#include <linux/fs.h>
#include <linux/compat.h>
-#include "../../wrapper/ringbuffer/backend.h"
-#include "../../wrapper/ringbuffer/frontend.h"
-#include "../../wrapper/ringbuffer/vfs.h"
-#include "../../wrapper/poll.h"
+#include <wrapper/ringbuffer/backend.h>
+#include <wrapper/ringbuffer/frontend.h>
+#include <wrapper/ringbuffer/vfs.h>
+#include <wrapper/poll.h>
+#include <lttng-tracer.h>
static int put_ulong(unsigned long val, unsigned long arg)
{
}
#endif
+/*
+ * This is not used by anonymous file descriptors. This code is left
+ * there if we ever want to implement an inode with open() operation.
+ */
int lib_ring_buffer_open(struct inode *inode, struct file *file,
struct lib_ring_buffer *buf)
{
switch (cmd) {
case RING_BUFFER_SNAPSHOT:
+ /*
+ * First, ensure we perform a "final" flush onto the
+ * stream. This will ensure we create a packet of
+ * padding if we encounter an empty packet. This ensures
+ * the time-stamps right before the snapshot is used as
+ * end of packet timestamp.
+ */
+ if (!buf->quiescent)
+ lib_ring_buffer_switch_remote_empty(buf);
return lib_ring_buffer_snapshot(buf, &buf->cons_snapshot,
&buf->prod_snapshot);
+ case RING_BUFFER_SNAPSHOT_SAMPLE_POSITIONS:
+ return lib_ring_buffer_snapshot_sample_positions(buf,
+ &buf->cons_snapshot, &buf->prod_snapshot);
case RING_BUFFER_SNAPSHOT_GET_CONSUMED:
return put_ulong(buf->cons_snapshot, arg);
case RING_BUFFER_SNAPSHOT_GET_PRODUCED:
switch (cmd) {
case RING_BUFFER_COMPAT_SNAPSHOT:
+ /*
+ * First, ensure we perform a "final" flush onto the
+ * stream. This will ensure we create a packet of
+ * padding if we encounter an empty packet. This ensures
+ * the time-stamps right before the snapshot is used as
+ * end of packet timestamp.
+ */
+ if (!buf->quiescent)
+ lib_ring_buffer_switch_remote_empty(buf);
return lib_ring_buffer_snapshot(buf, &buf->cons_snapshot,
&buf->prod_snapshot);
+ case RING_BUFFER_COMPAT_SNAPSHOT_SAMPLE_POSITIONS:
+ return lib_ring_buffer_snapshot_sample_positions(buf,
+ &buf->cons_snapshot, &buf->prod_snapshot);
case RING_BUFFER_COMPAT_SNAPSHOT_GET_CONSUMED:
return compat_put_ulong(buf->cons_snapshot, arg);
case RING_BUFFER_COMPAT_SNAPSHOT_GET_PRODUCED:
MODULE_LICENSE("GPL and additional rights");
MODULE_AUTHOR("Mathieu Desnoyers");
MODULE_DESCRIPTION("Ring Buffer Library VFS");
+MODULE_VERSION(__stringify(LTTNG_MODULES_MAJOR_VERSION) "."
+ __stringify(LTTNG_MODULES_MINOR_VERSION) "."
+ __stringify(LTTNG_MODULES_PATCHLEVEL_VERSION)
+ LTTNG_MODULES_EXTRAVERSION);