[PATCH 1/3] ftracetest: Use logfile name supported by busybox's mktemp

[PATCH 1/3] ftracetest: Use logfile name supported by busybox's mktemp

[Namhyung Kim]

When I run the ftracetest in a busybox docker container, I saw
following error.  Make the logfile template to comply with busybox's
mktemp.  It also keep the logfiles under the logs directory.

  # /linux/tools/testing/selftests/ftrace/ftracetest
  === Ftrace unit tests ===
  mktemp: unrecognized option `--tmpdir=/linux/tools/testing/selftests/ftrace/logs/20141106-003624/'
  BusyBox v1.22.1 (2014-05-22 23:22:11 UTC) multi-call binary.

  Usage: mktemp [-dt] [-p DIR] [TEMPLATE]

  Create a temporary file with name based on TEMPLATE and print its name.
  TEMPLATE must end with XXXXXX (e.g. [/dir/]nameXXXXXX).
  Without TEMPLATE, -t tmp.XXXXXX is assumed.

  	-d	  Make directory, not file
  	-q	  Fail silently on errors
  	-t	  Prepend base directory name to TEMPLATE
  	-p DIR	  Use DIR as a base directory (implies -t)
  	-u Do not create anything; print a name

  Base directory is: -p DIR, else $TMPDIR, else /tmp

  [1] Basic trace file check/linux/tools/testing/selftests/ftrace/ftracetest: line 244: can't create : nonexistent directory
  /linux/tools/testing/selftests/ftrace/ftracetest: line 244: can't create : nonexistent directory
						  [FAIL]

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---
 tools/testing/selftests/ftrace/ftracetest | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/ftrace/ftracetest b/tools/testing/selftests/ftrace/ftracetest
index 8cc01c14262f..93b1bf5eadb5 100755
--- a/tools/testing/selftests/ftrace/ftracetest
+++ b/tools/testing/selftests/ftrace/ftracetest
@@ -218,7 +218,7 @@ trap 'SIG_RESULT=$XFAIL' $SIG_XFAIL
 # Run one test case
 run_test() { # testfile
   local testname=`basename $1`
-  local testlog=`mktemp --tmpdir=$LOG_DIR ${testname}-XXXXXX.log`
+  local testlog=`mktemp $LOG_DIR/${testname}-log.XXXXXX`
   testcase $1
   echo "execute: "$1 > $testlog
   SIG_RESULT=0
-- 
2.1.2

[PATCH 2/3] ftracetest: Clear trace buffer after running kprobe testcases

[Namhyung Kim]

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

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---
 tools/testing/selftests/ftrace/test.d/kprobe/add_and_remove.tc | 1 +
 tools/testing/selftests/ftrace/test.d/kprobe/busy_check.tc     | 1 +
 tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args.tc    | 1 +
 tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_args.tc | 1 +
 4 files changed, 4 insertions(+)

diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/add_and_remove.tc b/tools/testing/selftests/ftrace/test.d/kprobe/add_and_remove.tc
index 1b8b665ab2b3..a5a426211129 100644
--- a/tools/testing/selftests/ftrace/test.d/kprobe/add_and_remove.tc
+++ b/tools/testing/selftests/ftrace/test.d/kprobe/add_and_remove.tc
@@ -9,3 +9,4 @@ echo p:myevent do_fork > kprobe_events
 grep myevent kprobe_events
 test -d events/kprobes/myevent
 echo > kprobe_events
+clear_trace
diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/busy_check.tc b/tools/testing/selftests/ftrace/test.d/kprobe/busy_check.tc
index b55c84003587..d8c7bb6581fe 100644
--- a/tools/testing/selftests/ftrace/test.d/kprobe/busy_check.tc
+++ b/tools/testing/selftests/ftrace/test.d/kprobe/busy_check.tc
@@ -11,3 +11,4 @@ echo 1 > events/kprobes/myevent/enable
 echo > kprobe_events && exit 1 # this must fail
 echo 0 > events/kprobes/myevent/enable
 echo > kprobe_events # this must succeed
+clear_trace
diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args.tc
index a603d3f8db7b..c45ee2761354 100644
--- a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args.tc
+++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args.tc
@@ -12,5 +12,6 @@ echo 1 > events/kprobes/testprobe/enable
 ( echo "forked")
 echo 0 > events/kprobes/testprobe/enable
 echo "-:testprobe" >> kprobe_events
+clear_trace
 test -d events/kprobes/testprobe && exit 1 || exit 0
 
diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_args.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_args.tc
index 283c29e7f7c4..31717985acc7 100644
--- a/tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_args.tc
+++ b/tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_args.tc
@@ -12,4 +12,5 @@ echo 1 > events/kprobes/testprobe2/enable
 ( echo "forked")
 echo 0 > events/kprobes/testprobe2/enable
 echo '-:testprobe2' >> kprobe_events
+clear_trace
 test -d events/kprobes/testprobe2 && exit 1 || exit 0
-- 
2.1.2

[PATCH 3/3] ftracetest: Add basic event tracing test cases

[Namhyung Kim]

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

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---
 .../selftests/ftrace/test.d/00basic/basic4.tc      |  5 ++
 .../selftests/ftrace/test.d/event/event-enable.tc  | 53 ++++++++++++++++++++++
 .../ftrace/test.d/event/subsystem-enable.tc        | 53 ++++++++++++++++++++++
 .../ftrace/test.d/event/toplevel-enable.tc         | 47 +++++++++++++++++++
 4 files changed, 158 insertions(+)
 create mode 100644 tools/testing/selftests/ftrace/test.d/00basic/basic4.tc
 create mode 100644 tools/testing/selftests/ftrace/test.d/event/event-enable.tc
 create mode 100644 tools/testing/selftests/ftrace/test.d/event/subsystem-enable.tc
 create mode 100644 tools/testing/selftests/ftrace/test.d/event/toplevel-enable.tc

