Jérémie Galarneau [Wed, 9 Jun 2021 21:58:45 +0000 (17:58 -0400)] 
Add condition-targeting error query
Notifications discarded by the tracers are reported at the level of a
trigger. As those errors are specific to triggers with an "event-rule
matches" condition, they should be reported through a condition-specific
error query.
Note that a condition error query is created from a trigger: there is no
ambiguity since, unlike actions, conditions cannot be nested.
Given the proximity of the final 2.13 release, the code which populated
trigger error query results is simply used to populate the condition
error query results when the condition is of type "event-rule matches".
No trigger-scope errors can be reported for the moment. However, such
error reports will be added in the future.
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: Ie1ac3668142041beb6fd61574ccef506707c55b2
Francis Deslauriers [Tue, 8 Jun 2021 21:21:30 +0000 (17:21 -0400)] 
action list: missing renames from previous name "group"
Signed-off-by: Francis Deslauriers <francis.deslauriers@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I4373984c2bea96dc67880b1bbb361fb8fbc014ca
Francis Deslauriers [Tue, 8 Jun 2021 20:14:49 +0000 (16:14 -0400)]
Cleanup: ust-app: simplify ust_app_synchronize() error paths
Signed-off-by: Francis Deslauriers <francis.deslauriers@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I7fd3636dfb1370ebe224aa2e200189b2fe99002a
Francis Deslauriers [Tue, 8 Jun 2021 19:15:00 +0000 (15:15 -0400)]
Fix: double mutex_unlock() if session is deleted
Signed-off-by: Francis Deslauriers <francis.deslauriers@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I9e640396c12496b6d6c191e838dab138679d5f5e
Francis Deslauriers [Fri, 28 May 2021 16:40:07 +0000 (12:40 -0400)]
Fix: out of sync lttng_ust_ctl_sigbug_handle() prototype
Signed-off-by: Francis Deslauriers <francis.deslauriers@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I3aa3fc711750be320433a2f4d1e7d49d47d71c44
Francis Deslauriers [Fri, 28 May 2021 20:06:09 +0000 (16:06 -0400)]
Fix: appending unallocated data from beyond exclusion entries
Issue
=====
If an exclusion string is smaller than the `LTTNG_SYMBOL_NAME_LEN`
integer, the `lttng_dynamic_buffer_append()` call will append
unallocated data to the buffer.
Fix
===
Use the `exclusion_len` value to copy the actual exclusion and pad the
remaining bytes with zeros.
Signed-off-by: Francis Deslauriers <francis.deslauriers@efficios.com>
Signed-off-by: Simon Marchi <simon.marchi@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I04c6681c28e82de29791541eb490158db9e503d0
Francis Deslauriers [Wed, 2 Jun 2021 19:28:24 +0000 (15:28 -0400)]
Tests: remove leftover temporary files
Signed-off-by: Francis Deslauriers <francis.deslauriers@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: Ie9249820643158c1572c9ce45507d1cba36bf6f7
Philippe Proulx [Thu, 10 Jun 2021 21:45:29 +0000 (17:45 -0400)] 
lttng-disable-channel(1): fix typo
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I37f733bd48d17f2e6de75038918cabd95375e4e2
Philippe Proulx [Thu, 10 Jun 2021 14:24:08 +0000 (10:24 -0400)]
lttng-concepts(7): remove reference to the section it's in
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I09319ec4849e854d6a4881ab7895cffc551be58a
Philippe Proulx [Thu, 10 Jun 2021 14:23:48 +0000 (10:23 -0400)]
lttng-concepts(7): fix typo
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: Ief92d1f4a56f5263a2fed5c70e2b26d660d6d81d
Michael Jeanson [Tue, 8 Jun 2021 14:55:19 +0000 (10:55 -0400)] 
Build fix: build without lttng-ust
Add conditionnal inclusion of ust-sigbus to the tests modified by:
commit
e207fe73b58787c6077ec5d49254e12ff1a82b51
Author: orbea <orbea@riseup.net>
Date: Sat May 29 11:07:41 2021 -0700
build: Add missing DEFINE_LTTNG_UST_SIGBUS_STATE();
Fixes:
liblttng-ust-ctl.so: undefined reference to `lttng_ust_sigbus_state'
Change-Id: If4af7ada6d94ee67603156d151575dcc57baad05
Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
orbea [Sat, 29 May 2021 18:07:41 +0000 (11:07 -0700)] 
build: Add missing DEFINE_LTTNG_UST_SIGBUS_STATE();
Fixes:
liblttng-ust-ctl.so: undefined reference to `lttng_ust_sigbus_state'
Signed-off-by: orbea <orbea@riseup.net>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I428bdc262168d1701525e024e7580861d2498e2b
orbea [Thu, 13 May 2021 18:10:56 +0000 (11:10 -0700)]
build: Pass --no-as-needed directly to the linker
This is not a libtool argument, but rather a linker argument.
GNU libtool will silently ignore arguments it doesn't understand
in many cases while slibtool does not.
Signed-off-by: orbea <orbea@riseup.net>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I55e55f1bb6a5d14d1c81505ceb39beaef84af9e9
orbea [Thu, 13 May 2021 18:07:58 +0000 (11:07 -0700)]
build: Use liblttng-sessiond-common.la instead of LIVE
This allow correctly linking live_test with slibtool.
Signed-off-by: orbea <orbea@riseup.net>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: Ie429aa36b817a3d5b22bb4bbe3d21a82c65ffdaa
orbea [Thu, 13 May 2021 17:47:06 +0000 (10:47 -0700)]
build: Use liblttng-sessiond-common.la instead of SESSIOND_OBJS
This allows correctly linking test_session and test_ust_data
with slibtool.
