UST comm ABI: Add padding, push version to 2.0

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

diff --git a/include/lttng/ust-abi.h b/include/lttng/ust-abi.h
index 2f21e49b1d4f9efe69ca9395aa50a237ef399376..f726c8b576e707a69a0cd3508f77c184d21706c4 100644 (file)
--- a/include/lttng/ust-abi.h
+++ b/include/lttng/ust-abi.h
@@ -22,8 +22,8 @@
 
 #define LTTNG_UST_SYM_NAME_LEN 256
 
-#define LTTNG_UST_COMM_VERSION_MAJOR           0
-#define LTTNG_UST_COMM_VERSION_MINOR           1
+#define LTTNG_UST_COMM_VERSION_MAJOR           2
+#define LTTNG_UST_COMM_VERSION_MINOR           0
 
 enum lttng_ust_instrumentation {
        LTTNG_UST_TRACEPOINT            = 0,
@@ -47,6 +47,7 @@ struct lttng_ust_tracer_version {
        uint32_t patchlevel;
 };
 
+#define LTTNG_UST_CHANNEL_PADDING      LTTNG_UST_SYM_NAME_LEN + 32
 struct lttng_ust_channel {
        int overwrite;                          /* 1: overwrite, 0: discard */
        uint64_t subbuf_size;                   /* in bytes */
@@ -54,20 +55,32 @@ struct lttng_ust_channel {
        unsigned int switch_timer_interval;     /* usecs */
        unsigned int read_timer_interval;       /* usecs */
        enum lttng_ust_output output;           /* output mode */
+       char padding[LTTNG_UST_CHANNEL_PADDING];
 };
 
+#define LTTNG_UST_STREAM_PADDING1      16
+#define LTTNG_UST_STREAM_PADDING2      LTTNG_UST_SYM_NAME_LEN + 32
 struct lttng_ust_stream {
+       char padding[LTTNG_UST_STREAM_PADDING1];
+
+       union {
+               char padding[LTTNG_UST_STREAM_PADDING2];
+       } u;
 };
 
+#define LTTNG_UST_EVENT_PADDING1       16
+#define LTTNG_UST_EVENT_PADDING2       LTTNG_UST_SYM_NAME_LEN + 32
 struct lttng_ust_event {
        enum lttng_ust_instrumentation instrumentation;
        char name[LTTNG_UST_SYM_NAME_LEN];      /* event name */
 
        enum lttng_ust_loglevel_type loglevel_type;
        int loglevel;   /* value, -1: all */
+       char padding[LTTNG_UST_EVENT_PADDING1];
 
        /* Per instrumentation type configuration */
        union {
+               char padding[LTTNG_UST_EVENT_PADDING2];
        } u;
 };
 
@@ -78,15 +91,21 @@ enum lttng_ust_context_type {
        LTTNG_UST_CONTEXT_PROCNAME              = 3,
 };
 
+#define LTTNG_UST_CONTEXT_PADDING1     16
+#define LTTNG_UST_CONTEXT_PADDING2     LTTNG_UST_SYM_NAME_LEN + 32
 struct lttng_ust_context {
        enum lttng_ust_context_type ctx;
+       char padding[LTTNG_UST_CONTEXT_PADDING1];
+
        union {
+               char padding[LTTNG_UST_CONTEXT_PADDING2];
        } u;
 };
 
 /*
  * Tracer channel attributes.
  */
+#define LTTNG_UST_CHANNEL_ATTR_PADDING LTTNG_UST_SYM_NAME_LEN + 32
 struct lttng_ust_channel_attr {
        int overwrite;                          /* 1: overwrite, 0: discard */
        uint64_t subbuf_size;                   /* bytes */
@@ -94,26 +113,38 @@ struct lttng_ust_channel_attr {
        unsigned int switch_timer_interval;     /* usec */
        unsigned int read_timer_interval;       /* usec */
        enum lttng_ust_output output;           /* splice, mmap */
+       char padding[LTTNG_UST_CHANNEL_ATTR_PADDING];
 };
 
+#define LTTNG_UST_TRACEPOINT_ITER_PADDING      16
 struct lttng_ust_tracepoint_iter {
        char name[LTTNG_UST_SYM_NAME_LEN];      /* provider:name */
        int loglevel;
+       char padding[LTTNG_UST_TRACEPOINT_ITER_PADDING];
 };
 
+#define LTTNG_UST_OBJECT_DATA_PADDING          LTTNG_UST_SYM_NAME_LEN + 32
 struct lttng_ust_object_data {
        int handle;
        int shm_fd;
        int wait_fd;
        uint64_t memory_map_size;
+       char padding[LTTNG_UST_OBJECT_DATA_PADDING];
 };
 
 enum lttng_ust_calibrate_type {
        LTTNG_UST_CALIBRATE_TRACEPOINT,
 };
 
+#define LTTNG_UST_CALIBRATE_PADDING1   16
+#define LTTNG_UST_CALIBRATE_PADDING2   LTTNG_UST_SYM_NAME_LEN + 32
 struct lttng_ust_calibrate {
        enum lttng_ust_calibrate_type type;     /* type (input) */
+       char padding[LTTNG_UST_CALIBRATE_PADDING1];
+
+       union {
+               char padding[LTTNG_UST_CALIBRATE_PADDING2];
+       } u;
 };
 
 #define _UST_CMD(minor)                                (minor)