#define *tracepoint*('prov_name', 't_name', ...)
#define *tracepoint_enabled*('prov_name', 't_name')
-Link with `-llttng-ust -ldl`, following this man page.
+Link with `-llttng-ust -llttng-ust-common -ldl`, following this man page.
DESCRIPTION
[role="term"]
----
-$ cc -o app tp.o app.o -llttng-ust -ldl
+$ cc -o app tp.o app.o -llttng-ust -llttng-ust-common -ldl
----
[role="term"]
----
-$ cc -shared -Wl,--no-as-needed -o tp.so tp.o -llttng-ust
+$ cc -shared -Wl,--no-as-needed -o tp.so tp.o -llttng-ust -llttng-ust-common
----
This tracepoint provider shared object isn't linked with the user
The following context fields are supported by LTTng-UST:
-`cpu_id`::
+General context fields::
++
+`cpu_id`:::
CPU ID.
+
NOTE: This context field is always enabled, and it cannot be added
dynamic event filtering. See man:lttng-enable-event(1) for more
information about event filtering.
-`ip`::
+`ip`:::
Instruction pointer: enables recording the exact address from which
an event was emitted. This context field can be used to
reverse-lookup the source location that caused the event
to be emitted.
-`perf:thread:COUNTER`::
- perf counter named 'COUNTER'. Use `lttng add-context --list` to
- list the available perf counters.
+`pthread_id`:::
+ POSIX thread identifier.
+
-Only available on IA-32 and x86-64 architectures.
-
-`perf:thread:raw:rN:NAME`::
- perf counter with raw ID 'N' and custom name 'NAME'. See
- man:lttng-add-context(1) for more details.
-
-`pthread_id`::
- POSIX thread identifier. Can be used on architectures where
- `pthread_t` maps nicely to an `unsigned long` type.
+Can be used on architectures where `pthread_t` maps nicely to an
+`unsigned long` type.
-`procname`::
+Process context fields::
++
+`procname`:::
Thread name, as set by man:exec(3) or man:prctl(2). It is
recommended that programs set their thread name with man:prctl(2)
before hitting the first tracepoint for that thread.
-`vpid`::
- Virtual process ID: process ID as seen from the point of view of
- the current man:pid_namespaces(7).
+`vpid`:::
+ Virtual process ID: process ID as seen from the point of view of the
+ current process ID namespace (see man:pid_namespaces(7)).
-`vtid`::
- Virtual thread ID: thread ID as seen from the point of view of
- the current man:pid_namespaces(7).
+`vtid`:::
+ Virtual thread ID: thread ID as seen from the point of view of the
+ current process ID namespace (see man:pid_namespaces(7)).
-The following man:namespaces(7) context fields are supported by LTTng-UST:
+perf context fields::
++
+`perf:thread:COUNTER`:::
+ perf counter named 'COUNTER'. Use `lttng add-context --list` to
+ list the available perf counters.
++
+Only available on IA-32 and x86-64 architectures.
-`cgroup_ns`::
- Cgroup root directory namespace: inode number of the current
- man:cgroup_namespaces(7) in the proc filesystem.
+`perf:thread:raw:rN:NAME`:::
+ perf counter with raw ID 'N' and custom name 'NAME'. See
+ man:lttng-add-context(1) for more details.
+
+Namespace context fields (see man:namespaces(7))::
++
+`cgroup_ns`:::
+ Inode number of the current control group namespace (see
+ man:cgroup_namespaces(7)) in the proc file system.
-`ipc_ns`::
- System V IPC, POSIX message queues namespace: inode number of the
- current man:ipc_namespaces(7) namespace in the proc filesystem.
+`ipc_ns`:::
+ Inode number of the current IPC namespace (see
+ man:ipc_namespaces(7)) in the proc file system.
-`mnt_ns`::
- Mount points namespace: inode number of the current
- man:mount_namespaces(7) in the proc filesystem.
+`mnt_ns`:::
+ Inode number of the current mount point namespace (see
+ man:mount_namespaces(7)) in the proc file system.
-`net_ns`::
- Network devices, stacks, ports namespace: inode number of the
- current man:network_namespaces(7) in the proc filesystem.
+`net_ns`:::
+ Inode number of the current network namespace (see
+ man:network_namespaces(7)) in the proc file system.
-`pid_ns`::
- Process IDs namespace: inode number of the current
- man:pid_namespaces(7) in the proc filesystem.
+`pid_ns`:::
+ Inode number of the current process ID namespace (see
+ man:pid_namespaces(7)) in the proc file system.
-`user_ns`::
- User and group IDs namespace: inode number of the current
- man:user_namespaces(7) in the proc filesystem.
+`time_ns`:::
+ Inode number of the current clock namespace (see
+ man:time_namespaces(7)) in the proc file system.
-`uts_ns`::
- Hostname and NIS domain name namespace: inode number of the
- current man:uts_namespaces(7) in the proc filesystem.
+`user_ns`:::
+ Inode number of the current user namespace (see
+ man:user_namespaces(7)) in the proc file system.
-The following man:credentials(7) context fields are supported by LTTng-UST:
+`uts_ns`:::
+ Inode number of the current UTS namespace (see
+ man:uts_namespaces(7)) in the proc file system.
-`vuid`::
+Credential context fields (see man:credentials(7))::
++
+`vuid`:::
Virtual real user ID: real user ID as seen from the point of view of
- the current man:user_namespaces(7).
+ the current user namespace (see man:user_namespaces(7)).
-`vgid`::
- Virtual real group ID: real group ID as seen from the point of view of
- the current man:user_namespaces(7).
+`vgid`:::
+ Virtual real group ID: real group ID as seen from the point of view
+ of the current user namespace (see man:user_namespaces(7)).
-`veuid`::
- Virtual effective user ID: effective user ID as seen from the point of
- view of the current man:user_namespaces(7).
+`veuid`:::
+ Virtual effective user ID: effective user ID as seen from the point
+ of view of the current user namespace (see man:user_namespaces(7)).
-`vegid`::
- Virtual effective group ID: effective group ID as seen from the point of
- view of the current man:user_namespaces(7).
+`vegid`:::
+ Virtual effective group ID: effective group ID as seen from the
+ point of view of the current user namespace (see
+ man:user_namespaces(7)).
-`vsuid`::
- Virtual saved set-user ID: saved set-user ID as seen from the point of
- view of the current man:user_namespaces(7).
+`vsuid`:::
+ Virtual saved set-user ID: saved set-user ID as seen from the point
+ of view of the current user namespace (see man:user_namespaces(7)).
-`vsgid`::
- Virtual saved set-group ID: saved set-group ID as seen from the point of
- view of the current man:user_namespaces(7).
+`vsgid`:::
+ Virtual saved set-group ID: saved set-group ID as seen from the
+ point of view of the current user namespace (see
+ man:user_namespaces(7)).
[[state-dump]]
----
$ cc -c -I. tp.c
$ cc -c app.c
-$ cc -o app tp.o app.o -llttng-ust -ldl
+$ cc -o app tp.o app.o -llttng-ust -llttng-ust-common -ldl
----
Using the man:lttng(1) tool, create an LTTng tracing session, enable
Setting this environment variable to `0` is recommended for applications
with time constraints on the process startup time.
+
-Default: {lttng_ust_register_timeout}.
+Default: 3000.
`LTTNG_UST_WITHOUT_BADDR_STATEDUMP`::
If set, prevents `liblttng-ust` from performing a base address state
projects / lttng-ust.git / blobdiff