Rename liblttsessiondcomm to liblttng-sessiond-comm, install it.

[lttng-tools.git] / include / lttng-kernel.h

diff --git a/include/lttng-kernel.h b/include/lttng-kernel.h
index 1ce9fc5e4b96157cb23896805f2ca4bf58e8afca..95f003f2df2391423dff548e6bc90f3ce25c41e0 100644 (file)
--- a/include/lttng-kernel.h
+++ b/include/lttng-kernel.h
@@ -5,8 +5,8 @@
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
+ * as published by the Free Software Foundation; only version 2
+ * of the License.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -25,25 +25,52 @@
 
 #define LTTNG_SYM_NAME_LEN  128
 
-enum lttng_kernel_instrumentation {
-       LTTNG_KERNEL_TRACEPOINTS,
-       LTTNG_KERNEL_KPROBES,
-       LTTNG_KERNEL_FUNCTION_TRACER,
-};
-
 /*
  * LTTng DebugFS ABI structures.
+ *
+ * This is the kernel ABI copied from lttng-modules tree.
  */
 
-struct lttng_kernel_channel {
-       int overwrite;              /* 1: overwrite, 0: discard */
-       uint64_t subbuf_size;           /* in bytes */
-       uint64_t num_subbuf;
-       unsigned int switch_timer_interval; /* usecs */
-       unsigned int read_timer_interval;   /* usecs */
+enum lttng_kernel_instrumentation {
+       LTTNG_KERNEL_TRACEPOINT    = 0,
+       LTTNG_KERNEL_KPROBE        = 1,
+       LTTNG_KERNEL_FUNCTION      = 2,
+       LTTNG_KERNEL_KRETPROBE     = 3,
 };
 
-struct lttng_kernel_tracepoint {
+enum lttng_kernel_context_type {
+       LTTNG_KERNEL_CONTEXT_PID            = 0,
+       LTTNG_KERNEL_CONTEXT_PERF_COUNTER   = 1,
+       LTTNG_KERNEL_CONTEXT_COMM           = 2,
+       LTTNG_KERNEL_CONTEXT_PRIO           = 3,
+       LTTNG_KERNEL_CONTEXT_NICE           = 4,
+       LTTNG_KERNEL_CONTEXT_VPID           = 5,
+       LTTNG_KERNEL_CONTEXT_TID            = 6,
+       LTTNG_KERNEL_CONTEXT_VTID           = 7,
+       LTTNG_KERNEL_CONTEXT_PPID           = 8,
+       LTTNG_KERNEL_CONTEXT_VPPID          = 9,
+};
+
+/* Perf counter attributes */
+struct lttng_kernel_perf_counter_ctx {
+       uint32_t type;
+       uint64_t config;
+       char name[LTTNG_SYMBOL_NAME_LEN];
+};
+
+/* Event/Channel context */
+struct lttng_kernel_context {
+       enum lttng_kernel_context_type ctx;
+       union {
+               struct lttng_kernel_perf_counter_ctx perf_counter;
+       } u;
+};
+
+struct lttng_kernel_kretprobe {
+       uint64_t addr;
+
+       uint64_t offset;
+       char symbol_name[LTTNG_SYM_NAME_LEN];
 };
 
 /*
@@ -56,18 +83,19 @@ struct lttng_kernel_kprobe {
        char symbol_name[LTTNG_SYM_NAME_LEN];
 };
 
-struct lttng_kernel_function_tracer {
+/* Function tracer */
+struct lttng_kernel_function {
        char symbol_name[LTTNG_SYM_NAME_LEN];
 };
 
 struct lttng_kernel_event {
-       char name[LTTNG_SYM_NAME_LEN];  /* event name */
+       char name[LTTNG_SYM_NAME_LEN];
        enum lttng_kernel_instrumentation instrumentation;
        /* Per instrumentation type configuration */
        union {
-               struct lttng_kernel_tracepoint tracepoint;
+               struct lttng_kernel_kretprobe kretprobe;
                struct lttng_kernel_kprobe kprobe;
-               struct lttng_kernel_function_tracer ftrace;
+               struct lttng_kernel_function ftrace;
        } u;
 };
 
@@ -77,4 +105,12 @@ struct lttng_kernel_tracer_version {
        uint32_t sublevel;
 };
 
+enum lttng_kernel_calibrate_type {
+       LTTNG_KERNEL_CALIBRATE_KRETPROBE,
+};
+
+struct lttng_kernel_calibrate {
+       enum lttng_kernel_calibrate_type type;  /* type (input) */
+};
+
 #endif /* _LTTNG_KERNEL_H */