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Date: Fri, 22 Aug 2014 11:35:29 +0800
From: Fengguang Wu <fengguang.wu@intel.com>
To: Petr Mladek <pmladek@suse.cz>
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
        Tibor Billes <tbilles@gmx.com>, Josh Triplett <josh@joshtriplett.org>,
        Steven Rostedt <rostedt@goodmis.org>, Jiri Kosina <jkosina@suse.cz>,
        linux-kernel@vger.kernel.org, Wanlong Gao <gaowanlong@cn.fujitsu.com>
Subject: Re: rcu: Throttle rcu_try_advance_all_cbs() execution causes visible
 slowdown in ftrace switching
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Hi Petr,

Sorry for picking up this old thread, but I noticed your attached
ftrace test script and would like to ask for your permission to
include it in

        https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git

which is GPLv2. If you kindly agree, I'll run it actively for testing
the upstream linux kernels.

Thanks,
Fengguang

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Content-Type: application/x-shellscript; name=test-ftrace
Content-Disposition: attachment; filename=test-ftrace

#!/bin/bash

echo "Testing ftrace - begin"

cd /sys/kernel/debug/tracing

count=0
while test $count -lt 100 ; do
    for tracer in function nop ; do
        echo $tracer >current_tracer
        echo 1 >tracing_on
        echo 0 >tracing_on
    done
    count=$(($count + 1))
done

cd -

echo "Testing ftrace - end"




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