Fix: timer_expire_entry changed in 4.19.312

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

diff --git a/lttng-probes.c b/lttng-probes.c
deleted file mode 100644 (file)
index 15e05be..0000000
--- a/lttng-probes.c
+++ /dev/null
@@ -1,164 +0,0 @@
-/*
- * lttng-probes.c
- *
- * Copyright 2010-2011 (c) - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * Holds LTTng probes registry.
- *
- * Dual LGPL v2.1/GPL v2 license.
- */
-
-#include <linux/module.h>
-#include <linux/list.h>
-#include <linux/mutex.h>
-#include <linux/seq_file.h>
-
-#include "lttng-events.h"
-
-static LIST_HEAD(probe_list);
-static DEFINE_MUTEX(probe_mutex);
-
-static
-const struct lttng_event_desc *find_event(const char *name)
-{
-       struct lttng_probe_desc *probe_desc;
-       int i;
-
-       list_for_each_entry(probe_desc, &probe_list, head) {
-               for (i = 0; i < probe_desc->nr_events; i++) {
-                       if (!strcmp(probe_desc->event_desc[i]->name, name))
-                               return probe_desc->event_desc[i];
-               }
-       }
-       return NULL;
-}
-
-int lttng_probe_register(struct lttng_probe_desc *desc)
-{
-       int ret = 0;
-       int i;
-
-       mutex_lock(&probe_mutex);
-       /*
-        * TODO: This is O(N^2). Turn into a hash table when probe registration
-        * overhead becomes an issue.
-        */
-       for (i = 0; i < desc->nr_events; i++) {
-               if (find_event(desc->event_desc[i]->name)) {
-                       ret = -EEXIST;
-                       goto end;
-               }
-       }
-       list_add(&desc->head, &probe_list);
-end:
-       mutex_unlock(&probe_mutex);
-       return ret;
-}
-EXPORT_SYMBOL_GPL(lttng_probe_register);
-
-void lttng_probe_unregister(struct lttng_probe_desc *desc)
-{
-       mutex_lock(&probe_mutex);
-       list_del(&desc->head);
-       mutex_unlock(&probe_mutex);
-}
-EXPORT_SYMBOL_GPL(lttng_probe_unregister);
-
-const struct lttng_event_desc *lttng_event_get(const char *name)
-{
-       const struct lttng_event_desc *event;
-       int ret;
-
-       mutex_lock(&probe_mutex);
-       event = find_event(name);
-       mutex_unlock(&probe_mutex);
-       if (!event)
-               return NULL;
-       ret = try_module_get(event->owner);
-       WARN_ON_ONCE(!ret);
-       return event;
-}
-EXPORT_SYMBOL_GPL(lttng_event_get);
-
-void lttng_event_put(const struct lttng_event_desc *event)
-{
-       module_put(event->owner);
-}
-EXPORT_SYMBOL_GPL(lttng_event_put);
-
-static
-void *tp_list_start(struct seq_file *m, loff_t *pos)
-{
-       struct lttng_probe_desc *probe_desc;
-       int iter = 0, i;
-
-       mutex_lock(&probe_mutex);
-       list_for_each_entry(probe_desc, &probe_list, head) {
-               for (i = 0; i < probe_desc->nr_events; i++) {
-                       if (iter++ >= *pos)
-                               return (void *) probe_desc->event_desc[i];
-               }
-       }
-       /* End of list */
-       return NULL;
-}
-
-static
-void *tp_list_next(struct seq_file *m, void *p, loff_t *ppos)
-{
-       struct lttng_probe_desc *probe_desc;
-       int iter = 0, i;
-
-       (*ppos)++;
-       list_for_each_entry(probe_desc, &probe_list, head) {
-               for (i = 0; i < probe_desc->nr_events; i++) {
-                       if (iter++ >= *ppos)
-                               return (void *) probe_desc->event_desc[i];
-               }
-       }
-       /* End of list */
-       return NULL;
-}
-
-static
-void tp_list_stop(struct seq_file *m, void *p)
-{
-       mutex_unlock(&probe_mutex);
-}
-
-static
-int tp_list_show(struct seq_file *m, void *p)
-{
-       const struct lttng_event_desc *probe_desc = p;
-
-       /*
-        * Don't export lttng internal event: lttng_metadata.
-        */
-       if (!strcmp(probe_desc->name, "lttng_metadata"))
-               return 0;
-       seq_printf(m,   "event { name = %s; };\n",
-                  probe_desc->name);
-       return 0;
-}
-
-static
-const struct seq_operations lttng_tracepoint_list_seq_ops = {
-       .start = tp_list_start,
-       .next = tp_list_next,
-       .stop = tp_list_stop,
-       .show = tp_list_show,
-};
-
-static
-int lttng_tracepoint_list_open(struct inode *inode, struct file *file)
-{
-       return seq_open(file, &lttng_tracepoint_list_seq_ops);
-}
-
-const struct file_operations lttng_tracepoint_list_fops = {
-       .owner = THIS_MODULE,
-       .open = lttng_tracepoint_list_open,
-       .read = seq_read,
-       .llseek = seq_lseek,
-       .release = seq_release,
-};