Changes in functions

4a3134b1 - selftests/tracing: Test only toplevel README file not the instances

Thu, 20 Feb 2025 18:58:00 +0000

selftests/tracing: Test only toplevel README file not the instancesFor the tests that have both a README attribute as well as the instanceflag to run the tests as an instance, the instance version will alwaysexit with UNSUPPORTED. That's because the instance directory does notcontain a README file. Currently, the tests check for a README file in thedirectory that the test runs in and if there's a requirement for somethingto be present in the README file, it will not find it, as the instancedirectory doesn't have it.Have the tests check if the current directory is an instance directory,and if it is, check two directories above the current directory for theREADME file: /sys/kernel/tracing/README /sys/kernel/tracing/instances/foo/../../READMELink: https://lore.kernel.org/r/20250220185846.130216270@goodmis.orgSigned-off-by: Steven Rostedt (Google) Signed-off-by: Shuah Khan List of files: /linux-6.15/tools/testing/selftests/ftrace/test.d/functions

8b55572e - tracing/selftests: Add tracefs mount options test

Wed, 30 Oct 2024 17:17:50 +0000

tracing/selftests: Add tracefs mount options testAdd a selftest to check that the tracefs gid mount option is appliedcorrectly. ./ftracetest test.d/00basic/mount_options.tcUse the new readme string "[gid=] as a requirement and also updatetest_ownership.tc requirements to use this.Cc: Eric Sandeen Cc: Mathieu Desnoyers Cc: Shuah Khan Cc: Ali Zahraee Cc: Christian Brauner Cc: David Howells Cc: Masami Hiramatsu Link: https://lore.kernel.org/20241030171928.4168869-4-kaleshsingh@google.comSigned-off-by: Kalesh Singh Signed-off-by: Steven Rostedt (Google) List of files: /linux-6.15/tools/testing/selftests/ftrace/test.d/functions

4aa4d4de - selftests/ftrace: Add check for ping command for trigger tests

Fri, 28 Oct 2022 07:16:09 +0000

selftests/ftrace: Add check for ping command for trigger testsAll these tests depend on the ping command and will fail if it is notfound. Allow tests to specify dependencies on programs through the'requires' field. Add dependency on 'ping' for some of the triggertests.Link: https://lore.kernel.org/all/20221017104312.16af5467@gandalf.local.home/Reported-by: Akanksha J N Acked-by: Masami Hiramatsu (Google) Suggested-by: Steven Rostedt (Google) Reviewed-by: Steven Rostedt (Google) Signed-off-by: Naveen N. Rao Signed-off-by: Shuah Khan List of files: /linux-6.15/tools/testing/selftests/ftrace/test.d/functions

25b95138 - selftests/ftrace: Stop tracing while reading the trace file by default

Tue, 26 Oct 2021 23:22:11 +0000

selftests/ftrace: Stop tracing while reading the trace file by defaultStop tracing while reading the trace file by default, to preventthe test results while checking it and to avoid taking a long timeto check the result.If there is any testcase which wants to test the tracing while readingthe trace file, please override this setting inside the test case.This also recovers the pause-on-trace when clean it up.Link: https://lkml.kernel.org/r/163529053143.690749.15365238954175942026.stgit@devnote2Signed-off-by: Masami Hiramatsu Signed-off-by: Steven Rostedt (VMware) List of files: /linux-6.15/tools/testing/selftests/ftrace/test.d/functions

210f9df0 - selftests/ftrace: Fix requirement check of README file

Fri, 20 Aug 2021 20:46:47 +0000

selftests/ftrace: Fix requirement check of README fileThe selftest for ftrace checks some features by checking if the README hastext that states the feature is supported by that kernel. Unfortunately,this check gives false positives because it many not be checked if there'sspaces in the string to check. This is due to the compare between therequired variable with the ":README" string stripped, because neither hasquotes around them.Link: https://lkml.kernel.org/r/20210820204742.087177341@goodmis.orgCc: "Tzvetomir Stoyanov" Cc: Tom Zanussi Cc: Shuah Khan Cc: Shuah Khan Cc: linux-kselftest@vger.kernel.orgCc: stable@vger.kernel.orgFixes: 1b8eec510ba64 ("selftests/ftrace: Support ":README" suffix for requires")Acked-by: Masami Hiramatsu Signed-off-by: Steven Rostedt (VMware) List of files: /linux-6.15/tools/testing/selftests/ftrace/test.d/functions