diff --git a/tools/testing/selftests/ftrace/test.d/00basic/basic4.tc b/tools/testing/selftests/ftrace/test.d/00basic/basic4.tc
new file mode 100644
index 000000000000..fd9c49a13612
--- /dev/null
+++ b/tools/testing/selftests/ftrace/test.d/00basic/basic4.tc
@@ -0,0 +1,5 @@
+#!/bin/sh
+# description: Basic event tracing check
+test -f available_events -a -f set_event -a -d events
+# check scheduler events are available
+grep -q sched available_events && exit 0 || exit -1
\ No newline at end of file
diff --git a/tools/testing/selftests/ftrace/test.d/event/event-enable.tc b/tools/testing/selftests/ftrace/test.d/event/event-enable.tc
new file mode 100644
index 000000000000..668616d9bb03
--- /dev/null
+++ b/tools/testing/selftests/ftrace/test.d/event/event-enable.tc
@@ -0,0 +1,53 @@
+#!/bin/sh
+# description: event tracing - enable/disable with event level files
+
+do_reset() {
+    echo > set_event
+    clear_trace
+}
+
+fail() { #msg
+    do_reset
+    echo $1
+    exit -1
+}
+
+if [ ! -f set_event -o ! -d events/sched ]; then
+    echo "event tracing is not supported"
+    exit_unsupported
+fi
+
+reset_tracer
+do_reset
+
+echo 'sched:sched_switch' > set_event
+usleep 1
+
+count=`cat trace | grep sched_switch | wc -l`
+if [ $count -eq 0 ]; then
+    fail "sched_switch events are not recorded"
+fi
+
+do_reset
+
+echo 1 > events/sched/sched_switch/enable
+usleep 1
+
+count=`cat trace | grep sched_switch | wc -l`
+if [ $count -eq 0 ]; then
+    fail "sched_switch events are not recorded"
+fi
+
+do_reset
+
+echo 0 > events/sched/sched_switch/enable
+usleep 1
+
+count=`cat trace | grep sched_switch | wc -l`
+if [ $count -ne 0 ]; then
+    fail "sched_switch events should not be recorded"
+fi
+
+do_reset
+
+exit 0
diff --git a/tools/testing/selftests/ftrace/test.d/event/subsystem-enable.tc b/tools/testing/selftests/ftrace/test.d/event/subsystem-enable.tc
new file mode 100644
index 000000000000..655c415b6e7f
--- /dev/null
+++ b/tools/testing/selftests/ftrace/test.d/event/subsystem-enable.tc
@@ -0,0 +1,53 @@
+#!/bin/sh
+# description: event tracing - enable/disable with subsystem level files
+
+do_reset() {
+    echo > set_event
+    clear_trace
+}
+
+fail() { #msg
+    do_reset
+    echo $1
+    exit -1
+}
+
+if [ ! -f set_event -o ! -d events/sched ]; then
+    echo "event tracing is not supported"
+    exit_unsupported
+fi
+
+reset_tracer
+do_reset
+
+echo 'sched:*' > set_event
+usleep 1
+
+count=`cat trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l`
+if [ $count -lt 3 ]; then
+    fail "at least fork, exec and exit events should be recorded"
+fi
+
+do_reset
+
+echo 1 > events/sched/enable
+usleep 1
+
+count=`cat trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l`
+if [ $count -lt 3 ]; then
+    fail "at least fork, exec and exit events should be recorded"
+fi
+
+do_reset
+
+echo 0 > events/sched/enable
+usleep 1
+
+count=`cat trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l`
+if [ $count -ne 0 ]; then
+    fail "any of scheduler events should not be recorded"
+fi
+
+do_reset
+
+exit 0
diff --git a/tools/testing/selftests/ftrace/test.d/event/toplevel-enable.tc b/tools/testing/selftests/ftrace/test.d/event/toplevel-enable.tc
new file mode 100644
index 000000000000..480845774007
--- /dev/null
+++ b/tools/testing/selftests/ftrace/test.d/event/toplevel-enable.tc
@@ -0,0 +1,47 @@
+#!/bin/sh
+# description: event tracing - enable/disable with top level files
+
+do_reset() {
+    echo > set_event
+    clear_trace
+}
+
+fail() { #msg
+    do_reset
+    echo $1
+    exit -1
+}
+
+if [ ! -f available_events -o ! -f set_event -o ! -d events ]; then
+    echo "event tracing is not supported"
+    exit_unsupported
+fi
+
+reset_tracer
+do_reset
+
+echo '*:*' > set_event
+count=`cat trace | grep -v ^# | wc -l`
+if [ $count -eq 0 ]; then
+    fail "none of events are recorded"
+fi
+
+do_reset
+
+echo 1 > events/enable
+count=`cat trace | grep -v ^# | wc -l`
+if [ $count -eq 0 ]; then
+    fail "none of events are recorded"
+fi
+
+do_reset
+
+echo 0 > events/enable
+count=`cat trace | grep -v ^# | wc -l`
+if [ $count -ne 0 ]; then
+    fail "any of events should not be recorded"
+fi
+
+do_reset
+
+exit 0
-- 
2.1.2

Re: [PATCH 1/3] ftracetest: Use logfile name supported by busybox's mktemp

[Masami Hiramatsu]

(2014/11/06 11:04), Namhyung Kim wrote:
> When I run the ftracetest in a busybox docker container, I saw
> following error.  Make the logfile template to comply with busybox's
> mktemp.  It also keep the logfiles under the logs directory.
> 
>   # /linux/tools/testing/selftests/ftrace/ftracetest
>   === Ftrace unit tests ===
>   mktemp: unrecognized option `--tmpdir=/linux/tools/testing/selftests/ftrace/logs/20141106-003624/'
>   BusyBox v1.22.1 (2014-05-22 23:22:11 UTC) multi-call binary.
> 
>   Usage: mktemp [-dt] [-p DIR] [TEMPLATE]
> 
>   Create a temporary file with name based on TEMPLATE and print its name.
>   TEMPLATE must end with XXXXXX (e.g. [/dir/]nameXXXXXX).
>   Without TEMPLATE, -t tmp.XXXXXX is assumed.
> 
>   	-d	  Make directory, not file
>   	-q	  Fail silently on errors
>   	-t	  Prepend base directory name to TEMPLATE
>   	-p DIR	  Use DIR as a base directory (implies -t)
>   	-u Do not create anything; print a name
> 
>   Base directory is: -p DIR, else $TMPDIR, else /tmp

