Commit Graph

16 Commits

Author SHA1 Message Date
Steven Rostedt 9a154c8911 ftracetest: Fix instance test to use proper shell command for pids
The ftracetest instance test used parsing of the "jobs" output to find the
pid of the subshell that is executed previously. But this is not portable to
all major shells that may run these tests. The proper way to get the pid of
the subshell is the shell command "$!". This will return the pid of the
previously executed command. Use that instead, otherwise the test does not
work in all environments.

Link: http://lkml.kernel.org/r/20151211143617.65f4d7a1@gandalf.local.home

Reported-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2016-02-19 12:11:21 -05:00
Steven Rostedt (Red Hat) 3cbd6a43be ftracetest: Add instance create and delete test
Create a test to test instance creation and deletion. Several tasks are
created that create 3 directories and delete them. The tasks all create the
same directories. This places a stress on the code that creates and deletes
instances.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2015-11-24 09:29:14 -05:00
Ben Hutchings c28628b867 selftests: kprobe: Choose an always-defined function to probe
do_fork() is no longer defined on x86, so probe _do_fork() instead.

Fixes: 3033f14ab7 ("clone: support passing tls argument via C ...")
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-11-03 16:54:51 -07:00
Namhyung Kim 2bfd4d1f8c ftracetest: Do not use usleep directly
The usleep is only provided on distros from Redhat so running ftracetest
on other distro resulted in failures due to the missing usleep.

The reason of using [u]sleep in the test was to generate (scheduler)
events.  It can be done various ways like this:

yield() {  ping localhost -c 1 || sleep .001 || usleep 1 || sleep 1; }

For more information to the history of this patch, please refer to:

Link: http://lkml.kernel.org/r/1427329943-16896-1-git-send-email-namhyung@kernel.org

Reported-by: Michael Ellerman <mpe@ellerman.id.au>
Reported-by: Dave Jones <davej@codemonkey.org.uk>
Reported-by: Luis Henriques <luis.henriques@canonical.com>
Suggested-by: Pádraig Brady <P@draigBrady.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-04-03 09:16:32 -06:00
Michael Ellerman 44164c4ba9 ftracetest: Convert exit -1 to exit $FAIL
POSIX says that exit takes an unsigned integer between 0 and 255, so
using -1 doesn't work on POSIX shells.

There is already a well-defined failure code, $FAIL (1), so use that.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-03-31 10:15:46 -06:00
Michael Ellerman a05ffdce71 ftracetest: Cope properly with stack tracer not being enabled
If the stack tracer (CONFIG_STACK_TRACER) is disabled, the
fgraph-filter-stack test blows chunks:

  [8] ftrace - function graph filters with stack tracer	[FAIL]
  + reset_tracer
  + echo nop
  ./ftracetest: 19: /home/michael/selftests/ftrace/test.d/ftrace/fgraph-filter-stack.tc:
  	cannot create /proc/sys/kernel/stack_tracer_enabled: Directory nonexistent

Fix it by checking if the proc file exists before echoing to it. With
the patch applied it fails correctly with:

  [8] ftrace - function graph filters with stack tracer	[UNSUPPORTED]

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-03-31 10:15:36 -06:00
Namhyung Kim 815b18ea66 ftracetest: Add basic event tracing test cases
This patch adds basic event tracing tests like enable/disable with
top-level, subsystem-level and individual event files.

