Implement event notifiers for syscalls

[lttng-modules.git] / include / lttng / abi.h

diff --git a/include/lttng/abi.h b/include/lttng/abi.h
index 0e3b5d15661a7e2cdc9b323c33d6020f07b6fd51..c7c6dc1949b8e2fa237de65f29ede9f7ac0a75d6 100644 (file)
--- a/include/lttng/abi.h
+++ b/include/lttng/abi.h
@@ -91,20 +91,20 @@ struct lttng_kernel_event_callsite {
 } __attribute__((packed));
 
 enum lttng_kernel_syscall_entryexit {
-       LTTNG_KERNEL_SYSCALL_ENTRYEXIT = 0,
-       LTTNG_KERNEL_SYSCALL_ENTRY = 1,         /* Not implemented. */
-       LTTNG_KERNEL_SYSCALL_EXIT = 2,          /* Not implemented. */
+       LTTNG_KERNEL_SYSCALL_ENTRYEXIT  = 0,
+       LTTNG_KERNEL_SYSCALL_ENTRY      = 1,
+       LTTNG_KERNEL_SYSCALL_EXIT       = 2,
 };
 
 enum lttng_kernel_syscall_abi {
        LTTNG_KERNEL_SYSCALL_ABI_ALL = 0,
-       LTTNG_KERNEL_SYSCALL_ABI_NATIVE = 1,    /* Not implemented. */
-       LTTNG_KERNEL_SYSCALL_ABI_COMPAT = 2,    /* Not implemented. */
+       LTTNG_KERNEL_SYSCALL_ABI_NATIVE = 1,
+       LTTNG_KERNEL_SYSCALL_ABI_COMPAT = 2,
 };
 
 enum lttng_kernel_syscall_match {
-       LTTNG_SYSCALL_MATCH_NAME = 0,
-       LTTNG_SYSCALL_MATCH_NR = 1,             /* Not implemented. */
+       LTTNG_KERNEL_SYSCALL_MATCH_NAME = 0,
+       LTTNG_KERNEL_SYSCALL_MATCH_NR = 1,              /* Not implemented. */
 };
 
 struct lttng_kernel_syscall {
@@ -137,6 +137,13 @@ struct lttng_kernel_event {
        } u;
 } __attribute__((packed));
 
+#define LTTNG_KERNEL_EVENT_NOTIFIER_PADDING1   16
+struct lttng_kernel_event_notifier {
+       struct lttng_kernel_event event;
+
+       char padding[LTTNG_KERNEL_EVENT_NOTIFIER_PADDING1];
+} __attribute__((packed));
+
 struct lttng_kernel_tracer_version {
        uint32_t major;
        uint32_t minor;
@@ -264,6 +271,7 @@ struct lttng_kernel_tracker_args {
 #define LTTNG_KERNEL_SYSCALL_LIST              _IO(0xF6, 0x4A)
 #define LTTNG_KERNEL_TRACER_ABI_VERSION                \
        _IOR(0xF6, 0x4B, struct lttng_kernel_tracer_abi_version)
+#define LTTNG_KERNEL_EVENT_NOTIFIER_GROUP_CREATE    _IO(0xF6, 0x4C)
 
 /* Session FD ioctl */
 /* lttng/abi-old.h reserve 0x50, 0x51, 0x52, and 0x53. */
@@ -306,12 +314,12 @@ struct lttng_kernel_tracker_args {
 #define LTTNG_KERNEL_CONTEXT                   \
        _IOW(0xF6, 0x71, struct lttng_kernel_context)
 
-/* Event, Channel and Session ioctl */
+/* Event, Event notifier, Channel and Session ioctl */
 /* lttng/abi-old.h reserve 0x80 and 0x81. */
 #define LTTNG_KERNEL_ENABLE                    _IO(0xF6, 0x82)
 #define LTTNG_KERNEL_DISABLE                   _IO(0xF6, 0x83)
 
-/* Event FD ioctl */
+/* Event and Event notifier FD ioctl */
 #define LTTNG_KERNEL_FILTER                    _IO(0xF6, 0x90)
 #define LTTNG_KERNEL_ADD_CALLSITE              _IO(0xF6, 0x91)
 
@@ -323,6 +331,12 @@ struct lttng_kernel_tracker_args {
 #define LTTNG_KERNEL_SESSION_UNTRACK_ID                \
        _IOR(0xF6, 0xA2, struct lttng_kernel_tracker_args)
 
+/* Event notifier group file descriptor ioctl */
+#define LTTNG_KERNEL_EVENT_NOTIFIER_CREATE \
+       _IOW(0xF6, 0xB0, struct lttng_kernel_event_notifier)
+#define LTTNG_KERNEL_EVENT_NOTIFIER_GROUP_NOTIFICATION_FD \
+       _IO(0xF6, 0xB1)
+
 /*
  * LTTng-specific ioctls for the lib ringbuffer.
  *