filter: Add missing padding

This will make future extensions to filter much easier.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>

diff --git a/include/lttng/ust-abi.h b/include/lttng/ust-abi.h
index 1ae1fa7dffa1e01cec7760296c0d37d75df30df3..1c6946f8715f4a92ad6d27746a2024ade822661f 100644 (file)
--- a/include/lttng/ust-abi.h
+++ b/include/lttng/ust-abi.h
@@ -173,10 +173,12 @@ struct lttng_ust_calibrate {
 };
 
 #define FILTER_BYTECODE_MAX_LEN                65536
+#define LTTNG_UST_FILTER_PADDING       32
 struct lttng_ust_filter_bytecode {
        uint32_t len;
        uint32_t reloc_offset;
        uint64_t seqnum;
+       char padding[LTTNG_UST_FILTER_PADDING];
        char data[0];
 };