Signed-off-by: orbea <orbea@riseup.net>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I5c18187e4185218db337ac3548f0d44fb60501f3
orbea [Thu, 13 May 2021 17:16:58 +0000 (10:16 -0700)]
build: Add the liblttng-sessiond-comm.la convenience library
This allows correctly linking test_kernel_data with slibtool.
Signed-off-by: orbea <orbea@riseup.net>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: Ib076854dc2a4f0234ad3fb04ea1c3c7c4d4a2b7e
Philippe Proulx [Tue, 18 May 2021 14:18:41 +0000 (10:18 -0400)]
lttng-concepts(7): add missing "commands" word
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: Ib555c944c37b983a40f963ea3597bafeba6c4da2
Francis Deslauriers [Thu, 27 May 2021 16:53:12 +0000 (12:53 -0400)]
Tests: crash: remove redundant directory test
The presence of the `$shm_session_path/ust/pid` path is already tested
a few line above. No need to test it again.
Signed-off-by: Francis Deslauriers <francis.deslauriers@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: If7da3974a6e03817533f650790e0431346401db5
Jérémie Galarneau [Wed, 2 Jun 2021 15:52:59 +0000 (11:52 -0400)]
Fix: bump minimal urcu dependency to 0.11
cds_lfht_destroy is used from within RCU read-side critical sections
which is only allowed for urcu >= 0.10 (see userspace-rcu commit
d0ec0ed2f).
Such uses were introduced as part of the 2.11 release (contemporary to
urcu 0.10).
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I0b513f58eacd9fc345eacfddcc2662ffa367695a
Jonathan Rajotte [Thu, 4 Feb 2021 20:46:27 +0000 (15:46 -0500)] 
condition: buffer usage: validation does not check for ratio and bytes threshold
Buffer usage condition do not support having both ratio and bytes
threshold set.
Using `!usage->threshold_ratio.set && !usage->threshold_bytes.set` does
not error out for `threshold_ratio.set == 1` and
`usage->threshold_bytes.set == 1`
0 0 : 1
0 1 : 0
1 0 : 0
1 1 : 0
We want to check for a xnor (`usage->threshold_ratio.set == usage->threshold_bytes.set`)
0 0 : 1
0 1 : 0
1 0 : 0
1 1 : 1
We could also do 2 error check one for not set and one validating that
both are not set.
Signed-off-by: Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I5bfcf43bcaf9687ddf9fdebe5ace4f15bda28261
Jonathan Rajotte [Tue, 18 May 2021 18:57:05 +0000 (14:57 -0400)]
Remove LTTNG_EVENT_RULE_TYPE_KERNEL_FUNCTION
It is not supported for 2.13.
Change-Id: If42b18115cc61da9ee17f281390280b21fdc35a6
Signed-off-by: Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Jonathan Rajotte [Wed, 12 May 2021 07:20:51 +0000 (03:20 -0400)]
Remove lttng_event_rule_tracepoint
lttng_event_rule_tracepoint is "exploded" in:
lttng_event_rule_user_tracepoint
lttng_event_rule_kernel_tracepoint
lttng_event_rule_jul_logging
lttng_event_rule_python_logging
lttng_event_rule_log4j_logging
On the CLI front, the `--domain` option for the add-trigger is removed
since for each event rule type the domain is implicit based on the type.
`--type` accepts the following:
kernel
kernel:tracepoint
kernel:kprobe
kernel:uprobe
syscall
syscall:entry
syscall:exit
syscall:entry+exit
syscall:*
kernel:syscall
kernel:syscall:entry
kernel:syscall:exit
kernel:syscall:entry+exit
kernel:syscall:*
user
user:tracepoint
python
python:logging
jul
jul:logging
log4j
log4j:logging
kprobe
function
Signed-off-by: Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I4a0489f8f2a79a2c967f5d69461bed10f40b8278
Jonathan Rajotte [Wed, 12 May 2021 05:35:53 +0000 (01:35 -0400)]
Test log level for newly introduced event rule type (*_logging, user_tracepoint)
This is in prevision to lttng_event_rule_tracepoint removal.
Signed-off-by: Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: Iff251d7540a16a2a9561d834fc464ac1a6be4f84
Jonathan Rajotte [Wed, 12 May 2021 05:10:41 +0000 (01:10 -0400)]
Introduce lttng_event_rule_python_logging
A following patch will remove lttng_event_rule_tracepoint.
Signed-off-by: Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I222bd4f2616efd1b0c0e36cfe5a89cf5416b6a88
Jonathan Rajotte [Wed, 12 May 2021 05:01:19 +0000 (01:01 -0400)]
Introduce lttng_event_rule_log4j_logging
A following patch will remove lttng_event_rule_tracepoint.
Signed-off-by: Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: Ie94c172ed9550dd7c3ae9967e353a3d6ac5b5907
Jonathan Rajotte [Wed, 12 May 2021 03:38:17 +0000 (23:38 -0400)]
Introduce lttng_event_rule_jul_logging
A following patch will remove lttng_event_rule_tracepoint.
Signed-off-by: Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I95f40920b73b5deb42c2e92ad50c43dba0b0e436
Jonathan Rajotte [Wed, 12 May 2021 00:16:51 +0000 (20:16 -0400)]
Introduce lttng_event_rule_user_tracepoint
A following patch will remove lttng_event_rule_tracepoint.
Signed-off-by: Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: If814c3ba828e4869cde9af4b9d76c8b830f30654
Jonathan Rajotte [Tue, 11 May 2021 23:52:37 +0000 (19:52 -0400)]
Introduce lttng_event_rule_kernel_tracepoint
A following patch will remove lttng_event_rule_tracepoint.
