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Date: Fri, 30 Aug 2013 12:57:38 +0200
Message-ID: <CA+icZUXmt1oKSguM4iXfHBPFR6MWWWL8w=KC+_c8y212+ckFnw@mail.gmail.com>
Subject: Re: [PATCH v7 1/4] spinlock: A new lockref structure for lockless
 update of refcount
From: Sedat Dilek <sedat.dilek@gmail.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@kernel.org>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Waiman Long <waiman.long@hp.com>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        Alexander Viro <viro@zeniv.linux.org.uk>,
        Jeff Layton <jlayton@redhat.com>, Miklos Szeredi <mszeredi@suse.cz>,
        Ingo Molnar <mingo@redhat.com>, Thomas Gleixner <tglx@linutronix.de>,
        linux-fsdevel <linux-fsdevel@vger.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Steven Rostedt <rostedt@goodmis.org>, Andi Kleen <andi@firstfloor.org>,
        "Chandramouleeswaran, Aswin" <aswin@hp.com>,
        "Norton, Scott J" <scott.norton@hp.com>
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On Fri, Aug 30, 2013 at 12:52 PM, Peter Zijlstra <peterz@infradead.org> wrote:
> On Fri, Aug 30, 2013 at 12:44:29PM +0200, Sedat Dilek wrote:
>> Please, see advices in 'tools/Makefile':
>>
>>         @echo 'You can do:'
>>         @echo ' $$ make -C tools/ <tool>_install'
>>         @echo ''
>>         @echo '  from the kernel command line to build and install one of'
>>         @echo '  the tools above'
>>         @echo ''
>>         @echo '  $$ make tools/install'
>>         @echo ''
>>         @echo '  installs all tools.'
>
> I never follow advice :-) Muwhaha, also I'm generally not interested in
> 'all' tools anywya.
>
>> If you tell me where you discuss perf issues I can describe the problem.
>
> On this list, start a new thread CC ingo, acme and me. There's also an
> IRC channel but I keep forgetting what the official channel is and I'm
> likely not on it. I do tend to abuse irc.oftc.net/#linux-rt for it since
> most people are on there anyway.

Hi rebel :-)!

I was away from IRC for quite a year.
I will write some words...

- Sedat -

P.S.: It worked...

$ ~/src/linux-kernel/linux/tools/perf/perf --version
perf version 3.11.rc7.ga7370

$ ~/src/linux-kernel/linux/tools/perf/perf stat --null --repeat 5
./t_lockref_from-linus
Total loops: 2652351
Total loops: 2604876
Total loops: 2649696
Total loops: 2651417
Total loops: 2644068

 Performance counter stats for './t_lockref_from-linus' (5 runs):

      10,002926693 seconds time elapsed
          ( +-  0,00% )

$ cat /proc/version
Linux version 3.11.0-rc7-1-lockref-small
(sedat.dilek@gmail.com@fambox) (gcc version 4.6.3 (Ubuntu/Linaro
4.6.3-1ubuntu5) ) #1 SMP Fri Aug 30 10:23:19 CEST 2013
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