aaac2820 - selftests/ftrace: Add clear_dynamic_events() to test cases

Thu, 19 Aug 2021 15:26:07 +0000

selftests/ftrace: Add clear_dynamic_events() to test casesAdd a function to remove all dynamic events from the tracing directory. Itrequires a loop as some of the dynamic events may depend on others beingremoved first. Also add a safety that prevents it from looping infinitelydue to a bug where an event never gets removed.Link: https://lkml.kernel.org/r/20210819152825.348941368@goodmis.orgCc: "Tzvetomir Stoyanov" Cc: Tom Zanussi Cc: Shuah Khan Cc: Shuah Khan Cc: linux-kselftest@vger.kernel.orgAcked-by: Masami Hiramatsu Signed-off-by: Steven Rostedt (VMware) List of files: /linux-6.15/tools/testing/selftests/ftrace/test.d/functions

dc6bf4da - selftests/ftrace: Use $FUNCTION_FORK to reference kernel fork function

Mon, 26 Oct 2020 20:20:32 +0000

selftests/ftrace: Use $FUNCTION_FORK to reference kernel fork functionCommit cad6967ac108 ("fork: introduce kernel_clone()") replaced "_do_fork()"with "kernel_clone()". The ftrace selftests reference the fork function inseveral of the tests. The rename will make the tests break, but if thosenames are changed in the tests, they would then break on older kernels. Thesame set of tests should pass older kernels if they have previously passed.Obviously, a new test may not work on older kernels if the test was addeddue to a bug or a new feature.The setup of ftracetest will now create a $FUNCTION_FORK bash variablethat will contain "_do_fork" for older kernels and "kernel_clone" for newerones. It figures out the proper name by examining /proc/kallsyms.Note, available_filter_functions could also be used, but because some testsshould be able to pass without function tracing enabled, it could not beused.Fixes: eea11285dab3 ("tracing: switch to kernel_clone()")Signed-off-by: Steven Rostedt (VMware) Acked-by: Masami Hiramatsu Signed-off-by: Shuah Khan List of files: /linux-6.15/tools/testing/selftests/ftrace/test.d/functions

1b8eec51 - selftests/ftrace: Support ":README" suffix for requires

Wed, 03 Jun 2020 02:41:09 +0000

selftests/ftrace: Support ":README" suffix for requiresAdd ":README" suffix support for the requires list, so thatthe testcase can list up the required string for README fileto the requires list.Note that the required string is treated as a fixed string,instead of regular expression. Also, the testcase can specifya string containing spaces with quotes. E.g.# requires: "place: [:]":READMESigned-off-by: Masami Hiramatsu Reviewed-by: Tom Zanussi Signed-off-by: Shuah Khan List of files: /linux-6.15/tools/testing/selftests/ftrace/test.d/functions

305c8388 - selftests/ftrace: Support ":tracer" suffix for requires

Wed, 03 Jun 2020 02:40:59 +0000

selftests/ftrace: Support ":tracer" suffix for requiresAdd ":tracer" suffix support for the requires list, so thatthe testcase can list up the required tracer (e.g. function)to the requires list.For example, if the testcase requires function_graph tracer,it can write requires list as below instead of checkingavailable_tracers.# requires: function_graph:tracerSigned-off-by: Masami Hiramatsu Reviewed-by: Tom Zanussi Signed-off-by: Shuah Khan List of files: /linux-6.15/tools/testing/selftests/ftrace/test.d/functions

