Add V4L2 instrumentation

[lttng-modules.git] / lttng-statedump-impl.c

diff --git a/lttng-statedump-impl.c b/lttng-statedump-impl.c
index 04acf6eff3409beb78944fad9476d44c74098cec..40eab8e54a4c0fa3488108bb120edcf44cb45985 100644 (file)
--- a/lttng-statedump-impl.c
+++ b/lttng-statedump-impl.c
@@ -47,11 +47,15 @@
 #include <linux/mutex.h>
 
 #include "lttng-events.h"
+#include "lttng-tracer.h"
 #include "wrapper/irqdesc.h"
 #include "wrapper/spinlock.h"
 #include "wrapper/fdtable.h"
+#include "wrapper/nsproxy.h"
+#include "wrapper/irq.h"
+#include "wrapper/tracepoint.h"
 
-#ifdef CONFIG_GENERIC_HARDIRQS
+#ifdef CONFIG_LTTNG_HAS_LIST_IRQ
 #include <linux/irq.h>
 #endif
 
@@ -243,7 +247,7 @@ int lttng_enumerate_vm_maps(struct lttng_session *session)
 }
 #endif
 
-#ifdef CONFIG_GENERIC_HARDIRQS
+#ifdef CONFIG_LTTNG_HAS_LIST_IRQ
 
 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,39))
 #define irq_desc_get_chip(desc) get_irq_desc_chip(desc)
@@ -276,7 +280,7 @@ void lttng_list_interrupts(struct lttng_session *session)
 }
 #else
 static inline
-void list_interrupts(struct lttng_session *session)
+void lttng_list_interrupts(struct lttng_session *session)
 {
 }
 #endif
@@ -295,7 +299,7 @@ void lttng_statedump_process_ns(struct lttng_session *session,
        rcu_read_lock();
        proxy = task_nsproxy(p);
        if (proxy) {
-               pid_ns = proxy->pid_ns;
+               pid_ns = lttng_get_proxy_pid_ns(proxy);
                do {
                        trace_lttng_statedump_process_state(session,
                                p, type, mode, submode, status, pid_ns);
@@ -380,7 +384,6 @@ int do_lttng_statedump(struct lttng_session *session)
 {
        int cpu;
 
-       printk(KERN_DEBUG "LTT state dump thread start\n");
        trace_lttng_statedump_start(session);
        lttng_enumerate_process_states(session);
        lttng_enumerate_file_descriptors(session);
@@ -408,7 +411,6 @@ int do_lttng_statedump(struct lttng_session *session)
        __wait_event(statedump_wq, (atomic_read(&kernel_threads_to_run) == 0));
        put_online_cpus();
        /* Our work is done */
-       printk(KERN_DEBUG "LTT state dump end\n");
        trace_lttng_statedump_end(session);
        return 0;
 }
@@ -418,11 +420,36 @@ int do_lttng_statedump(struct lttng_session *session)
  */
 int lttng_statedump_start(struct lttng_session *session)
 {
-       printk(KERN_DEBUG "LTTng: state dump begin\n");
        return do_lttng_statedump(session);
 }
 EXPORT_SYMBOL_GPL(lttng_statedump_start);
 
+static
+int __init lttng_statedump_init(void)
+{
+       /*
+        * Allow module to load even if the fixup cannot be done. This
+        * will allow seemless transition when the underlying issue fix
+        * is merged into the Linux kernel, and when tracepoint.c
+        * "tracepoint_module_notify" is turned into a static function.
+        */
+       (void) wrapper_lttng_fixup_sig(THIS_MODULE);
+       return 0;
+}
+
+module_init(lttng_statedump_init);
+
+static
+void __exit lttng_statedump_exit(void)
+{
+}
+
+module_exit(lttng_statedump_exit);
+
 MODULE_LICENSE("GPL and additional rights");
 MODULE_AUTHOR("Jean-Hugues Deschenes");
 MODULE_DESCRIPTION("Linux Trace Toolkit Next Generation Statedump");
+MODULE_VERSION(__stringify(LTTNG_MODULES_MAJOR_VERSION) "."
+       __stringify(LTTNG_MODULES_MINOR_VERSION) "."
+       __stringify(LTTNG_MODULES_PATCHLEVEL_VERSION)
+       LTTNG_MODULES_EXTRAVERSION);