Rename "tsc" to "timestamp"

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

diff --git a/lttng-clock.c b/lttng-clock.c
deleted file mode 100644 (file)
index 7512a3f..0000000
--- a/lttng-clock.c
+++ /dev/null
@@ -1,97 +0,0 @@
-/* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only)
- *
- * lttng-clock.c
- *
- * Copyright (C) 2014 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- */
-
-#include <linux/module.h>
-#include <linux/kmod.h>
-#include <linux/mutex.h>
-
-#include <wrapper/trace-clock.h>
-#include <lttng/events.h>
-#include <lttng/tracer.h>
-
-struct lttng_trace_clock *lttng_trace_clock;
-EXPORT_SYMBOL_GPL(lttng_trace_clock);
-
-static DEFINE_MUTEX(clock_mutex);
-static struct module *lttng_trace_clock_mod;   /* plugin */
-static int clock_used;                         /* refcount */
-
-int lttng_clock_register_plugin(struct lttng_trace_clock *ltc,
-               struct module *mod)
-{
-       int ret = 0;
-
-       mutex_lock(&clock_mutex);
-       if (clock_used) {
-               ret = -EBUSY;
-               goto end;
-       }
-       if (lttng_trace_clock_mod) {
-               ret = -EEXIST;
-               goto end;
-       }
-       /* set clock */
-       WRITE_ONCE(lttng_trace_clock, ltc);
-       lttng_trace_clock_mod = mod;
-end:
-       mutex_unlock(&clock_mutex);
-       return ret;
-}
-EXPORT_SYMBOL_GPL(lttng_clock_register_plugin);
-
-void lttng_clock_unregister_plugin(struct lttng_trace_clock *ltc,
-               struct module *mod)
-{
-       mutex_lock(&clock_mutex);
-       WARN_ON_ONCE(clock_used);
-       if (!lttng_trace_clock_mod) {
-               goto end;
-       }
-       WARN_ON_ONCE(lttng_trace_clock_mod != mod);
-
-       WRITE_ONCE(lttng_trace_clock, NULL);
-       lttng_trace_clock_mod = NULL;
-end:
-       mutex_unlock(&clock_mutex);
-}
-EXPORT_SYMBOL_GPL(lttng_clock_unregister_plugin);
-
-void lttng_clock_ref(void)
-{
-       mutex_lock(&clock_mutex);
-       clock_used++;
-       if (lttng_trace_clock_mod) {
-               int ret;
-
-               ret = try_module_get(lttng_trace_clock_mod);
-               if (!ret) {
-                       printk(KERN_ERR "LTTng-clock cannot get clock plugin module\n");
-                       WRITE_ONCE(lttng_trace_clock, NULL);
-                       lttng_trace_clock_mod = NULL;
-               }
-       }
-       mutex_unlock(&clock_mutex);
-}
-EXPORT_SYMBOL_GPL(lttng_clock_ref);
-
-void lttng_clock_unref(void)
-{
-       mutex_lock(&clock_mutex);
-       clock_used--;
-       if (lttng_trace_clock_mod)
-               module_put(lttng_trace_clock_mod);
-       mutex_unlock(&clock_mutex);
-}
-EXPORT_SYMBOL_GPL(lttng_clock_unref);
-
-MODULE_LICENSE("GPL and additional rights");
-MODULE_AUTHOR("Mathieu Desnoyers <mathieu.desnoyers@efficios.com>");
-MODULE_DESCRIPTION("LTTng Clock");
-MODULE_VERSION(__stringify(LTTNG_MODULES_MAJOR_VERSION) "."
-       __stringify(LTTNG_MODULES_MINOR_VERSION) "."
-       __stringify(LTTNG_MODULES_PATCHLEVEL_VERSION)
-       LTTNG_MODULES_EXTRAVERSION);