74e60728 - selftests/ftrace: Convert check_filter_file() with requires list

Wed, 03 Jun 2020 02:40:49 +0000

selftests/ftrace: Convert check_filter_file() with requires listSince check_filter_file() is basically checking the filtertracefs file, we can convert it into requires list.Signed-off-by: Masami Hiramatsu Reviewed-by: Tom Zanussi Signed-off-by: Shuah Khan List of files: /linux-6.15/tools/testing/selftests/ftrace/test.d/functions

fa33e623 - selftests/ftrace: Add "requires:" list support

Wed, 03 Jun 2020 02:40:28 +0000

selftests/ftrace: Add "requires:" list supportIntroduce "requires:" list to check required ftrace interfacefor each test. This will simplify the interface checking codeand unify the error message. Another good point is, it canskip the ftrace initializing.Note that this requires list must be written as a shellcomment.Signed-off-by: Masami Hiramatsu Reviewed-by: Tom Zanussi Signed-off-by: Shuah Khan List of files: /linux-6.15/tools/testing/selftests/ftrace/test.d/functions

8e923a21 - selftests/ftrace: Use printf for backslash included command

Mon, 11 May 2020 13:36:27 +0000

selftests/ftrace: Use printf for backslash included commandSince the built-in echo has different behavior in POSIX shell(dash) and bash, kprobe_syntax_errors.tc can fail on dash whichinterpret backslash escape automatically.To fix this issue, we explicitly use printf "%s" (not interpretbackslash escapes) if the command string can include backslash.Reported-by: Liu Yiding Suggested-by: Xiao Yang Signed-off-by: Masami Hiramatsu Signed-off-by: Shuah Khan List of files: /linux-6.15/tools/testing/selftests/ftrace/test.d/functions

16bcd0f5 - selftests/ftrace: Check required filter files before running test

Wed, 22 Apr 2020 09:58:07 +0000

selftests/ftrace: Check required filter files before running testWithout CONFIG_DYNAMIC_FTRACE, some tests get failure because requiredfilter files(set_ftrace_filter/available_filter_functions/stack_trace_filter)are missing. So implement check_filter_file() and make all related testscheck required filter files by it.BTW: set_ftrace_filter and available_filter_functions are introduced togetherso just check either of them.Signed-off-by: Xiao Yang Acked-by: Masami Hiramatsu Signed-off-by: Shuah Khan List of files: /linux-6.15/tools/testing/selftests/ftrace/test.d/functions

fd1baf6c - selftests/ftrace: Fix to check the existence of set_ftrace_filter

Tue, 26 Nov 2019 08:34:16 +0000

selftests/ftrace: Fix to check the existence of set_ftrace_filterIf we run ftracetest on the kernel with CONFIG_DYNAMIC_FTRACE=n,there is no set_ftrace_filter and all test cases are failed, becausereset_ftrace_filter() returns an error.Let's check whether set_ftrace_filter exists in reset_ftrace_filter()and clean up only set_ftrace_notrace in initialize_ftrace().Signed-off-by: Masami Hiramatsu Reviewed-by: Steven Rostedt (VMware) Signed-off-by: Shuah Khan List of files: /linux-6.15/tools/testing/selftests/ftrace/test.d/functions

7f5291da - selftests/ftrace: Add syntax error test for multiprobe

Wed, 19 Jun 2019 15:09:05 +0000

selftests/ftrace: Add syntax error test for multiprobeAdd syntax error test cases for multiprobe appendingerrors.Link: http://lkml.kernel.org/r/156095694541.28024.11918630805148623119.stgit@devnote2Signed-off-by: Masami Hiramatsu Signed-off-by: Steven Rostedt (VMware) List of files: /linux-6.15/tools/testing/selftests/ftrace/test.d/functions

6e55f320 - ftrace/selftest: Test if set_event/ftrace_pid exists before writing

Wed, 03 Jul 2019 19:46:08 +0000

ftrace/selftest: Test if set_event/ftrace_pid exists before writingWhile testing on a very old kernel (3.5), the tests failed because the writeto set_event_pid in the setup code, did not exist. The tests themselvescould pass, but the setup failed causing an error.Other files test for existance before writing to them. Do the same forset_event_pid and set_ftrace_pid.Acked-by: Masami Hiramatsu Signed-off-by: Steven Rostedt (VMware) List of files: /linux-6.15/tools/testing/selftests/ftrace/test.d/functions

c5e4114f - selftests/ftrace: Move kprobe/uprobe check_error() to test.d/functions

