From: "David C. Hansen" <haveblue@us.ibm.com>
To: Robert Love <rml@tech9.net>
Cc: Alex Khripin <akhripin@mit.edu>, linux-kernel@vger.kernel.org
Subject: Re: BKL in tty code?
Date: Wed, 30 Jan 2002 13:10:13 -0800 [thread overview]
Message-ID: <3C586135.2020304@us.ibm.com> (raw)
In-Reply-To: <20020130184950.GA22442@morgoth.mit.edu> <1012418760.3219.43.camel@phantasy>
Robert Love wrote:
>On Wed, 2002-01-30 at 13:49, Alex Khripin wrote:
>
>>I'm very much a newbie, and I'm wondering about the big kernel locks
>>in tty_io.c. What exactly are the locks in the read and write for? Is the
>>tty device that contested? Couldn't a finer grained lock be used?
>>
>There is probably some cleanup that is possible, but really getting the
>thing in gear (which means no BKL, which is probably the hardest part to
>rip out) require some level of rewrite.
>
People working on BKL removal tend to ignore these types of things (I
know I do). We concentrate on scalability and performance and the tty
code isn't exactly a high point of lock contention.
next prev parent reply other threads:[~2002-01-30 21:10 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-01-30 18:49 BKL in tty code? Alex Khripin
2002-01-30 19:25 ` Robert Love
2002-01-30 21:01 ` Russell King
2002-01-30 22:58 ` James Simmons
2002-01-30 23:05 ` Russell King
2002-01-30 22:52 ` Karl
2002-01-30 23:14 ` James Simmons
2002-01-30 21:10 ` David C. Hansen [this message]
2002-01-30 21:57 ` Karl
2002-01-30 23:00 ` James Simmons
2002-01-30 22:57 ` James Simmons
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