From: Masami Hiramatsu <masami.hiramatsu...@hitachi.com> Add a test for log2 modifier of hist trigger in hist_mod.tc. Here is the test result.
---- # ./ftracetest test.d/trigger/trigger-hist-mod.tc === Ftrace unit tests === [1] event trigger - test histogram modifiers [PASS] # of passed: 1 # 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/3f1ab735c06a50b1b40d3e96b8b6a3e5ea62fd86.1457029949.git.tom.zanu...@linux.intel.com Signed-off-by: Masami Hiramatsu <masami.hiramatsu...@hitachi.com> Cc: Ingo Molnar <mi...@redhat.com> Cc: Shuah Khan <shua...@osg.samsung.com> Cc: Namhyung Kim <namhy...@kernel.org> Cc: Tom Zanussi <tom.zanu...@linux.intel.com> Tested-by: Tom Zanussi <tom.zanu...@linux.intel.com> Signed-off-by: Steven Rostedt <rost...@goodmis.org> --- .../selftests/ftrace/test.d/trigger/trigger-hist-mod.tc | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/tools/testing/selftests/ftrace/test.d/trigger/trigger-hist-mod.tc b/tools/testing/selftests/ftrace/test.d/trigger/trigger-hist-mod.tc index 57e350a0bcca..c2b61c4fda11 100644 --- a/tools/testing/selftests/ftrace/test.d/trigger/trigger-hist-mod.tc +++ b/tools/testing/selftests/ftrace/test.d/trigger/trigger-hist-mod.tc @@ -60,6 +60,16 @@ for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done grep "id: sys_" events/raw_syscalls/sys_exit/hist > /dev/null || \ fail "syscall modifier on raw_syscalls/sys_exit did not work" + +reset_trigger + +echo "Test histgram with log2 modifier" + +echo 'hist:keys=bytes_req.log2' > events/kmem/kmalloc/trigger +for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done +grep 'bytes_req: ~ 2^[0-9]*' events/kmem/kmalloc/hist > /dev/null || \ + fail "log2 modifier on kmem/kmalloc did not work" + do_reset exit 0 -- 2.8.0.rc3
