From: Ingo Molnar <mingo@elte.hu>
To: lkml <linux-kernel@vger.kernel.org>
Cc: Linus Torvalds <torvalds@osdl.org>, Andrew Morton <akpm@osdl.org>,
Arjan van de Ven <arjanv@infradead.org>,
Nicolas Pitre <nico@cam.org>,
Jes Sorensen <jes@trained-monkey.org>,
Zwane Mwaikambo <zwane@arm.linux.org.uk>,
Oleg Nesterov <oleg@tv-sign.ru>,
David Howells <dhowells@redhat.com>,
Alan Cox <alan@lxorguk.ukuu.org.uk>,
Benjamin LaHaise <bcrl@kvack.org>,
Steven Rostedt <rostedt@goodmis.org>,
Christoph Hellwig <hch@infradead.org>, Andi Kleen <ak@suse.de>,
Russell King <rmk+lkml@arm.linux.org.uk>
Subject: [patch 0/9] mutex subsystem, -V4
Date: Thu, 22 Dec 2005 12:41:47 +0100 [thread overview]
Message-ID: <20051222114147.GA18878@elte.hu> (raw)
this is the -V4 of the mutex subsystem patch-queue. It consists of the
following patches:
add-atomic-xchg.patch
add-atomic-call-func-i386.patch
add-atomic-call-func-x86_64.patch
add-atomic-call-wrappers-rest.patch
mutex-core.patch
mutex-switch-arm-to-xchg.patch
mutex-debug.patch
mutex-debug-more.patch
xfs-mutex-namespace-collision-fix.patch
the patches are against Linus' latest GIT tree, and they should work
fine on every Linux architecture.
Changes since -V3:
- imlemented an atomic_xchg() based mutex implementation. It integrated
pretty nicely into the generic code, and most of the code is still
shared.
- added __ARCH_WANT_XCHG_BASED_ATOMICS: if an architecture defines
this then the generic mutex code will switch to the atomic_xchg()
implementation.
This should be conceptually equivalent to the variant Nicolas Pitre
posted - Nicolas, could you check out this one? It's much easier to
provide this in the generic implementation, and the code ends up
looking cleaner.
- eliminated ARCH_IMPLEMENTS_MUTEX_FASTPATH: there's no need for
architectures to override the generic code anymore, with the
introduction of __ARCH_WANT_XCHG_BASED_ATOMICS.
- ARM: enable __ARCH_WANT_XCHG_BASED_ATOMICS.
- ARM buildfix: move the new atomic primitives to the correct place.
(Nicolas Pitre)
- optimization: unlock the mutex outside of the spinlock (suggested by
Nicolas Pitre)
- removed leftover arch_semaphore reference from the XFS patch. (noticed
by Arjan van de Ven)
- better document the fact that mutex_trylock() follows spin_trylock()
semantics, not sem_trylock() semantics.
- cleanup: got rid of the MUTEX_LOCKLESS_FASTPATH define. (in -V3 this
became equivalent to DEBUG_MUTEXES, via the elimination of the
__HAVE_ARCH_CMPXCHG dependency on the fastpath.)
- further simplified and unified mutex_trylock().
- DocBook entries, and more documentation of internals.
- dropped the spinlock-debug fix, Linus merged it.
