return 0;
@@ -2768,7 +2773,7 @@ static int lttng_init_cpu_hotplug(void)
 static void lttng_exit_cpu_hotplug(void)
 {
 }
-#endif /* #else #if (CONFIG_HOTPLUG_CPU && (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0))) */
+#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)) */
 
 
 static int __init lttng_events_init(void)
@@ -2807,6 +2812,22 @@ static int __init lttng_events_init(void)
        ret = lttng_init_cpu_hotplug();
        if (ret)
                goto error_hotplug;
+       printk(KERN_NOTICE "LTTng: Loaded modules v%s.%s.%s%s (%s)%s%s\n",
+               __stringify(LTTNG_MODULES_MAJOR_VERSION),
+               __stringify(LTTNG_MODULES_MINOR_VERSION),
+               __stringify(LTTNG_MODULES_PATCHLEVEL_VERSION),
+               LTTNG_MODULES_EXTRAVERSION,
+               LTTNG_VERSION_NAME,
+#ifdef LTTNG_EXTRA_VERSION_GIT
+               LTTNG_EXTRA_VERSION_GIT[0] == '\0' ? "" : " - " LTTNG_EXTRA_VERSION_GIT,
+#else
+               "",
+#endif
+#ifdef LTTNG_EXTRA_VERSION_NAME
+               LTTNG_EXTRA_VERSION_NAME[0] == '\0' ? "" : " - " LTTNG_EXTRA_VERSION_NAME);
+#else
+               "");
+#endif
        return 0;
 
 error_hotplug:
@@ -2819,6 +2840,22 @@ error_kmem:
        lttng_tracepoint_exit();
 error_tp:
        lttng_context_exit();
+       printk(KERN_NOTICE "LTTng: Failed to load modules v%s.%s.%s%s (%s)%s%s\n",
+               __stringify(LTTNG_MODULES_MAJOR_VERSION),
+               __stringify(LTTNG_MODULES_MINOR_VERSION),
+               __stringify(LTTNG_MODULES_PATCHLEVEL_VERSION),
+               LTTNG_MODULES_EXTRAVERSION,
+               LTTNG_VERSION_NAME,
+#ifdef LTTNG_EXTRA_VERSION_GIT
+               LTTNG_EXTRA_VERSION_GIT[0] == '\0' ? "" : " - " LTTNG_EXTRA_VERSION_GIT,
+#else
+               "",
+#endif
+#ifdef LTTNG_EXTRA_VERSION_NAME
+               LTTNG_EXTRA_VERSION_NAME[0] == '\0' ? "" : " - " LTTNG_EXTRA_VERSION_NAME);
+#else
+               "");
+#endif
        return ret;
 }
 
@@ -2836,10 +2873,33 @@ static void __exit lttng_events_exit(void)
        kmem_cache_destroy(event_cache);
        lttng_tracepoint_exit();
        lttng_context_exit();
+       printk(KERN_NOTICE "LTTng: Unloaded modules v%s.%s.%s%s (%s)%s%s\n",
+               __stringify(LTTNG_MODULES_MAJOR_VERSION),
+               __stringify(LTTNG_MODULES_MINOR_VERSION),
+               __stringify(LTTNG_MODULES_PATCHLEVEL_VERSION),
+               LTTNG_MODULES_EXTRAVERSION,
+               LTTNG_VERSION_NAME,
+#ifdef LTTNG_EXTRA_VERSION_GIT
+               LTTNG_EXTRA_VERSION_GIT[0] == '\0' ? "" : " - " LTTNG_EXTRA_VERSION_GIT,
+#else
+               "",
+#endif
+#ifdef LTTNG_EXTRA_VERSION_NAME
+               LTTNG_EXTRA_VERSION_NAME[0] == '\0' ? "" : " - " LTTNG_EXTRA_VERSION_NAME);
+#else
+               "");
+#endif
 }
 
 module_exit(lttng_events_exit);
 
+#include "extra_version/patches.i"
+#ifdef LTTNG_EXTRA_VERSION_GIT
+MODULE_INFO(extra_version_git, LTTNG_EXTRA_VERSION_GIT);
+#endif
+#ifdef LTTNG_EXTRA_VERSION_NAME
+MODULE_INFO(extra_version_name, LTTNG_EXTRA_VERSION_NAME);
+#endif
 MODULE_LICENSE("GPL and additional rights");
 MODULE_AUTHOR("Mathieu Desnoyers <mathieu.desnoyers@efficios.com>");
 MODULE_DESCRIPTION("LTTng Events");