From: Linus Torvalds <torvalds@linux-foundation.org>
To: "Theodore Ts'o" <tytso@mit.edu>,
Linus Torvalds <torvalds@linux-foundation.org>,
Matt Mackall <mpm@selenic.com>,
Linux Kernel Developers List <linux-kernel@vger.kernel.org>,
w@1wt.eu, ewust@umich.edu, zakir@umich.edu, greg@kroah.com,
nadiah@cs.ucsd.edu, jhalderm@umich.edu, tglx@linutronix.de,
davem@davemloft.net, stable@kernel.org
Subject: Re: [PATCH 01/10] random: make 'add_interrupt_randomness()' do something sane
Date: Thu, 5 Jul 2012 15:21:06 -0700 [thread overview]
Message-ID: <CA+55aFzFMZpiDMJO9UxoXSjOCzvxn7tgvmAHLM36OmaiMasQhw@mail.gmail.com> (raw)
In-Reply-To: <20120705220040.GA15685@thunk.org>
On Thu, Jul 5, 2012 at 3:00 PM, Theodore Ts'o <tytso@mit.edu> wrote:
>
> Like this?
Looks fine to me.
Although I think it might be better to stay closer to what we used to
do, and just 'or' in the action flags rather than make it some
conditional. And then at the end, do
if (!(flags & __IRQF_TIMER))
add_interrupt_randomness(irq)
instead on that or'ed flags value. Otherwise gcc will create silly
conditional moves (or worse still, conditional branches) just for that
"random" variable assignment.
Linus
next prev parent reply other threads:[~2012-07-05 22:21 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-05 18:12 [PATCH 00/10] /dev/random fixups Theodore Ts'o
2012-07-05 18:12 ` [PATCH 01/10] random: make 'add_interrupt_randomness()' do something sane Theodore Ts'o
2012-07-05 18:47 ` Matt Mackall
2012-07-05 18:52 ` Linus Torvalds
2012-07-05 21:39 ` Matt Mackall
2012-07-05 21:47 ` Linus Torvalds
2012-07-05 22:00 ` Theodore Ts'o
2012-07-05 22:21 ` Linus Torvalds [this message]
2012-07-05 22:31 ` Matt Mackall
2012-07-05 22:35 ` Linus Torvalds
2012-07-05 23:21 ` Theodore Ts'o
2012-07-06 2:59 ` Linus Torvalds
2012-07-06 13:01 ` Theodore Ts'o
2012-07-06 16:24 ` Linus Torvalds
2012-07-06 16:52 ` Theodore Ts'o
2012-07-09 19:15 ` Matt Mackall
2012-07-25 18:43 ` Thomas Gleixner
[not found] ` <CAGsuqq2MWuFnY7PMb_2ddBNNJr80xB_JW+Wryq3mhhmQuEojpg@mail.gmail.com>
2012-07-06 21:59 ` Theodore Ts'o
2012-07-05 18:12 ` [PATCH 02/10] random: use lockless techniques when mixing entropy pools Theodore Ts'o
2012-07-05 18:18 ` Linus Torvalds
2012-07-05 18:19 ` Greg KH
2012-07-05 23:09 ` Theodore Ts'o
2012-07-05 19:10 ` Matt Mackall
2012-07-05 19:47 ` Theodore Ts'o
2012-07-05 20:45 ` Matt Mackall
2012-07-05 18:12 ` [PATCH 03/10] random: create add_device_randomness() interface Theodore Ts'o
2012-07-05 18:12 ` [PATCH 04/10] usb: feed USB device information to the /dev/random driver Theodore Ts'o
2012-07-05 18:12 ` [PATCH 05/10] net: feed /dev/random with the MAC address when registering a device Theodore Ts'o
2012-07-05 18:12 ` [PATCH 06/10] random: use the arch-specific rng in xfer_secondary_pool Theodore Ts'o
2012-07-05 18:49 ` Linus Torvalds
2012-07-05 18:12 ` [PATCH 07/10] random: add new get_random_bytes_arch() function Theodore Ts'o
2012-07-05 18:35 ` Linus Torvalds
2012-07-05 19:50 ` Theodore Ts'o
2012-07-05 21:45 ` Matt Mackall
2012-07-25 3:37 ` H. Peter Anvin
2012-07-25 7:22 ` Ingo Molnar
2012-07-25 15:10 ` Theodore Ts'o
2012-07-25 15:19 ` H. Peter Anvin
2012-07-25 17:37 ` [PATCH] random: mix in architectural randomness in extract_buf() H. Peter Anvin
2012-07-25 23:50 ` Ben Hutchings
2012-07-26 0:32 ` H. Peter Anvin
2012-07-28 2:39 ` Theodore Ts'o
2012-07-28 2:48 ` H. Peter Anvin
2012-07-26 3:16 ` [PATCH 07/10] random: add new get_random_bytes_arch() function H. Peter Anvin
2012-07-26 3:24 ` H. Peter Anvin
2012-07-05 18:12 ` [PATCH 08/10] random: unify mix_pool_bytes() and mix_pool_bytes_entropy() Theodore Ts'o
2012-07-05 18:12 ` [PATCH 09/10] random: add tracepoints for easier debugging and verification Theodore Ts'o
2012-07-05 18:12 ` [PATCH 10/10] MAINTAINERS: Theodore Ts'o is taking over the random driver Theodore Ts'o
2012-07-06 11:40 ` [PATCH 00/10] /dev/random fixups Fengguang Wu
2012-07-06 12:44 ` Theodore Ts'o
2012-07-20 20:15 ` [PATCH] dmi: Feed DMI table to /dev/random driver Tony Luck
2012-07-20 21:03 ` Matt Mackall
2012-07-21 0:56 ` Theodore Ts'o
2012-07-21 1:19 ` Tony Luck
2012-07-21 2:02 ` Theodore Ts'o
2012-07-23 16:47 ` [PATCH] random: Add comment to random_initialize() Tony Luck
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