SoW-2020-0002: Trace Hit Counters: trigger error reporting integration
[lttng-tools.git] / src / common / lttng-kernel.h
index a7c9258a73f057c32095d3e6e21849e1d1377f2b..cdf6f041bd4d563c52112019fbb4b767fe16d718 100644 (file)
@@ -1,20 +1,10 @@
 /*
- * Copyright (C) 2011 Julien Desfossez <julien.desfossez@polymtl.ca>
- *                      Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *                      David Goulet <david.goulet@polymtl.ca>
+ * Copyright (C) 2011 Julien Desfossez <julien.desfossez@polymtl.ca>
+ * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * Copyright (C) 2011 David Goulet <david.goulet@polymtl.ca>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License, version 2 only,
- * as published by the Free Software Foundation.
+ * SPDX-License-Identifier: GPL-2.0-only
  *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
 #ifndef _LTTNG_KERNEL_H
 
 #include <stdint.h>
 #include <common/macros.h>
+#include <lttng/constant.h>
+#include <lttng/event.h>
 
 #define LTTNG_KERNEL_SYM_NAME_LEN  256
+#define LTTNG_KERNEL_MAX_UPROBE_NUM  32
+#define LTTNG_KERNEL_SESSION_NAME_LEN  256
+#define LTTNG_KERNEL_SESSION_CREATION_TIME_ISO8601_LEN 26
 
 /*
  * LTTng DebugFS ABI structures.
@@ -39,6 +34,7 @@ enum lttng_kernel_instrumentation {
        LTTNG_KERNEL_KRETPROBE     = 3,
        LTTNG_KERNEL_NOOP          = 4,    /* not hooked */
        LTTNG_KERNEL_SYSCALL       = 5,
+       LTTNG_KERNEL_UPROBE        = 6,
 };
 
 enum lttng_kernel_context_type {
@@ -53,6 +49,33 @@ enum lttng_kernel_context_type {
        LTTNG_KERNEL_CONTEXT_PPID           = 8,
        LTTNG_KERNEL_CONTEXT_VPPID          = 9,
        LTTNG_KERNEL_CONTEXT_HOSTNAME       = 10,
+       LTTNG_KERNEL_CONTEXT_CPU_ID         = 11,
+       LTTNG_KERNEL_CONTEXT_INTERRUPTIBLE  = 12,
+       LTTNG_KERNEL_CONTEXT_PREEMPTIBLE    = 13,
+       LTTNG_KERNEL_CONTEXT_NEED_RESCHEDULE = 14,
+       LTTNG_KERNEL_CONTEXT_MIGRATABLE     = 15,
+       LTTNG_KERNEL_CONTEXT_CALLSTACK_KERNEL = 16,
+       LTTNG_KERNEL_CONTEXT_CALLSTACK_USER   = 17,
+       LTTNG_KERNEL_CONTEXT_CGROUP_NS      = 18,
+       LTTNG_KERNEL_CONTEXT_IPC_NS         = 19,
+       LTTNG_KERNEL_CONTEXT_MNT_NS         = 20,
+       LTTNG_KERNEL_CONTEXT_NET_NS         = 21,
+       LTTNG_KERNEL_CONTEXT_PID_NS         = 22,
+       LTTNG_KERNEL_CONTEXT_USER_NS        = 23,
+       LTTNG_KERNEL_CONTEXT_UTS_NS         = 24,
+       LTTNG_KERNEL_CONTEXT_UID            = 25,
+       LTTNG_KERNEL_CONTEXT_EUID           = 26,
+       LTTNG_KERNEL_CONTEXT_SUID           = 27,
+       LTTNG_KERNEL_CONTEXT_GID            = 28,
+       LTTNG_KERNEL_CONTEXT_EGID           = 29,
+       LTTNG_KERNEL_CONTEXT_SGID           = 30,
+       LTTNG_KERNEL_CONTEXT_VUID           = 31,
+       LTTNG_KERNEL_CONTEXT_VEUID          = 32,
+       LTTNG_KERNEL_CONTEXT_VSUID          = 33,
+       LTTNG_KERNEL_CONTEXT_VGID           = 34,
+       LTTNG_KERNEL_CONTEXT_VEGID          = 35,
+       LTTNG_KERNEL_CONTEXT_VSGID          = 36,
+       LTTNG_KERNEL_CONTEXT_TIME_NS        = 37,
 };
 
 /* Perf counter attributes */
@@ -92,15 +115,25 @@ struct lttng_kernel_kprobe {
        char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
 } LTTNG_PACKED;
 
+struct lttng_kernel_uprobe {
+       int fd;
+} LTTNG_PACKED;
+
+struct lttng_kernel_event_callsite_uprobe {
+       uint64_t offset;
+} LTTNG_PACKED;
+
+struct lttng_kernel_event_callsite {
+       union {
+               struct lttng_kernel_event_callsite_uprobe uprobe;
+       } u;
+} LTTNG_PACKED;
+
 /* Function tracer */
 struct lttng_kernel_function {
        char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
 } LTTNG_PACKED;
 
-struct lttng_kernel_syscall {
-       char disable;
-} __attribute__((packed));
-
 #define LTTNG_KERNEL_EVENT_PADDING1    16
 #define LTTNG_KERNEL_EVENT_PADDING2    LTTNG_KERNEL_SYM_NAME_LEN + 32
 struct lttng_kernel_event {
@@ -112,24 +145,92 @@ struct lttng_kernel_event {
        union {
                struct lttng_kernel_kretprobe kretprobe;
                struct lttng_kernel_kprobe kprobe;
+               struct lttng_kernel_uprobe uprobe;
                struct lttng_kernel_function ftrace;
-               struct lttng_kernel_syscall syscall;
                char padding[LTTNG_KERNEL_EVENT_PADDING2];
        } u;
 } LTTNG_PACKED;
 