  # ./ftracetest
  === Ftrace unit tests ===
  [1] Basic trace file check	[PASS]
  [2] Basic trace clock test	[PASS]
  [3] Basic event tracing check	[PASS]
  [4] Basic test for tracers	[PASS]
  [5] event tracing - enable/disable with top level files	[PASS]
  [6] event tracing - enable/disable with subsystem level files	[PASS]
  [7] event tracing - enable/disable with event level files	[PASS]
  [8] ftrace - function graph filters	[PASS]
  [9] ftrace - function profiler with function tracing	[PASS]
  [10] ftrace - function graph filters with stack tracer	[PASS]
  [11] Kretprobe dynamic event with arguments	[PASS]
  [12] Kprobe dynamic event - busy event check	[PASS]
  [13] Kprobe dynamic event with arguments	[PASS]
  [14] Kprobe dynamic event - adding and removing	[PASS]

  # of passed:  14
  # of failed:  0
  # of unresolved:  0
  # of untested:  0
  # of unsupported:  0
  # of xfailed:  0
  # of undefined(test bug):  0

Link: http://lkml.kernel.org/r/1415239470-28705-3-git-send-email-namhyung@kernel.org

Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-11-06 08:40:59 -05:00
Namhyung Kim ce1ac64b93 ftracetest: Clear trace buffer after running kprobe testcases
The kprobe testcases create, use and delete dynamic events during the
test but didn't clear the trace buffer so it'll leave the result after
it finishes.

  # ./ftracetest
  ...

  # cat trace
  # tracer: nop
  #
  # entries-in-buffer/entries-written: 2/2   #P:12
  #
  #                              _-----=> irqs-off
  #                             / _----=> need-resched
  #                            | / _---=> hardirq/softirq
  #                            || / _--=> preempt-depth
  #                            ||| /     delay
  #           TASK-PID   CPU#  ||||    TIMESTAMP  FUNCTION
  #              | |       |   ||||       |         |
        ftracetest-26474 [009] d..1 79417.143782: Unknown type 1099
        ftracetest-26498 [009] d..1 79417.208034: Unknown type 1101

Link: http://lkml.kernel.org/r/1415239470-28705-2-git-send-email-namhyung@kernel.org

Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-11-06 08:39:39 -05:00
Steven Rostedt (Red Hat) c6c93242db ftracetest: Add a couple of ftrace test cases
Added three test cases to get the feel of adding tests to ftracetest.
The three cases are:

  function profiling test, to make sure function profiling still works
   with function tracing (was a regression)

  function graph filter test to make sure that function graph filtering works.

  function graph filter with stack tracing test to make sure that the function
   graph filter does filter and also continues to filter when another function tracer
   is running (like the stack tracer)

Link: http://lkml.kernel.org/r/20141103212737.696365174@goodmis.org
Link: http://lkml.kernel.org/r/20141104153028.602754370@goodmis.org

Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-11-06 08:35:52 -05:00
Steven Rostedt (Red Hat) ee3988c77e ftracetest: Add functions file that holds helper functions
Created the file tools/testing/ftrace/test.d/functions that will
hold helper functions.

Current helper functions include:

 Add clear_trace() helper to reset the trace file

   Used as a descriptive name to show that "echo > trace" is clearing
   the trace file.

 Add disable/enable_tracing() helper calls

   Add calls that disable and enable tracing respectively by echoing
   0 or 1 into tracing_on.

 Add helper reset_tracer() function

    Add a helper function reset_tracer() that will clear the current_tracer
    (echo nop > current_tracer).

Link: http://lkml.kernel.org/r/20141103212737.696365174@goodmis.org
Link: http://lkml.kernel.org/r/20141104153028.465517119@goodmis.org

Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-11-06 08:30:02 -05:00
Heiko Carstens d20058f674 ftracetest: Add kprobes on ftrace testcase
Add a kprobes on ftrace testcase. The testcase verifies that
- enabling and disabling function tracing works on a function which
  already contains a dynamic kprobe
- adding and removing a dynamic kprobe works on a function which is
  already enabled for function tracing

Link: http://lkml.kernel.org/p/1413802323-5297-2-git-send-email-heiko.carstens@de.ibm.com

Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-11-03 14:15:46 -05:00
Masami Hiramatsu 89c5497d1f tracing/kprobes: Add selftest scripts testing kprobe-tracer as startup test
Add two selftest scripts which tests kprobe-tracer as the startup
selftest does.
These test cases are testing that the kprobe_event can accept a
kprobe event with $stack related arguments and a kretprobe event
with $retval argument.