Signed-off-by: Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I614e45be3ef5e41fa081ad24dc1a9dcddb7eb2af
Jonathan Rajotte [Tue, 18 May 2021 18:48:37 +0000 (14:48 -0400)]
Rename lttng_event_rule_kernel_probe to lttng_event_rule_kernel_kprobe
The add trigger command now accepts `kernel:kprobe` instead of `kernel-
probe`. `kprobe` is still accepted.
Signed-off-by: Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: Ifd6753f337e93ea8eb393b8d686596112292c5bb
Jonathan Rajotte [Tue, 18 May 2021 17:44:38 +0000 (13:44 -0400)]
Rename lttng_event_rule_userspace_probe to lttng_event_rule_kernel_uprobe
The `--type` option for add trigger now only support `kernel:uprobe`.
Signed-off-by: Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I2c4de8e314d6fba735343d21c04fff366b92cca9
Jonathan Rajotte [Tue, 18 May 2021 16:08:15 +0000 (12:08 -0400)]
Rename lttng_event_rule_syscall to lttng_event_rule_kernel_syscall
Allow the usage of "kernel:syscall*" as the `--type` argument for add
trigger. A later patch remove the notion of domain.
Signed-off-by: Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: Ib5c87ec937bb0acf9c5133532961dcc31e533884
Jonathan Rajotte [Tue, 11 May 2021 23:19:03 +0000 (19:19 -0400)]
Rename *emission_site_type to *emission_site
Signed-off-by: Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I3027affe23de8674a5a813d18643396e3a1474f1
Jonathan Rajotte [Tue, 11 May 2021 23:02:45 +0000 (19:02 -0400)]
Rename lttng_event_rule_syscall_(set, get)_pattern to lttng_event_rule_syscall_(set, get)_name_pattern
Signed-off-by: Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: Ia6d8c55f607cd5af4201a61abaab277994618bb6
Jonathan Rajotte [Tue, 11 May 2021 22:58:05 +0000 (18:58 -0400)]
Rename *exclusion* to *name_pattern_exclusion*
Signed-off-by: Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: Ic72582dccdc2810dfc07fc66abf776c853d217b6
Jonathan Rajotte [Tue, 11 May 2021 22:47:31 +0000 (18:47 -0400)]
Rename lttng_event_rule_tracepoint_(set,get)_pattern to lttng_event_rule_tracepoint_(set, get)_name_pattern
Signed-off-by: Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: Ib018d7ab4fab66842302beef19c0971d704d2d02
Jérémie Galarneau [Fri, 28 May 2021 15:36:34 +0000 (11:36 -0400)]
Build fix: cygwin: unknown type ssize_t
The build fails on cygwin with the following error:
In file included from actions/path.c:8:
../../include/lttng/action/path-internal.h:31:1: error: unknown type name "ssize_t"; did you mean "_ssize_t"?
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I93aac8ef33cfe19b655d80709c9b95a503815bda
Mathieu Desnoyers [Thu, 27 May 2021 20:45:55 +0000 (16:45 -0400)] 
Fix: consumer: unbalanced RCU read-side lock on error
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I22ddc8585af84d07e8f3d19e9df582599352a1b8
Philippe Proulx [Tue, 25 May 2021 18:56:54 +0000 (14:56 -0400)]
lttng-enable-event(1): add usage examples
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I6310d753a2fd6db74f4a854a87cda690d3479593
Philippe Proulx [Tue, 25 May 2021 18:56:15 +0000 (14:56 -0400)]
lttng-{enable,disable}-event(1): document default channel limitation
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I0b531be8bde9dfd74bb4a28fe70eeef5eeee7f72
Philippe Proulx [Tue, 18 May 2021 16:36:29 +0000 (12:36 -0400)]
doc/man: log level prefixes are not required
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: Iddd9eaff96ca857b1249421c31b64bec859429c6
Francis Deslauriers [Tue, 25 May 2021 21:45:57 +0000 (17:45 -0400)]
Fix: sessiond: use of uninitialized memory in buffer-usage condition
Issue
=====
valgrind reports the following:
==436327== Thread 9 Client manageme:
==436327== Syscall param sendmsg(msg.msg_iov[0]) points to uninitialised byte(s)
==436327== at 0x51E418D: __libc_sendmsg (sendmsg.c:28)
==436327== by 0x51E418D: sendmsg (sendmsg.c:25)
==436327== by 0x20D436: lttcomm_send_unix_sock (unix.c:294)
==436327== by 0x186F08: send_unix_sock (client.c:895)
==436327== by 0x18BAFA: thread_manage_clients (client.c:2800)
==436327== by 0x18147D: launch_thread (thread.c:66)
==436327== by 0x51D8608: start_thread (pthread_create.c:477)
==436327== by 0x5314292: clone (clone.S:95)
==436327== Address 0x7540ec1 is 97 bytes inside a block of size 256 alloc'd
==436327== at 0x483DFAF: realloc (in /usr/lib/x86_64-linux-gnu/valgrind/vgpreload_memcheck-amd64-linux.so)
==436327== by 0x1E7556: lttng_dynamic_buffer_set_capacity (dynamic-buffer.c:166)
==436327== by 0x1E72FC: lttng_dynamic_buffer_append (dynamic-buffer.c:55)
==436327== by 0x1DE604: lttng_condition_buffer_usage_serialize (buffer-usage.c:123)
==436327== by 0x1DFF47: lttng_condition_serialize (condition.c:98)
==436327== by 0x20ACD0: lttng_trigger_serialize (trigger.c:328)
==436327== by 0x189EBE: process_client_msg (client.c:2258)
==436327== by 0x18B761: thread_manage_clients (client.c:2742)
==436327== by 0x18147D: launch_thread (thread.c:66)
==436327== by 0x51D8608: start_thread (pthread_create.c:477)
==436327== by 0x5314292: clone (clone.S:95)
This can be reproduce by running the sessiond under valgrind and
launching the following binary to register buffer-usage conditions:
./tests/regression/tools/trigger/utils/register-some-triggers test_buffer_usage_conditions
The valgrind report is pointing us toward the `struct
lttng_condition_buffer_usage_comm` stack allocation in the
`lttng_condition_buffer_usage_serialize()` function.