Oops! good catch :)

> 
>   [1] Basic trace file check/linux/tools/testing/selftests/ftrace/ftracetest: line 244: can't create : nonexistent directory
>   /linux/tools/testing/selftests/ftrace/ftracetest: line 244: can't create : nonexistent directory
> 						  [FAIL]
> 
> Signed-off-by: Namhyung Kim <namhyung@kernel.org>

Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>

Thank you,


> ---
>  tools/testing/selftests/ftrace/ftracetest | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tools/testing/selftests/ftrace/ftracetest b/tools/testing/selftests/ftrace/ftracetest
> index 8cc01c14262f..93b1bf5eadb5 100755
> --- a/tools/testing/selftests/ftrace/ftracetest
> +++ b/tools/testing/selftests/ftrace/ftracetest
> @@ -218,7 +218,7 @@ trap 'SIG_RESULT=$XFAIL' $SIG_XFAIL
>  # Run one test case
>  run_test() { # testfile
>    local testname=`basename $1`
> -  local testlog=`mktemp --tmpdir=$LOG_DIR ${testname}-XXXXXX.log`
> +  local testlog=`mktemp $LOG_DIR/${testname}-log.XXXXXX`
>    testcase $1
>    echo "execute: "$1 > $testlog
>    SIG_RESULT=0
> 


-- 
Masami HIRAMATSU
Software Platform Research Dept. Linux Technology Research Center
Hitachi, Ltd., Yokohama Research Laboratory
E-mail: masami.hiramatsu.pt@hitachi.com

Re: [PATCH 2/3] ftracetest: Clear trace buffer after running kprobe testcases

[Masami Hiramatsu]

(2014/11/06 11:04), Namhyung Kim wrote:
> 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
> 
> Signed-off-by: Namhyung Kim <namhyung@kernel.org>

Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>

Thank you!

> ---
>  tools/testing/selftests/ftrace/test.d/kprobe/add_and_remove.tc | 1 +
>  tools/testing/selftests/ftrace/test.d/kprobe/busy_check.tc     | 1 +
>  tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args.tc    | 1 +
>  tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_args.tc | 1 +
>  4 files changed, 4 insertions(+)
> 
> diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/add_and_remove.tc b/tools/testing/selftests/ftrace/test.d/kprobe/add_and_remove.tc
> index 1b8b665ab2b3..a5a426211129 100644
> --- a/tools/testing/selftests/ftrace/test.d/kprobe/add_and_remove.tc
> +++ b/tools/testing/selftests/ftrace/test.d/kprobe/add_and_remove.tc
> @@ -9,3 +9,4 @@ echo p:myevent do_fork > kprobe_events
>  grep myevent kprobe_events
>  test -d events/kprobes/myevent
>  echo > kprobe_events
> +clear_trace
> diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/busy_check.tc b/tools/testing/selftests/ftrace/test.d/kprobe/busy_check.tc
> index b55c84003587..d8c7bb6581fe 100644
> --- a/tools/testing/selftests/ftrace/test.d/kprobe/busy_check.tc
> +++ b/tools/testing/selftests/ftrace/test.d/kprobe/busy_check.tc
> @@ -11,3 +11,4 @@ echo 1 > events/kprobes/myevent/enable
>  echo > kprobe_events && exit 1 # this must fail
>  echo 0 > events/kprobes/myevent/enable
>  echo > kprobe_events # this must succeed
> +clear_trace
> diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args.tc
> index a603d3f8db7b..c45ee2761354 100644
> --- a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args.tc
> +++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args.tc
> @@ -12,5 +12,6 @@ echo 1 > events/kprobes/testprobe/enable
>  ( echo "forked")
>  echo 0 > events/kprobes/testprobe/enable
>  echo "-:testprobe" >> kprobe_events
> +clear_trace
>  test -d events/kprobes/testprobe && exit 1 || exit 0
>  
> diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_args.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_args.tc
> index 283c29e7f7c4..31717985acc7 100644
> --- a/tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_args.tc
> +++ b/tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_args.tc
> @@ -12,4 +12,5 @@ echo 1 > events/kprobes/testprobe2/enable
>  ( echo "forked")
>  echo 0 > events/kprobes/testprobe2/enable
>  echo '-:testprobe2' >> kprobe_events
> +clear_trace
>  test -d events/kprobes/testprobe2 && exit 1 || exit 0
> 


