From: Josh Triplett <josh@joshtriplett.org>
To: Pieter Smith <pieter@boesman.nl>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
open list <linux-kernel@vger.kernel.org>,
Arnd Bergmann <arnd@arndb.de>
Subject: Re: [PATCH 51/56] drivers/char/mem: support compiling out splice
Date: Sun, 16 Nov 2014 10:20:07 -0800 [thread overview]
Message-ID: <20141116182007.GA5032@thin> (raw)
In-Reply-To: <CAPho-_LCj7bxJ2EvuZtBZXD1buH1V+nKEiobTJUATYmGYVRWcA@mail.gmail.com>
[Please don't top-post.]
On Sun, Nov 16, 2014 at 01:18:27PM +0100, Pieter Smith wrote:
> I had a look at the numbers (see below): For a tinyconfig kernel, savings
> outside fs/splice.c are negligible. With the addition of networking
> however, net/core and net/ipv4 can be squeezed for usable savings.
>
> Should I leave networking (and the rest) until we can come up with a
> non-icky approach outside fs/splice.c?
>
> *THE NUMBERS*
>
> Given a tinyconfig, fs/splice.c can free up 8.2K (3.5K + 4.7K) with
> CONFIG_SYSCALL_SPLICE. The rest are not worth the effort:
> fs/splice:
> syscalls only: add/remove: 0/16 grow/shrink: 2/5 up/down: 114/-3693
> (-3579)
> the remainder: add/remove: 0/24 grow/shrink: 0/4 up/down: 0/-4824
> (-4824)
Nice!
Go ahead and submit the patches for that portion, and the rest can wait
until we get compiler support for omitting structure fields.
- Josh Triplett
next prev parent reply other threads:[~2014-11-16 18:20 UTC|newest]
Thread overview: 87+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <pieter@boesman.nl>
[not found] ` <1415913813-362-1-git-send-email-pieter@boesman.nl>
2014-11-13 21:22 ` [PATCH 01/56] moved sendfile syscall to splice translation unit Pieter Smith
2014-11-13 21:22 ` [PATCH 02/56] moved kernel_write out of " Pieter Smith
[not found] ` <1415913813-362-1-git-send-email-pieter-qeJ+1H9vRZbz+pZb47iToQ@public.gmane.org>
2014-11-13 21:22 ` [PATCH 03/56] fs: Support compiling out splice-family syscalls Pieter Smith
2014-11-13 21:22 ` Pieter Smith
2014-11-13 21:22 ` Pieter Smith
2014-11-13 21:22 ` [PATCH 04/56] fs: Macros to define splice file_operations Pieter Smith
2014-11-13 21:49 ` Richard Weinberger
2014-11-13 22:24 ` josh
2014-11-13 21:51 ` Al Viro
2014-11-13 21:22 ` [PATCH 05/56] fs/lustre: support compiling out splice Pieter Smith
2014-11-13 22:09 ` Greg Kroah-Hartman
2014-11-13 21:22 ` [PATCH 06/56] fs/adfs: " Pieter Smith
2014-11-13 21:22 ` [PATCH 07/56] fs/affs: " Pieter Smith
2014-11-13 21:22 ` [PATCH 08/56] fs/afs: " Pieter Smith
2014-11-13 21:22 ` [PATCH 09/56] fs/bad_inode: " Pieter Smith
2014-11-13 21:22 ` [PATCH 10/56] fs/block_dev: " Pieter Smith
2014-11-13 21:22 ` [PATCH 11/56] fs/bfs: " Pieter Smith
2014-11-13 21:22 ` [PATCH 12/56] fs/btrfs: " Pieter Smith
2014-11-13 21:22 ` [PATCH 13/56] fs/ceph: " Pieter Smith
2014-11-13 21:22 ` Pieter Smith
2014-11-13 21:22 ` [PATCH 14/56] fs/cifs: " Pieter Smith
2014-11-13 21:22 ` [PATCH 15/56] fs/coda: " Pieter Smith
2014-11-13 21:22 ` [PATCH 16/56] fs/encryptfs: " Pieter Smith
2014-11-13 21:22 ` Pieter Smith
2014-11-13 21:22 ` [PATCH 17/56] fs/exofs: " Pieter Smith
2014-11-16 9:02 ` [osd-dev] " Boaz Harrosh
2014-11-13 21:22 ` [PATCH 18/56] fs/ext2: " Pieter Smith
2014-11-13 21:22 ` [PATCH 19/56] fs/ext3: " Pieter Smith
2014-11-13 21:22 ` [PATCH 20/56] fs/ext4: " Pieter Smith
2014-11-14 0:28 ` josh
2014-11-13 21:22 ` [PATCH 21/56] fs/f2fs: " Pieter Smith
2014-11-13 21:22 ` Pieter Smith