+#define LTTNG_KERNEL_TRIGGER_PADDING1  16
+#define LTTNG_KERNEL_TRIGGER_PADDING2  LTTNG_KERNEL_SYM_NAME_LEN + 32
+struct lttng_kernel_trigger {
+       uint64_t id;
+       uint64_t error_counter_idx;
+       char name[LTTNG_KERNEL_SYM_NAME_LEN];   /* event name */
+       enum lttng_kernel_instrumentation instrumentation;
+       char padding[LTTNG_KERNEL_TRIGGER_PADDING1];
+
+       /* Per instrumentation type configuration */
+       union {
+               struct lttng_kernel_kretprobe kretprobe;
+               struct lttng_kernel_kprobe kprobe;
+               struct lttng_kernel_uprobe uprobe;
+               struct lttng_kernel_function ftrace;
+               char padding[LTTNG_KERNEL_TRIGGER_PADDING2];
+       } u;
+} LTTNG_PACKED;
+
+enum lttng_kernel_counter_arithmetic {
+       LTTNG_KERNEL_COUNTER_ARITHMETIC_MODULAR = 1,
+};
+
+enum lttng_kernel_counter_bitness {
+       LTTNG_KERNEL_COUNTER_BITNESS_32BITS = 1,
+       LTTNG_KERNEL_COUNTER_BITNESS_64BITS = 2,
+};
+
+struct lttng_kernel_counter_dimension {
+       uint64_t size;
+       uint64_t underflow_index;
+       uint64_t overflow_index;
+       uint8_t has_underflow;
+       uint8_t has_overflow;
+} LTTNG_PACKED;
+
+#define LTTNG_KERNEL_COUNTER_DIMENSION_MAX 8
+struct lttng_kernel_counter_conf {
+       uint32_t arithmetic;    /* enum lttng_kernel_counter_arithmetic */
+       uint32_t bitness;       /* enum lttng_kernel_counter_bitness */
+       uint32_t number_dimensions;
+       int64_t global_sum_step;
+       struct lttng_kernel_counter_dimension dimensions[LTTNG_KERNEL_COUNTER_DIMENSION_MAX];
+} LTTNG_PACKED;
+
+struct lttng_kernel_counter_value {
+       uint32_t number_dimensions;
+       uint64_t dimension_indexes[LTTNG_KERNEL_COUNTER_DIMENSION_MAX];
+       int64_t value;
+} LTTNG_PACKED;
+
+#define LTTNG_KERNEL_TRIGGER_NOTIFICATION_PADDING 32
+struct lttng_kernel_trigger_notification {
+       uint64_t id;
+       uint16_t capture_buf_size;
+       char padding[LTTNG_KERNEL_TRIGGER_NOTIFICATION_PADDING];
+} LTTNG_PACKED;
+
+#define LTTNG_KERNEL_CAPTURE_BYTECODE_MAX_LEN          65536
+struct lttng_kernel_capture_bytecode {
+       uint32_t len;
+       uint32_t reloc_offset;
+       uint64_t seqnum;
+       char data[0];
+} LTTNG_PACKED;
+
 struct lttng_kernel_tracer_version {
        uint32_t major;
        uint32_t minor;
        uint32_t patchlevel;
 } LTTNG_PACKED;
 
-enum lttng_kernel_calibrate_type {
-       LTTNG_KERNEL_CALIBRATE_KRETPROBE,
-};
+struct lttng_kernel_tracer_abi_version {
+       uint32_t major;
+       uint32_t minor;
+} LTTNG_PACKED;
 
-struct lttng_kernel_calibrate {
-       enum lttng_kernel_calibrate_type type;  /* type (input) */
+struct lttng_kernel_syscall_mask {
+       uint32_t len;   /* in bits */
+       char mask[];
 } LTTNG_PACKED;
 
 /*
@@ -147,4 +248,42 @@ struct lttng_kernel_channel {
        char padding[LTTNG_KERNEL_CHANNEL_PADDING1];
 } LTTNG_PACKED;
 
+#define KERNEL_FILTER_BYTECODE_MAX_LEN         65536
+struct lttng_kernel_filter_bytecode {
+       uint32_t len;
+       uint32_t reloc_offset;
+       uint64_t seqnum;
+       char data[0];
+} LTTNG_PACKED;
+
+/*
+ * kernel session name
+ */
+struct lttng_kernel_session_name {
+       char name[LTTNG_KERNEL_SESSION_NAME_LEN];
+} LTTNG_PACKED;
+
+/*
+ * kernel session creation datetime
+ */
+struct lttng_kernel_session_creation_time {
+       char iso8601[LTTNG_KERNEL_SESSION_CREATION_TIME_ISO8601_LEN];
+} LTTNG_PACKED;
+
+enum lttng_kernel_tracker_type {
+       LTTNG_KERNEL_TRACKER_UNKNOWN            = -1,
+
+       LTTNG_KERNEL_TRACKER_PID                = 0,
+       LTTNG_KERNEL_TRACKER_VPID               = 1,
+       LTTNG_KERNEL_TRACKER_UID                = 2,
+       LTTNG_KERNEL_TRACKER_VUID               = 3,
+       LTTNG_KERNEL_TRACKER_GID                = 4,
+       LTTNG_KERNEL_TRACKER_VGID               = 5,
+};
+
+struct lttng_kernel_tracker_args {
+       enum lttng_kernel_tracker_type type;
+       int32_t id;
+};
+
 #endif /* _LTTNG_KERNEL_H */
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