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>
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>
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>
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>
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>
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>
