X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=lib%2Fringbuffer%2Fbackend_types.h;h=04cecb92707abf4b6a80101b15a4848717e7acd1;hb=2d0428212cbfa3f8428feee160b095f48c2ac974;hp=4578185c3c75d8a1fb307a5e78ddbb1567bbd878;hpb=5a8fd222992df9bbb709836e5bf4ca053dd776c3;p=lttng-modules.git

diff --git a/lib/ringbuffer/backend_types.h b/lib/ringbuffer/backend_types.h
index 4578185c..04cecb92 100644
--- a/lib/ringbuffer/backend_types.h
+++ b/lib/ringbuffer/backend_types.h
@@ -1,22 +1,23 @@
-#ifndef _LINUX_RING_BUFFER_BACKEND_TYPES_H
-#define _LINUX_RING_BUFFER_BACKEND_TYPES_H
-
-/*
- * linux/ringbuffer/backend_types.h
+/* SPDX-License-Identifier: (GPL-2.0 OR LGPL-2.1)
  *
- * Copyright (C) 2008-2010 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * lib/ringbuffer/backend_types.h
  *
  * Ring buffer backend (types).
  *
- * Dual LGPL v2.1/GPL v2 license.
+ * Copyright (C) 2008-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  */
 
+#ifndef _LIB_RING_BUFFER_BACKEND_TYPES_H
+#define _LIB_RING_BUFFER_BACKEND_TYPES_H
+
 #include <linux/cpumask.h>
 #include <linux/types.h>
+#include <lttng-kernel-version.h>
+#include <lttng-cpuhotplug.h>
 
 struct lib_ring_buffer_backend_page {
 	void *virt;			/* page virtual address (cached) */
-	struct page *page;		/* pointer to page structure */
+	unsigned long pfn;		/* page frame number */
 };
 
 struct lib_ring_buffer_backend_pages {
@@ -32,6 +33,16 @@ struct lib_ring_buffer_backend_subbuffer {
 	unsigned long id;		/* backend subbuffer identifier */
 };
 
+struct lib_ring_buffer_backend_counts {
+	/*
+	 * Counter specific to the sub-buffer location within the ring buffer.
+	 * The actual sequence number of the packet within the entire ring
+	 * buffer can be derived from the formula nr_subbuffers * seq_cnt +
+	 * subbuf_idx.
+	 */
+	uint64_t seq_cnt;		/* packet sequence number */
+};
+
 /*
  * Forward declaration of frontend-specific channel and ring_buffer.
  */
@@ -43,6 +54,8 @@ struct lib_ring_buffer_backend {
 	struct lib_ring_buffer_backend_subbuffer *buf_wsb;
 	/* ring_buffer_backend_subbuffer for reader */
 	struct lib_ring_buffer_backend_subbuffer buf_rsb;
+	/* Array of lib_ring_buffer_backend_counts for the packet counter */
+	struct lib_ring_buffer_backend_counts *buf_cnt;
 	/*
 	 * Pointer array of backend pages, for whole buffer.
 	 * Indexed by ring_buffer_backend_subbuffer identifier (id) index.
@@ -71,7 +84,13 @@ struct channel_backend {
 	unsigned long num_subbuf;	/* Number of sub-buffers for writer */
 	u64 start_tsc;			/* Channel creation TSC value */
 	void *priv;			/* Client-specific information */
+	void *priv_ops;			/* Client-specific ops pointer */
+	void (*release_priv_ops)(void *priv_ops);
+#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0))
+	struct lttng_cpuhp_node cpuhp_prepare;	/* CPU hotplug prepare */
+#else
 	struct notifier_block cpu_hp_notifier;	 /* CPU hotplug notifier */
+#endif
 	/*
 	 * We need to copy config because the module containing the
 	 * source config can vanish before the last reference to this
@@ -82,4 +101,4 @@ struct channel_backend {
 	char name[NAME_MAX];		/* Channel name */
 };
 
-#endif /* _LINUX_RING_BUFFER_BACKEND_TYPES_H */
+#endif /* _LIB_RING_BUFFER_BACKEND_TYPES_H */