The actual issue is that the threshold_bytes/threshold_ratio will not be
initialized in that structure depending on the way the threshold is
expressed.
Fix
===
Make sure the struct is zeroed at the declaration site.
Signed-off-by: Francis Deslauriers <francis.deslauriers@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I2046f4e0e1d857cfd1a53e0c13aea55f17adada3
Jérémie Galarneau [Tue, 25 May 2021 23:17:07 +0000 (19:17 -0400)]
lttng-ctl: use lttng_action_path to specify error query actions
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I30a93465231ec963d087b25678b6703a0425ceef
Jérémie Galarneau [Thu, 20 May 2021 22:50:06 +0000 (18:50 -0400)]
error-query: add lttng_action_path to express the location of an action
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: Icc3056029219cc8f0794b06e7021885e193724be
Michael Jeanson [Tue, 11 May 2021 14:29:50 +0000 (10:29 -0400)]
tests: Move tap-driver.sh out of the autotools aux directory
We have made local modifications to this script, move it to the test
suite directory so it doesn't get overwritten by an updated version from
autotools.
Running 'make check' on current RHEL or Fedora without this patch
results in the following error:
make[5]: Entering directory '/builddir/build/BUILD/lttng-tools-2.12.4/tests/regression'
tap-driver.sh: invalid option: '--post-script'
Change-Id: I22823176cc5b98901865c9415250ce8e49384cbd
Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Philippe Proulx [Mon, 17 May 2021 21:39:12 +0000 (17:39 -0400)]
lttng-enable-channel(1): add usage examples
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I26bcfed2b6d71b0bbc2fa89d33f37925c303c91c
Philippe Proulx [Mon, 17 May 2021 20:23:59 +0000 (16:23 -0400)]
lttng-view(1): add usage examples
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I9324b0733ebbaabb824efca4a11330fe3a5c1d0f
Philippe Proulx [Mon, 17 May 2021 20:20:08 +0000 (16:20 -0400)]
lttng-untrack(1): add usage examples
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: Ibafe1662e37110962ae3c7fdef9d450b75f2c0a5
Philippe Proulx [Mon, 17 May 2021 20:19:49 +0000 (16:19 -0400)]
lttng-untrack(1): follow the style of lttng-track(1) for the example
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I0c714eb2e504d118cfb3b48bf8e70f33d36d2352
Philippe Proulx [Mon, 17 May 2021 20:19:09 +0000 (16:19 -0400)]
lttng-track(1): add usage examples
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I21a7906626a09b9964fc51dd083f1c2ea5b855c3
Philippe Proulx [Mon, 17 May 2021 20:05:40 +0000 (16:05 -0400)]
lttng-stop(1): add usage examples
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I6794937457d4f34d649b9edb6a755e091a6af67e
Philippe Proulx [Mon, 17 May 2021 20:05:30 +0000 (16:05 -0400)]
lttng-start(1): add usage examples
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I893a9e26ac69269150cf0a68ec6968cb5fa9bdbf
Philippe Proulx [Mon, 17 May 2021 20:01:05 +0000 (16:01 -0400)]
lttng-snapshot(1): add usage examples
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I686f3c8a0e82952a5b673780eef830dea888044d
Philippe Proulx [Mon, 17 May 2021 19:49:59 +0000 (15:49 -0400)]
lttng-save(1): add usage examples
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I73d4cd169c37d0dbb99ad965d04acc9eaf8a1856
Philippe Proulx [Mon, 17 May 2021 19:46:22 +0000 (15:46 -0400)]
lttng-rotate(1): add usage examples
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I2ee1a32fd44b6abf6a8d58749f1a42731b30ba56
Philippe Proulx [Mon, 17 May 2021 19:44:06 +0000 (15:44 -0400)]
lttng-remove-trigger(1): add usage examples
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: Ic34f148f061999b90ad47df8efc5c1db2d07f762
Philippe Proulx [Mon, 17 May 2021 19:35:42 +0000 (15:35 -0400)]
lttng-regenerate(1): add usage examples
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I91074dfc717d481fe16ec4f40533757a0b3f3da4
Philippe Proulx [Mon, 17 May 2021 18:29:07 +0000 (14:29 -0400)]
lttng-load(1): add usage examples
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I1a4902b1325630c79b8ec121e95874bca1ca8bd6
Philippe Proulx [Mon, 17 May 2021 18:21:06 +0000 (14:21 -0400)]
lttng-list(1): add usage examples
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: Id52a51f4daeef2266885d25240699ee921bb041b
Philippe Proulx [Mon, 17 May 2021 18:12:16 +0000 (14:12 -0400)]
lttng-enable-rotation(1): add usage examples
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I56eafd9e52cd37f48849ddfb82d007c9fb3f3767
Philippe Proulx [Mon, 17 May 2021 18:09:54 +0000 (14:09 -0400)]
lttng-disable-rotation(1): add usage examples
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I24f132858c12fa4e99b8a24baee9e8becf0d73f8
Philippe Proulx [Mon, 17 May 2021 18:05:02 +0000 (14:05 -0400)]
lttng-disable-event(1): add usage examples
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I111fbfca2a12517ea6b2f315f4adf0c1b60c37de
Philippe Proulx [Mon, 17 May 2021 18:04:53 +0000 (14:04 -0400)]
lttng-disable-channel(1): add usage examples
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: Ia524f1e3f032633670312000f4fc5674c09da498
Philippe Proulx [Mon, 17 May 2021 18:04:43 +0000 (14:04 -0400)]
lttng-destroy(1): add usage examples
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: If16dcd4197c6af734b1147c9463ae2255b0a1c1f
Philippe Proulx [Mon, 17 May 2021 18:04:31 +0000 (14:04 -0400)]
lttng-create(1): add usage examples
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I2371a84eac9310b6725462ea4278d01497c3e7f4
Philippe Proulx [Mon, 17 May 2021 18:04:21 +0000 (14:04 -0400)]
lttng-clear(1): add usage examples
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: Id410c79fddb88de87edda333bec9ef59b6f5afc9
Philippe Proulx [Mon, 17 May 2021 18:02:45 +0000 (14:02 -0400)]
lttng-add-trigger(1): DESCRIPTION: move up the link to "EXAMPLES"
In lttng(1) manual pages, put
See the <<examples,EXAMPLES>> section below for usage examples.
