*
* 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
#ifndef _LTTNG_KERNEL_H
#define _LTTNG_KERNEL_H
-#include "lttng-share.h"
+#include <stdint.h>
-#define LTTNG_SYM_NAME_LEN 128
+#include <lttng-share.h>
-enum lttng_kernel_instrumentation {
- LTTNG_KERNEL_TRACEPOINTS,
- LTTNG_KERNEL_KPROBES,
- LTTNG_KERNEL_FUNCTION_TRACER,
-};
+#define LTTNG_SYM_NAME_LEN 128
/*
* 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,
+ LTTNG_KERNEL_NOOP = 4, /* not hooked */
+ LTTNG_KERNEL_SYSCALL = 5,
+};
+
+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_SYM_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_tracepoint {
+struct lttng_kernel_kretprobe {
+ uint64_t addr;
+
+ uint64_t offset;
+ char symbol_name[LTTNG_SYM_NAME_LEN];
};
/*
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;
};
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 */