Cleanup: Move headers from toplevel to include/lttng/

[lttng-modules.git] / include / lttng / cpuhotplug.h

diff --git a/include/lttng/cpuhotplug.h b/include/lttng/cpuhotplug.h
new file mode 100644 (file)
index 0000000..5c2f256
--- /dev/null
+++ b/include/lttng/cpuhotplug.h
@@ -0,0 +1,52 @@
+/* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only)
+ *
+ * lttng/cpuhotplug.h
+ *
+ * Copyright (C) 2016 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ */
+
+#ifndef LTTNG_CPUHOTPLUG_H
+#define LTTNG_CPUHOTPLUG_H
+
+struct lttng_cpuhp_node;
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0))
+
+#include <linux/cpuhotplug.h>
+
+enum lttng_cpuhp_component {
+       LTTNG_RING_BUFFER_FRONTEND,
+       LTTNG_RING_BUFFER_BACKEND,
+       LTTNG_RING_BUFFER_ITER,
+       LTTNG_CONTEXT_PERF_COUNTERS,
+};
+
+struct lttng_cpuhp_node {
+       enum lttng_cpuhp_component component;
+       struct hlist_node node;
+};
+
+extern enum cpuhp_state lttng_hp_prepare;
+extern enum cpuhp_state lttng_hp_online;
+
+int lttng_cpuhp_rb_backend_prepare(unsigned int cpu,
+                struct lttng_cpuhp_node *node);
+int lttng_cpuhp_rb_frontend_dead(unsigned int cpu,
+               struct lttng_cpuhp_node *node);
+int lttng_cpuhp_rb_frontend_online(unsigned int cpu,
+               struct lttng_cpuhp_node *node);
+int lttng_cpuhp_rb_frontend_offline(unsigned int cpu,
+               struct lttng_cpuhp_node *node);
+int lttng_cpuhp_rb_iter_online(unsigned int cpu,
+               struct lttng_cpuhp_node *node);
+
+/* Ring buffer is a separate library. */
+void lttng_rb_set_hp_prepare(enum cpuhp_state val);
+void lttng_rb_set_hp_online(enum cpuhp_state val);
+
+extern enum cpuhp_state lttng_rb_hp_prepare;
+extern enum cpuhp_state lttng_rb_hp_online;
+
+#endif
+
+#endif /* LTTNG_CPUHOTPLUG_H */