-- 
Masami HIRAMATSU
Software Platform Research Dept. Linux Technology Research Center
Hitachi, Ltd., Yokohama Research Laboratory
E-mail: masami.hiramatsu.pt@hitachi.com

Re: [PATCH 3/3] ftracetest: Add basic event tracing test cases

[Masami Hiramatsu]

(2014/11/06 11:04), Namhyung Kim wrote:
> 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

Nice :)

> 
> Signed-off-by: Namhyung Kim <namhyung@kernel.org>

Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>

Thank you,

> ---
>  .../selftests/ftrace/test.d/00basic/basic4.tc      |  5 ++
>  .../selftests/ftrace/test.d/event/event-enable.tc  | 53 ++++++++++++++++++++++
>  .../ftrace/test.d/event/subsystem-enable.tc        | 53 ++++++++++++++++++++++
>  .../ftrace/test.d/event/toplevel-enable.tc         | 47 +++++++++++++++++++
>  4 files changed, 158 insertions(+)
>  create mode 100644 tools/testing/selftests/ftrace/test.d/00basic/basic4.tc
>  create mode 100644 tools/testing/selftests/ftrace/test.d/event/event-enable.tc
>  create mode 100644 tools/testing/selftests/ftrace/test.d/event/subsystem-enable.tc
>  create mode 100644 tools/testing/selftests/ftrace/test.d/event/toplevel-enable.tc
> 
> diff --git a/tools/testing/selftests/ftrace/test.d/00basic/basic4.tc b/tools/testing/selftests/ftrace/test.d/00basic/basic4.tc
> new file mode 100644
> index 000000000000..fd9c49a13612
> --- /dev/null
> +++ b/tools/testing/selftests/ftrace/test.d/00basic/basic4.tc
> @@ -0,0 +1,5 @@
> +#!/bin/sh
> +# description: Basic event tracing check
> +test -f available_events -a -f set_event -a -d events
> +# check scheduler events are available
> +grep -q sched available_events && exit 0 || exit -1
> \ No newline at end of file
> diff --git a/tools/testing/selftests/ftrace/test.d/event/event-enable.tc b/tools/testing/selftests/ftrace/test.d/event/event-enable.tc
> new file mode 100644
> index 000000000000..668616d9bb03
> --- /dev/null
> +++ b/tools/testing/selftests/ftrace/test.d/event/event-enable.tc
> @@ -0,0 +1,53 @@
> +#!/bin/sh
> +# description: event tracing - enable/disable with event level files
> +
> +do_reset() {
> +    echo > set_event
> +    clear_trace
> +}
> +
> +fail() { #msg
> +    do_reset
> +    echo $1
> +    exit -1
> +}
> +
> +if [ ! -f set_event -o ! -d events/sched ]; then
> +    echo "event tracing is not supported"
> +    exit_unsupported
> +fi
> +
> +reset_tracer
> +do_reset
> +
> +echo 'sched:sched_switch' > set_event
> +usleep 1
> +
> +count=`cat trace | grep sched_switch | wc -l`
> +if [ $count -eq 0 ]; then
> +    fail "sched_switch events are not recorded"
> +fi
> +
> +do_reset
> +
> +echo 1 > events/sched/sched_switch/enable
> +usleep 1
> +
> +count=`cat trace | grep sched_switch | wc -l`
> +if [ $count -eq 0 ]; then
> +    fail "sched_switch events are not recorded"
> +fi
> +
> +do_reset
> +
> +echo 0 > events/sched/sched_switch/enable
> +usleep 1
> +
> +count=`cat trace | grep sched_switch | wc -l`
> +if [ $count -ne 0 ]; then
> +    fail "sched_switch events should not be recorded"
> +fi
> +
> +do_reset
> +
> +exit 0
> diff --git a/tools/testing/selftests/ftrace/test.d/event/subsystem-enable.tc b/tools/testing/selftests/ftrace/test.d/event/subsystem-enable.tc
> new file mode 100644