Sun, 31 Mar 2019 23:48:21 +0000

selftests/ftrace: Move kprobe/uprobe check_error() to test.d/functionsThe k/uprobe_sytax_errors test case defines a check_error() functionused to run a command and check the position of the caret in theoutput.This would be useful for other ftrace facilities too, so move it totest.d/functions for use by anyone. In the process, rename it toftrace_errlog_check() and parametrize it for general use.Link: http://lkml.kernel.org/r/9f88080a06f1755811f69081926afe7e5cb53178.1554072478.git.tom.zanussi@linux.intel.comAcked-by: Masami Hiramatsu Signed-off-by: Tom Zanussi Signed-off-by: Steven Rostedt (VMware) List of files: /linux-6.15/tools/testing/selftests/ftrace/test.d/functions

cec3adf5 - selftests/ftrace: Use loopback address instead of localhost

Thu, 30 Aug 2018 14:17:10 +0000

selftests/ftrace: Use loopback address instead of localhostUse raw loopback address instead of localhost, because"localhost" can depend on nsswitch and in some casewe can not resolve the localhost.Signed-off-by: Masami Hiramatsu Signed-off-by: Shuah Khan (Samsung OSG) List of files: /linux-6.15/tools/testing/selftests/ftrace/test.d/functions

7590472e - selftests/ftrace: More initialize features in initialize_ftrace

Thu, 30 Aug 2018 14:14:19 +0000

selftests/ftrace: More initialize features in initialize_ftraceClear pid filter, synthetic_events, snapshots,ftrace filter, and trace log in initialize_ftrace(),since those are used in test cases.Signed-off-by: Masami Hiramatsu Acked-by: Steven Rostedt (VMware) Signed-off-by: Shuah Khan (Samsung OSG) List of files: /linux-6.15/tools/testing/selftests/ftrace/test.d/functions

922a418d - ftrace/selftest: Fix reset_trigger() to handle triggers with filters

Mon, 14 May 2018 20:03:58 +0000

ftrace/selftest: Fix reset_trigger() to handle triggers with filtersThe reset_trigger() function breaks up the command by a space ' '. This isuseful to ignore the '[active]' word for triggers when removing them. But ifthe trigger has a filter (ie. "if prio < 10") then the filter needs to beattached to the line that is written into the trigger file to remove it. Butthe truncation removes the filter and the triggers are not cleared properly.Before, reset_trigger() did this: # echo 'hist:keys=common_pid if prev_prio < 10' > events/sched/sched_switch/trigger # echo 'hist:keys=common_pid if next_prio < 10' >> events/sched/sched_switch/trigger # cat events/sched/sched_switch/triggerhist:keys=common_pid:vals=hitcount:sort=hitcount:size=2048 if prev_prio < 10 [active]hist:keys=common_pid:vals=hitcount:sort=hitcount:size=2048 if next_prio < 10 [active] reset_trigger() { echo '!hist:keys=common_pid:vals=hitcount:sort=hitcount:size=2048' >> events/sched/sched_switch/trigger } # cat events/sched/sched_switch/triggerhist:keys=common_pid:vals=hitcount:sort=hitcount:size=2048 if prev_prio < 10 [active]hist:keys=common_pid:vals=hitcount:sort=hitcount:size=2048 if next_prio < 10 [active]After, where it includes the filter: reset_trigger() { echo '!hist:keys=common_pid:vals=hitcount:sort=hitcount:size=2048 if prev_prio < 10' >> events/sched/sched_switch/trigger } # cat events/sched/sched_switch/triggerhist:keys=common_pid:vals=hitcount:sort=hitcount:size=2048 if next_prio < 10 [active]Fixes: cfa0963dc474f ("kselftests/ftrace : Add event trigger testcases")Acked-by: Masami Hiramatsu Reviewed-by: Namhyung Kim Signed-off-by: Steven Rostedt (VMware) List of files: /linux-6.15/tools/testing/selftests/ftrace/test.d/functions