above references to other manual pages at the bottom of the
"DESCRIPTION" section.
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I498a49536d6a876af9a0ed009378d257e483c975
Philippe Proulx [Mon, 17 May 2021 18:02:15 +0000 (14:02 -0400)]
lttng-add-context(1): EXAMPLES: add internal links to relevant options
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I242445993ae85c66074b90078dcd1f8e18cb86db
Philippe Proulx [Mon, 17 May 2021 17:57:48 +0000 (13:57 -0400)]
lttng-disable-event(1): `--tracepoint` option is not the default
I previously thought that not specifying any instrumentation point type
option was equivalent to specifying `--tracepoint`, like with the
`enable-event` command.
It's not the case: `--tracepoint` is just a filter, like `--syscall` and
the others. With `--kernel`, if you don't specify any instrumentation
point type condition option, the `disable-event` command disables
recording event rules regardless of their instrumentation point type.
This patch updates lttng-disable-event(1) to explain this.
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I489c5d16dae954f4b5116edce556fdd942c98c4d
Francis Deslauriers [Fri, 14 May 2021 20:04:28 +0000 (16:04 -0400)]
Cleanup: tests: name all temporary files to better identify leakage
When using a template, we need to add `--tmpdir` to the `mktemp`
arguments to place the tmp files in `/tmp` or `$TMPDIR`.
Signed-off-by: Francis Deslauriers <francis.deslauriers@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: Id107530578d91700b726ceec016a8cef772e94b0
Francis Deslauriers [Mon, 17 May 2021 19:01:33 +0000 (15:01 -0400)]
Cleanup: tests: use find's `-name` option instead of grep
This prevents grep of finding matches in the leading directories listed
by find.
It caused problem when I used the "metadata" string in one of the
directory names:
/tmp/tmp.test_regen_metadata_ust_trace_path.6FbwPF/
Signed-off-by: Francis Deslauriers <francis.deslauriers@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I7165a3b4e4a16c793fe51c40484978be3a99dbfc
Jérémie Galarneau [Sat, 15 May 2021 03:32:57 +0000 (23:32 -0400)]
Update version to v2.13.0-rc2
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Mathieu Desnoyers [Sat, 15 May 2021 00:57:33 +0000 (20:57 -0400)]
Fix: expected procname should not have -ust suffix
commit ("Fix: ustcomm: application name uses the '-ust'-suffixed thread
name") in LTTng-UST removes "-ust" suffix from procname, which appears
in the output trace directory hierarchy.
Adapt tests to not expect this quirk.
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I96c3944124bbe154875085a37a51ba2bd458f83b
Francis Deslauriers [Fri, 14 May 2021 19:45:15 +0000 (15:45 -0400)]
Fix: Tests: leftover temporary files after tests
Signed-off-by: Francis Deslauriers <francis.deslauriers@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: Ie0c66d45a00e890c1f1e8dc8db7b1baa2cca50f1
Francis Deslauriers [Wed, 12 May 2021 15:28:26 +0000 (11:28 -0400)]
Fix: trigger: abort() when adding `--notify` action with python event rule matches
Issue
=====
Adding the following trigger makes the sessiond abort:
lttng add-trigger --condition=event-rule-matches --domain=python --action=notify
With the following stacktrace:
(gdb) bt
#0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#1 0x00007ffff7a71859 in __GI_abort () at abort.c:79
#2 0x00000000004a1eeb in event_notifier_error_accounting_register_event_notifier (trigger=0x7fffe0000f50, error_counter_index=0x7fffefffde38) at event-notifier-error-accounting.c:1075
#3 0x00000000004743e6 in setup_tracer_notifier (state=0x7fffefffe3e8, trigger=0x7fffe0000f50) at notification-thread-events.c:2606
#4 0x000000000046dacb in handle_notification_thread_command_register_trigger (state=0x7fffefffe3e8, trigger=0x7fffe0000f50, is_trigger_anonymous=false, cmd_result=0x7fffedfdd6e8) at notification-thread-events.c:2751
#5 0x000000000046d083 in handle_notification_thread_command (handle=0x601460, state=0x7fffefffe3e8) at notification-thread-events.c:3112
#6 0x00000000004687bd in thread_notification (data=0x601460) at notification-thread.c:710
#7 0x0000000000486703 in launch_thread (data=0x601550) at thread.c:66
#8 0x00007ffff7c47609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9 0x00007ffff7b6e293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
This happens because the LTTNG_DOMAIN_PYTHON domain is not handled by
the switch-case.
