Implement ring buffer clear

[lttng-modules.git] / lib / ringbuffer / vfs.h

diff --git a/lib/ringbuffer/vfs.h b/lib/ringbuffer/vfs.h
index b30b0f5814553f84915ab20a1982e062d5a20cc7..2061156dd1b19aba0ebab7cf01815ab4e7645f78 100644 (file)
--- a/lib/ringbuffer/vfs.h
+++ b/lib/ringbuffer/vfs.h
@@ -112,6 +112,8 @@ ssize_t vfs_lib_ring_buffer_splice_read(struct file *in, loff_t *ppos,
  * so it can be read again.
  */
 #define RING_BUFFER_METADATA_CACHE_DUMP                _IO(0xF6, 0x10)
+/* Clear ring buffer content. */
+#define RING_BUFFER_CLEAR                      _IO(0xF6, 0x11)
 
 #ifdef CONFIG_COMPAT
 /* Get a snapshot of the current ring buffer producer and consumer positions */
@@ -156,6 +158,9 @@ ssize_t vfs_lib_ring_buffer_splice_read(struct file *in, loff_t *ppos,
 /* Flush the current sub-buffer, even if empty. */
 #define RING_BUFFER_COMPAT_FLUSH_EMPTY                 \
        RING_BUFFER_FLUSH_EMPTY
+/* Clear ring buffer content. */
+#define RING_BUFFER_COMPAT_CLEAR                       \
+       RING_BUFFER_CLEAR
 #endif /* CONFIG_COMPAT */
 
 #endif /* _LIB_RING_BUFFER_VFS_H */