Link: http://lkml.kernel.org/p/20141008040307.13415.45145.stgit@kbuild-f20.novalocal

Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-10-08 11:21:46 -04:00
Masami Hiramatsu 915de2adb5 ftracetest: Add POSIX.3 standard and XFAIL result codes
Add XFAIL and POSIX 1003.3 standard codes (UNRESOLVED/
UNTESTED/UNSUPPORTED) as result codes. These are used for the
results that test case is expected to fail or unsupported
feature (by config).

To return these result code, this introduces exit_unresolved,
exit_untested, exit_unsupported and exit_xfail functions,
which use real-time signals to notify the result code to
ftracetest.

This also set "errexit" option for the testcases, so that
the tests don't need to exit explicitly.

Note that if the test returns UNRESOLVED/UNSUPPORTED/FAIL,
its test log including executed commands is shown on console
and main logfile as below.

  ------
  # ./ftracetest samples/
  === Ftrace unit tests ===
  [1] failure-case example        [FAIL]
  execute: /home/fedora/ksrc/linux-3/tools/testing/selftests/ftrace/samples/fail.tc
  + . /home/fedora/ksrc/linux-3/tools/testing/selftests/ftrace/samples/fail.tc
  ++ cat non-exist-file
  cat: non-exist-file: No such file or directory
  [2] pass-case example   [PASS]
  [3] unresolved-case example     [UNRESOLVED]
  execute: /home/fedora/ksrc/linux-3/tools/testing/selftests/ftrace/samples/unresolved.tc
  + . /home/fedora/ksrc/linux-3/tools/testing/selftests/ftrace/samples/unresolved.tc
  ++ trap exit_unresolved INT
  ++ kill -INT 29324
  +++ exit_unresolved
  +++ kill -s 38 29265
  +++ exit 0
  [4] unsupported-case example    [UNSUPPORTED]
  execute: /home/fedora/ksrc/linux-3/tools/testing/selftests/ftrace/samples/unsupported.tc
  + . /home/fedora/ksrc/linux-3/tools/testing/selftests/ftrace/samples/unsupported.tc
  ++ exit_unsupported
  ++ kill -s 40 29265
  ++ exit 0
  [5] untested-case example       [UNTESTED]
  [6] xfail-case example  [XFAIL]

  # of passed:  1
  # of failed:  1
  # of unresolved:  1
  # of untested:  1
  # of unsupported:  1
  # of xfailed:  1
  # of undefined(test bug):  0
  ------

Link: http://lkml.kernel.org/p/20140929120211.30203.99510.stgit@kbuild-f20.novalocal

Acked-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-10-03 16:44:02 -04:00
Masami Hiramatsu 2909ef28b1 ftracetest: Add kprobe basic testcases
Add basic testcases for kprobe dynamic events.
This also shows that the ftracetest accepts sub-directory
for new testcases.

Link: http://lkml.kernel.org/p/20140922234254.23415.46964.stgit@kbuild-f20.novalocal

Acked-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-09-23 09:32:27 -04:00
Masami Hiramatsu 03e166450f ftracetest: Add ftrace basic testcases
Add ftrace basic testcases. This just checks ftrace debugfs
interface works as it is designed.

Link: http://lkml.kernel.org/p/20140922234252.23415.62897.stgit@kbuild-f20.novalocal

Acked-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-09-23 09:32:00 -04:00
Masami Hiramatsu 6e68e6c5e4 ftracetest: Initial commit for ftracetest
ftracetest is a collection of testcase shell-scripts for ftrace.
To avoid regressions of ftrace, these testcases check correct
ftrace behaviors. If someone would like to add any features on
ftrace, the patch series should have at least one testcase for
checking the new behavior.

Link: http://lkml.kernel.org/p/20140922234250.23415.68758.stgit@kbuild-f20.novalocal

Acked-by: Shuah Khan <shuahkh@osg.samsung.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-09-23 09:31:05 -04:00