Fix
===
Add LTTNG_DOMAIN_PYTHON (all other agent domains) as a fallthrough
LTTNG_DOMAIN_UST.
Note
====
Add a basic test case for python agent.
Signed-off-by: Francis Deslauriers <francis.deslauriers@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I9971cdad8bbc6adca8f6ba49964483c42a25be7d
Francis Deslauriers [Wed, 12 May 2021 15:09:37 +0000 (11:09 -0400)]
Tests: move `list_triggers_matches_ok` to utils.sh
Signed-off-by: Francis Deslauriers <francis.deslauriers@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I4cd3816fa7cbc1032582b2a99f67a3b14222f972
Francis Deslauriers [Thu, 13 May 2021 01:21:28 +0000 (21:21 -0400)]
Tests: Move python test app to `tests/utils/testapp` directory
Signed-off-by: Francis Deslauriers <francis.deslauriers@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I9bc55c0fc0b8de42157d64884c7e1ee08b800525
Mathieu Desnoyers [Wed, 12 May 2021 20:05:29 +0000 (16:05 -0400)]
Fix: validate whether event notifiers are supported by UST application
Considering that lttng-sessiond interacts with older (2.12) applications
as well as 2.13+, it needs not to send event notifiers related commands
to an older UST, because the unknown command will cause the protocol to
become out of sync on the communication socket, because the older
lttng-ust does not know how many bytes must be read when receiving the
unknown command. So even though it can return that the command is
unknown, the communication socket becomes out of sync.
Depends-on: lttng-ust: If048c739dd37147ffb2a54715c2101177d2df4f7
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: If9cbc7a7cd6cb957134bf3a2e284ab99ef20e93b
Mathieu Desnoyers [Wed, 12 May 2021 18:09:00 +0000 (14:09 -0400)]
Fix: ust: keep using lttng-ust-sock-8 and lttng-ust-wait-8 filenames
Replicate a change from a lttng-ust header for which there is an
internal copy within lttng-tools for building without lttng-ust.
lttng-ust commit
6a359b8a4006 ("Bump LTTNG_UST_ABI version from 8.1 to
9.0") attempted to ensure that a session daemon linked against an old
lttng-ust-ctl (2.12) would not attempt to interact with newer
applications.
This was done by increasing the major ABI version number, but
introducing LTTNG_UST_ABI_MAJOR_VERSION_OLDEST_COMPATIBLE (set to 8) as
a mean to allow session daemon to accept both major versions 8 and 9.
Unfortunately, changing LTTNG_UST_ABI_MAJOR_VERSION means the filenames
used for communication changed as well, meaning that applications linked
against older lttng-ust 2.12 cannot interact with lttng sessiond linked
against lttng-ust-ctl 2.13, which is unintended.
Therefore, go back to using the previous filenames: lttng-ust-sock-8,
and lttng-ust-wait-8 for communication.
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I121c6e5aa13637f13b996dd9e31e06d060b52ca6
Mathieu Desnoyers [Wed, 7 Oct 2020 20:42:05 +0000 (16:42 -0400)]
Fix: Handle SIGBUS in sessiond and consumerd
There is an issue with the security model of lib ring buffer (lttng-ust)
vs SIGBUS handling by consumer daemon. We do not handle SIGBUS in the
consumer daemon. An application using ftruncate on a ring buffer shm
could cause the consumer to be killed with SIGBUS.
Wire up SIGBUS handling in the session daemon as well given that it also
uses liblttng-ust-ctl.
This depends on "liblttng-ust-ctl: Implement SIGBUS handling" in
lttng-ust, which extends the API of liblttng-ust-ctl, which requires
the user application to define the TLS sigbus state with
DEFINE_LTTNG_UST_SIGBUS_STATE(). It therefore needs to be introduced in
locked-step between lttng-ust and lttng-tools.
Considering that this change in liblttng-ust-ctl modifies the ABI, it is
done with a major soname version bump of the library, so it is allowed
to break the API.
Depends-on: lttng-ust: I7ade988e3e68a87930fbcee3e14e59c3fb66e755
Fixes: #1284
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I76a91616bd35b21c5e891c8306c73ed5e8725ebb
Jérémie Galarneau [Thu, 13 May 2021 19:45:43 +0000 (15:45 -0400)]
Clean-up: rename double 'lttng' prefixed functions
Rename `lttng_lttng_ust_ctl_flush_buffer` to `lttng_ust_flush_buffer`
since the double prefix is odd, but needed to work-around a clash
with symbols introduced in liblttng-ust-ctl as part of 2.13.
Two functions stubs are not used are removed:
- lttng_lttng_ust_ctl_get_mmap_read_offset,
- lttng_lttng_ust_ctl_get_mmap_base.
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I9a924f503c7d409ed1a28768d07cbbad9d23f503
Philippe Proulx [Thu, 13 May 2021 02:59:59 +0000 (22:59 -0400)]
lttng-{enable-event(1),event-rule(7)}: `--filter` is not always avail.
The `--filter` option of both lttng-enable-event(1) and a common event
rule specification is not available with the Linux kprobe, kretprobe,
and user space probe instrumentation point types.
