Linux Input Archive on lore.kernel.org
 help / color / Atom feed
From: "Stéphane Chatty" <chatty@enac.fr>
To: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: ynezz@true.cz, linux-input@vger.kernel.org
Subject: Re: [PATCH] Support for 3M multitouch panel
Date: Tue, 22 Dec 2009 20:27:39 +0100
Message-ID: <48B39262-E923-4047-8DC4-5E21E666887D@enac.fr> (raw)
In-Reply-To: <20091222185628.GA28392@core.coreip.homeip.net>


Le 22 déc. 09 à 19:56, Dmitry Torokhov a écrit :
>
> I meant "read-modify-write" is worse.
>
> To modify a bitfiled the processor has to fetch data from memory (or
> cache if it is in cache) perform a logical operation on it, and store
> it back in teh memory. With boolean occupying 1 byte, on most
> architectures (older alphas is one exception I know of) var=true  
> can be
> done by simple store, no need for "read-modify" part.

OK. I had not realized this. My processor architecture courses were  
too long ago.

St.

--
To unsubscribe from this list: send the line "unsubscribe linux-input" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

  reply index

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-12-11 10:12 Stephane Chatty
2009-12-11 12:42 ` Petr Štetiar
2009-12-11 14:10   ` Fwd: " Stephane Chatty
2009-12-11 22:36     ` Dmitry Torokhov
2009-12-12  8:13       ` Stéphane Chatty
2009-12-12  8:30         ` Dmitry Torokhov
2009-12-22 18:00       ` Stéphane Chatty
2009-12-22 18:56         ` Dmitry Torokhov
2009-12-22 19:27           ` Stéphane Chatty [this message]
2009-12-22 22:04           ` Stephane Chatty
2009-12-23  0:22             ` Jiri Kosina
2009-12-23  0:33             ` Jiri Kosina
2009-12-23  9:47               ` Stéphane Chatty

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=48B39262-E923-4047-8DC4-5E21E666887D@enac.fr \
    --to=chatty@enac.fr \
    --cc=dmitry.torokhov@gmail.com \
    --cc=linux-input@vger.kernel.org \
    --cc=ynezz@true.cz \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux Input Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-input/0 linux-input/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-input linux-input/ https://lore.kernel.org/linux-input \
		linux-input@vger.kernel.org
	public-inbox-index linux-input

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-input


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git