2014-11-13 21:22 ` [PATCH 22/56] fs/fat: " Pieter Smith
2014-11-13 21:23 ` [PATCH 23/56] fs/fuse: " Pieter Smith
2014-11-13 21:23 ` [Cluster-devel] [PATCH 24/56] fs/gfs2: " Pieter Smith
2014-11-13 21:23 ` Pieter Smith
2014-11-13 21:23 ` [PATCH 25/56] fs/hfs: " Pieter Smith
2014-11-13 21:23 ` [PATCH 26/56] fs/hfsplus: " Pieter Smith
2014-11-13 21:23 ` [PATCH 27/56] fs/hostfs: " Pieter Smith
2014-11-13 21:23 ` Pieter Smith
2014-11-13 21:23 ` [PATCH 28/56] fs/hpfs: " Pieter Smith
2014-11-13 21:23 ` [PATCH 29/56] fs/jffs2: " Pieter Smith
2014-11-13 21:23 ` Pieter Smith
2014-11-13 21:23 ` [PATCH 30/56] fs/jfs: " Pieter Smith
2014-11-13 21:23 ` [PATCH 31/56] fs/minix: " Pieter Smith
2014-11-13 21:23 ` [PATCH 32/56] fs/nfs: " Pieter Smith
2014-11-13 21:23 ` [PATCH 33/56] fs/nfsd: " Pieter Smith
2014-11-13 21:23 ` [PATCH 34/56] fs/nilfs2: " Pieter Smith
2014-11-13 21:23 ` Pieter Smith
2014-11-13 21:23 ` [PATCH 35/56] fs/ntfs: " Pieter Smith
2014-11-13 21:23 ` [Ocfs2-devel] [PATCH 36/56] fs/ocfs2: " Pieter Smith
2014-11-13 21:23 ` Pieter Smith
2014-11-13 21:23 ` [PATCH 37/56] fs/omfs: " Pieter Smith
2014-11-13 21:23 ` [PATCH 38/56] fs/ramfs: " Pieter Smith
2014-11-13 21:23 ` [PATCH 39/56] fs/reiserfs: " Pieter Smith
2014-11-13 21:23 ` Pieter Smith
2014-11-13 21:23 ` [PATCH 40/56] fs/romfs: " Pieter Smith
2014-11-13 21:23 ` [PATCH 41/56] fs/sysv: " Pieter Smith
2014-11-13 21:23 ` [PATCH 42/56] fs/ubifs: " Pieter Smith
2014-11-13 21:23 ` Pieter Smith
2014-11-13 21:23 ` [PATCH 43/56] fs/udf: " Pieter Smith
2014-11-13 21:23 ` [PATCH 44/56] fs/ufs: " Pieter Smith
2014-11-13 21:23 ` [PATCH 45/56] fs/xfs: " Pieter Smith
2014-11-13 21:23 ` [PATCH 46/56] kernel/relay: " Pieter Smith
2014-11-13 21:23 ` [PATCH 47/56] kenel/trace: " Pieter Smith
2014-11-17 20:33 ` Steven Rostedt
2014-11-13 21:23 ` [PATCH 48/56] mm/shmem: " Pieter Smith
2014-11-13 21:23 ` Pieter Smith
2014-11-13 21:23 ` [PATCH 49/56] net/socket: " Pieter Smith
2014-11-13 21:23 ` [PATCH 50/56] fs/read_write: " Pieter Smith
2014-11-13 21:23 ` [PATCH 51/56] drivers/char/mem: " Pieter Smith
2014-11-13 22:09 ` Greg Kroah-Hartman
[not found] ` <CAPho-_JJGy0cwBVfWKL1Gt9ZQZM+Odo7W05bKQ2JLO+TM-ABJA@mail.gmail.com>
2014-11-13 22:31 ` josh
2014-11-13 23:34 ` Greg Kroah-Hartman
2014-11-14 0:19 ` josh
2014-11-14 3:27 ` Greg Kroah-Hartman
[not found] ` <CAPho-_KUc-+c=X6xtLTD2F-o4qi+YpYdnw6F1cx4kniezfs7aw@mail.gmail.com>
2014-11-14 23:25 ` josh
[not found] ` <CAPho-_LCj7bxJ2EvuZtBZXD1buH1V+nKEiobTJUATYmGYVRWcA@mail.gmail.com>
2014-11-16 18:20 ` Josh Triplett [this message]
[not found] ` <CAPho-_+ZXHYGB9-d19NR9u5tcOpN1Ytg80NZgvScF=YQ-6SdNA@mail.gmail.com>
2014-11-18 22:42 ` josh
2014-11-13 21:23 ` [PATCH 52/56] drivers/char/virtio: " Pieter Smith
2014-11-13 21:23 ` Pieter Smith
2014-11-13 22:09 ` Greg Kroah-Hartman
2014-11-13 22:09 ` Greg Kroah-Hartman
2014-11-13 21:23 ` [PATCH 53/56] net/ipv6: " Pieter Smith
2014-11-13 21:23 ` [PATCH 54/56] net/ipv4: " Pieter Smith
2014-11-13 21:23 ` [PATCH 55/56] net/core: " Pieter Smith
2014-11-13 21:23 ` [PATCH 56/56] fs/splice: full support for " Pieter Smith
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=20141116182007.GA5032@thin \
--to=josh@joshtriplett.org \
--cc=arnd@arndb.de \
--cc=gregkh@linuxfoundation.org \
--cc=linux-kernel@vger.kernel.org \
--cc=pieter@boesman.nl \
/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
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.