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Date: Fri, 30 Aug 2013 09:52:18 -0700
Message-ID: <CA+55aFxwjx30pC=kcfvOzgJvt2KK9DLm2i6JKYYz+mtOOJEnMA@mail.gmail.com>
Subject: Re: [PATCH v7 1/4] spinlock: A new lockref structure for lockless
 update of refcount
From: Linus Torvalds <torvalds@linux-foundation.org>
To: Sedat Dilek <sedat.dilek@gmail.com>
Cc: Waiman Long <waiman.long@hp.com>, Ingo Molnar <mingo@kernel.org>,
        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>,
        Peter Zijlstra <peterz@infradead.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 9:37 AM, Sedat Dilek <sedat.dilek@gmail.com> wrote:
>
> Where is this a.out file from or how to generate it?

Oh, that's just the silly threaded test-binary. I don't know what you
called it.

As to your config options, yesh, you have some expensive stuff.
DEBUG_OBJECTS and DEBUG_MUTEXES in particular tend to cause lots of
horrible performance issues. I didn't check if there might be other
things..

                Linusc
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