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I2cea488359bbe8ac8494d785fe3282419ee66d46
Philippe Proulx [Thu, 13 May 2021 02:52:25 +0000 (22:52 -0400)]
lttng(1)/lttng-create(1): document `--relayd-path`
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I83d65e13834593c97e296db2505dc97f6a8e4568
Philippe Proulx [Thu, 13 May 2021 02:51:41 +0000 (22:51 -0400)]
doc/man: document `LTTNG_SESSIOND_PATH` env. var. like `--sessiond-path`
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: Ie6ff3f2f1003d506e5d4a351af0f811b4ca8b556
Philippe Proulx [Thu, 13 May 2021 02:24:09 +0000 (22:24 -0400)]
lttng-save(1): document `--all` option in "SYNOPSIS" and "DESCRIPTION"
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I895e2c8277cb8c1b7644f6d8607cd77230706515
Jonathan Rajotte [Tue, 1 Dec 2020 17:19:53 +0000 (12:19 -0500)]
Fix: snapshot path have domain subdir duplicate "ust/ust" or "kernel/kernel"
Observed issue
==============
lttng-ivc observed unexpected path generated for streamed snapshot:
joraj-alpa/
test-
20190319-120000-
20210113-110101/
snapshot-1-
20210113-110102-0/
* ust/
* ust/
pid/
app-ust-
2362198-
20210113-110101/
channel_0
channel_1
metadata
channel_2
channel_3
"ust" the domain subdir is present two-time instead off only one time.
The same problem is seen for kernel snapshots.
Cause
=====
Based on dissection the problem was introduced by commit
5da88b0f58d7f838068037ea449ddfb25d3e85ad [1]
For snapshots, the consumer output object of the snapshot output and
information is fetched from the *original* consumer output.
(code block around src/bin/lttng-sessiond/cmd.c:4748)
The snapshot consumer output does not contains the necessary information
to populate domain_subdir on copy (domain_subdir is '\0').
This would lead to a len evaluation of 1 for the consumer_path_offset in
setup_channel_trace_path:70. This would end up not "skipping" the "ust"
and "kernel" part of the path.
Solution
========
Part of the solution is to copy the domain_subdir from the original
session consumer output to the snapshot output.
Still, the problem was still present since that now that the
domain_subdir was not "\0", the value was suffixed to the passed
session_path. In the snapshot code path, "ust/" and "kernel/" were
already present in the session_path passed to setup_channel_trace_path.
A quick modification at the caller level in the snapshot code path fixes
the issues once and for all.
Tests
=======
The test suit is augmented for certain key tests to validate the
complete path of a trace.
Path validation is based on crude bash pattern matching.
Known drawbacks
=========
None
References
==========
[1] https://github.com/lttng/lttng-tools/commit/
5da88b0f58d7f838068037ea449ddfb25d3e85ad
Signed-off-by: Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: Ie7cd2d5471ee3a942fa511e2f4cab09e3aa499e4
Jérémie Galarneau [Tue, 11 May 2021 18:37:02 +0000 (14:37 -0400)]
Fix: error: remove trailing period from error descriptions
Trailing periods in some error descriptions cause the client to print
two dots at the end of some error messages:
Error: Failed to register trigger: Tracing the kernel requires a root
lttng-sessiond daemon, as well as "tracing" group membership or root
user ID for the lttng client..
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: Ib6522252fb716b1baad3c7416e2db150c614702c
Jérémie Galarneau [Mon, 10 May 2021 19:02:51 +0000 (15:02 -0400)]
Make the subitems array a part of action_work_item
Make the subitems array a part of action_work_item instead of allocating
it dynamically when a trigger is enqueued for a given action executor.
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I474e43ba3ba9267d629d3ce561c8677c90bddf27
Jérémie Galarneau [Tue, 11 May 2021 19:52:50 +0000 (15:52 -0400)]
Test: fix: firing policy name has changed
The firing policy name from "after every" to "every" in
4edabba83. The
tests are adapted to reflect this change.
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: Ic563c8ce959a6876e1300079ed236c83072efc58
Philippe Proulx [Thu, 6 May 2021 20:50:28 +0000 (16:50 -0400)]
lttng-add-trigger(1): add usage examples
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: Iac386141968106e648da67498696ecba9524491e
Philippe Proulx [Thu, 6 May 2021 20:50:17 +0000 (16:50 -0400)]
lttng-add-context(1): add usage examples
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I8ce928325a659676210ea9d2647ce7223f9527aa
Philippe Proulx [Thu, 6 May 2021 20:19:39 +0000 (16:19 -0400)]
list_triggers.c: replace "after every" -> "every"
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: If6121fda5bb6d7cf5c941c1ca134191c72518422
Philippe Proulx [Thu, 6 May 2021 20:10:01 +0000 (16:10 -0400)]
Fix: add_trigger.c: `goto error` with a wrong UID for `--owner-uid`
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I8650af1f43e8ed8bad58a928cfcdf78d382212f1
Philippe Proulx [Thu, 6 May 2021 19:15:29 +0000 (15:15 -0400)]
lttng-add-context(1): use a description list to explain `--channel`
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: Ie2d701820bf1e086205254c0712fe088c3295b2d
Philippe Proulx [Thu, 6 May 2021 19:09:58 +0000 (15:09 -0400)]
doc/man/manpage.xsl: indent the body of formal (example) blocks
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I184b1bc54728cf0d770bc44f9f0923b9f8724396
Philippe Proulx [Thu, 6 May 2021 18:45:26 +0000 (14:45 -0400)]
doc/man: lttng(1) command pages: always include `common-footer.txt`
The end of an lttng(1) command manual page source now looks like this:
include::common-lttng-cmd-help-options.txt[]
include::common-lttng-cmd-after-options.txt[]
include::common-footer.txt[]
`common-lttng-cmd-after-options.txt` contains the "EXIT STATUS",
"ENVIRONMENT", and "FILES" sections.