> index 000000000000..655c415b6e7f
> --- /dev/null
> +++ b/tools/testing/selftests/ftrace/test.d/event/subsystem-enable.tc
> @@ -0,0 +1,53 @@
> +#!/bin/sh
> +# description: event tracing - enable/disable with subsystem level files
> +
> +do_reset() {
> +    echo > set_event
> +    clear_trace
> +}
> +
> +fail() { #msg
> +    do_reset
> +    echo $1
> +    exit -1
> +}
> +
> +if [ ! -f set_event -o ! -d events/sched ]; then
> +    echo "event tracing is not supported"
> +    exit_unsupported
> +fi
> +
> +reset_tracer
> +do_reset
> +
> +echo 'sched:*' > set_event
> +usleep 1
> +
> +count=`cat trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l`
> +if [ $count -lt 3 ]; then
> +    fail "at least fork, exec and exit events should be recorded"
> +fi
> +
> +do_reset
> +
> +echo 1 > events/sched/enable
> +usleep 1
> +
> +count=`cat trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l`
> +if [ $count -lt 3 ]; then
> +    fail "at least fork, exec and exit events should be recorded"
> +fi
> +
> +do_reset
> +
> +echo 0 > events/sched/enable
> +usleep 1
> +
> +count=`cat trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l`
> +if [ $count -ne 0 ]; then
> +    fail "any of scheduler events should not be recorded"
> +fi
> +
> +do_reset
> +
> +exit 0
> diff --git a/tools/testing/selftests/ftrace/test.d/event/toplevel-enable.tc b/tools/testing/selftests/ftrace/test.d/event/toplevel-enable.tc
> new file mode 100644
> index 000000000000..480845774007
> --- /dev/null
> +++ b/tools/testing/selftests/ftrace/test.d/event/toplevel-enable.tc
> @@ -0,0 +1,47 @@
> +#!/bin/sh
> +# description: event tracing - enable/disable with top level files
> +
> +do_reset() {
> +    echo > set_event
> +    clear_trace
> +}
> +
> +fail() { #msg
> +    do_reset
> +    echo $1
> +    exit -1
> +}
> +
> +if [ ! -f available_events -o ! -f set_event -o ! -d events ]; then
> +    echo "event tracing is not supported"
> +    exit_unsupported
> +fi
> +
> +reset_tracer
> +do_reset
> +
> +echo '*:*' > set_event
> +count=`cat trace | grep -v ^# | wc -l`
> +if [ $count -eq 0 ]; then
> +    fail "none of events are recorded"
> +fi
> +
> +do_reset
> +
> +echo 1 > events/enable
> +count=`cat trace | grep -v ^# | wc -l`
> +if [ $count -eq 0 ]; then
> +    fail "none of events are recorded"
> +fi
> +
> +do_reset
> +
> +echo 0 > events/enable
> +count=`cat trace | grep -v ^# | wc -l`
> +if [ $count -ne 0 ]; then
> +    fail "any of events should not be recorded"
> +fi
> +
> +do_reset
> +
> +exit 0
> 


-- 
Masami HIRAMATSU
Software Platform Research Dept. Linux Technology Research Center
Hitachi, Ltd., Yokohama Research Laboratory
E-mail: masami.hiramatsu.pt@hitachi.com

Re: [PATCH 1/3] ftracetest: Use logfile name supported by busybox's mktemp

[Steven Rostedt]

On Thu, 06 Nov 2014 12:12:22 +0900
 
> > 
> >   [1] Basic trace file check/linux/tools/testing/selftests/ftrace/ftracetest: line 244: can't create : nonexistent directory
> >   /linux/tools/testing/selftests/ftrace/ftracetest: line 244: can't create : nonexistent directory
> > 						  [FAIL]
> > 
> > Signed-off-by: Namhyung Kim <namhyung@kernel.org>
> 
> Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>

I pulled all three in.

Thanks Namhyung!

-- Steve