linux-kernel - [PATCH] kselftests/ftrace: Add a test for log2 modifier of hist trigger

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20160225091921.3192.21916.stgit@localhost.localdomain>
Date:	Thu, 25 Feb 2016 18:19:21 +0900
From:	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
To:	Tom Zanussi <tom.zanussi@...ux.intel.com>
Cc:	Namhyung Kim <namhyung@...nel.org>, Ingo Molnar <mingo@...hat.com>,
	Shuah Khan <shuahkh@....samsung.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	linux-kernel@...r.kernel.org
Subject: [PATCH] kselftests/ftrace: Add a test for log2 modifier of hist
 trigger

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
  ----

Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
Cc: Steven Rostedt <rostedt@...dmis.org>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Shuah Khan <shuahkh@....samsung.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Tom Zanussi <tom.zanussi@...ux.intel.com>
---

Hi Tom, here is the patch to add a test for log2 modifier on your branch.

Thanks,
---
 .../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 57e350a..c2b61c4 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