`common-footer.txt` begins with the "RESOURCES" section.
This will make it possible to insert an "EXAMPLES" section between
`common-lttng-cmd-after-options.txt` and `common-footer.txt`.
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I1eee42d7386f4671d9825e9d3e131e54f868ee39
Philippe Proulx [Thu, 6 May 2021 18:14:08 +0000 (14:14 -0400)]
doc/man: follow man-pages(7) for section names/order and for "SEE ALSO"
Changes, following the "Sections within a manual page" section of
man-pages(7):
* Rename the "ENVIRONMENT VARIABLES" section to "ENVIRONMENT".
* Rename the "COPYRIGHTS" section to "COPYRIGHT".
* Move the "EXIT STATUS" section immediately after the "OPTIONS"
section.
* Remove the "BUGS" section.
Such a section indicates known bugs (why would you ever have such
a section anyway?).
The "RESOURCES" section now contains the URL of our bug tracker.
* Sort the manual pages by section, and then by name in the "SEE ALSO"
section.
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I3d91073ec876efd98dcc723ddf40272c814663dd
Francis Deslauriers [Fri, 7 May 2021 21:44:52 +0000 (17:44 -0400)]
Fix: action-executor: leak of `work_item::subitems` field
This leak can be reproduced by adding a trigger and looking at the used
memory of the lttng-sessiond process.
Valgrind reports the following leak:
==2472== 7,087,968 bytes in 147,666 blocks are definitely lost in loss record 24 of 24
==2472== at 0x4C31B25: calloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==2472== by 0x191C37: zmalloc (macros.h:45)
==2472== by 0x195234: action_executor_enqueue_trigger (action-executor.c:913)
==2472== by 0x171AD7: dispatch_one_event_notifier_notification (notification-thread-events.c:4626)
==2472== by 0x171D1E: handle_one_event_notifier_notification (notification-thread-events.c:4715)
==2472== by 0x171DA4: handle_notification_thread_event_notification (notification-thread-events.c:4730)
==2472== by 0x164EA6: handle_event_notification_pipe (notification-thread.c:591)
==2472== by 0x1656C3: thread_notification (notification-thread.c:727)
==2472== by 0x17BD16: launch_thread (thread.c:66)
==2472== by 0x5F086DA: start_thread (pthread_create.c:463)
==2472== by 0x624188E: clone (clone.S:95)
Signed-off-by: Francis Deslauriers <francis.deslauriers@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I3d98e3ae18c5b2d7f400407842a7de17716f680c
Simon Marchi [Tue, 27 Apr 2021 22:00:28 +0000 (18:00 -0400)] 
lttng: change a few instances of trigger "id" to "name"
The term trigger "id" has been changed to trigger "name", these are
leftovers. Fix them.
Change-Id: Ic05925af1cd25917de75a0a4d061324604e5a599
Signed-off-by: Simon Marchi <simon.marchi@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Simon Marchi [Tue, 27 Apr 2021 18:51:08 +0000 (14:51 -0400)]
Change "event rule hit" to "event-rule matches" in user interface strings
The condition name was changed from "event rule hit" to "event rule
matches", but there are some leftover user-visible strings with the old
name. Fix them.
Change-Id: I619c9265d68ca6bf4a3ac11ef38cabc715b01110
Signed-off-by: Simon Marchi <simon.marchi@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Jonathan Rajotte [Thu, 6 May 2021 15:14:52 +0000 (11:14 -0400)]
Fix: relayd: live: data is missing between viewer attach and retry
Observed issue
==============
Data produced between the time a live viewer attach and a viewer
subsequent "polling" is missing from the point of view of the viewer.
Using the following reproducer:
# A lttng-sessiond is already running
lttng-relayd -b -vvv > relayd.log 2>&1
lttng create live --live
lttng enable-event -u "hello_world:*"
lttng start
date
# Set the "polling" interval at ~30 seconds
babeltrace2 --retry-duration=
30000000 -i lttng-live net://localhost/host/$HOSTNAME/live &
pid=$!
# Make sure we are in the retry phase of bt2
date
sleep 2
# Produce events
# Note here that hello perform a sleep of 1 seconds before generating
# 10 events to make sure lttng-ust had time to register. A total of
# 100 events is generated.
date
for i in `seq 1 10`; do
./hello
done
# Here we expect to see 100 events outputted at some point (~18
# seconds (30 - 2 - 10) from that time).
# No events are received by babeltrace2.
date
sleep 40
date
# We retry the same exercise a second time.
echo "Moving to phase 2"
date
for i in `seq 1 10`; do
./hello
done
# Here data is received correctly.
date
sleep 40
date
kill $pid
wait
lttng destroy live
pkill lttng-relayd
Cause
=====
At the moment the viewer attach is done, no streams exist. On the
following viewer_get_new_streams (~30 seconds later), streams now exist
since they were allocated lazily following the first application
registration, but LTTNG_VIEWER_SEEK_LAST is used. This essentially
"discards" any events in the stream that happened between the attach
time and the viewer_get_new_stream execution.
Note that the same problem would happen if a new UID (in per-uid mode)
would happen to begin tracing in between viewer retry.
Solution
========
Always use `LTTNG_VIEWER_SEEK_BEGINNING` during
`viewer_get_new_streams`.
Known drawbacks
=========
This does not fix the per-pid problem where an app run and die in between
the viewer retries.
References
==========
https://lists.lttng.org/pipermail/lttng-dev/2021-May/029953.html
Signed-off-by: Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I92fbe6511fb93e31d20922b4eef5c9a221e07716
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