Ingo
next reply other threads:[~2005-12-22 11:42 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-12-22 11:41 Ingo Molnar [this message]
2005-12-22 11:53 ` [patch 0/9] mutex subsystem, -V4 Christoph Hellwig
2005-12-22 12:45 ` Ingo Molnar
2005-12-22 15:34 ` Nicolas Pitre
2005-12-22 15:40 ` Ingo Molnar
2005-12-22 16:32 ` Nicolas Pitre
2005-12-22 16:44 ` Ingo Molnar
2005-12-22 16:58 ` Russell King
2005-12-22 21:04 ` Ingo Molnar
2005-12-22 21:26 ` Russell King
2005-12-22 21:27 ` Nicolas Pitre
2005-12-22 21:37 ` [patch 1/2] mutex subsystem: basic per arch fast path primitives Nicolas Pitre
2005-12-22 21:53 ` Christoph Hellwig
2005-12-22 21:40 ` [patch 2/2] mutex subsystem: use the per architecture fast path lock_unlock defines Nicolas Pitre
2005-12-22 21:54 ` [patch 0/9] mutex subsystem, -V4 Ingo Molnar
2005-12-22 16:58 ` Nicolas Pitre
2005-12-22 17:20 ` Christoph Hellwig
2005-12-22 17:33 ` Steven Rostedt
2005-12-22 18:24 ` Nicolas Pitre
2005-12-22 11:54 ` Andrew Morton
2005-12-22 12:20 ` Ingo Molnar
2005-12-22 13:07 ` Andrew Morton
2005-12-22 13:23 ` Arjan van de Ven
2005-12-22 13:44 ` Andrew Morton
2005-12-22 14:11 ` Alan Cox
2005-12-22 23:30 ` Andrew Morton
2005-12-22 23:34 ` Christoph Hellwig
[not found] ` <32801.10.10.10.28.1135295357.squirrel@linux1>
2005-12-22 23:49 ` Sean
2005-12-22 23:53 ` Randy.Dunlap
[not found] ` <50572.10.10.10.28.1135296023.squirrel@linux1>
2005-12-23 0:00 ` Sean
2005-12-23 0:00 ` Steven Rostedt
[not found] ` <20051222221311.2f6056ec.akpm@osdl.org>
2005-12-23 14:24 ` Nicolas Pitre
2005-12-23 14:51 ` Andrew Morton
2005-12-23 14:57 ` Russell King
2005-12-23 15:04 ` Xavier Bestel
2005-12-23 15:27 ` Andrew Morton
2005-12-23 15:00 ` Steven Rostedt
2006-01-03 17:54 ` Abhijit Bhopatkar
2005-12-25 16:08 ` Roman Zippel
2005-12-25 22:54 ` Ingo Molnar
2005-12-26 21:49 ` Roman Zippel
2005-12-25 23:04 ` Andrew Morton
2005-12-25 23:22 ` Ingo Molnar
2005-12-26 10:35 ` Andrew Morton
2005-12-26 10:42 ` Arjan van de Ven
2005-12-26 11:11 ` Andrew Morton
2005-12-26 17:15 ` Mike Galbraith
2005-12-26 17:44 ` Lee Revell
2005-12-27 0:32 ` David Lang
2005-12-26 18:15 ` Linus Torvalds
2005-12-27 14:42 ` Ingo Molnar
2005-12-27 23:02 ` Andrew Morton
2005-12-26 0:33 ` Moore's law (was Re: [patch 0/9] mutex subsystem, -V4) Pavel Machek
2006-01-05 15:30 ` Andi Kleen
2006-01-05 19:08 ` Pavel Machek
2005-12-26 15:29 ` [patch 0/9] mutex subsystem, -V4 Nicolas Pitre
2005-12-22 15:46 ` Thomas Gleixner
2005-12-22 17:40 ` Linus Torvalds
2005-12-22 20:09 ` Steven Rostedt
2005-12-22 17:17 ` Christoph Hellwig
2005-12-22 15:19 ` Nicolas Pitre
2005-12-22 21:43 ` Paul Mackerras
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=20051222114147.GA18878@elte.hu \
--to=mingo@elte.hu \
--cc=ak@suse.de \
--cc=akpm@osdl.org \
--cc=alan@lxorguk.ukuu.org.uk \
--cc=arjanv@infradead.org \
--cc=bcrl@kvack.org \
--cc=dhowells@redhat.com \
--cc=hch@infradead.org \
--cc=jes@trained-monkey.org \
--cc=linux-kernel@vger.kernel.org \
--cc=nico@cam.org \
--cc=oleg@tv-sign.ru \
--cc=rmk+lkml@arm.linux.org.uk \
--cc=rostedt@goodmis.org \
--cc=torvalds@osdl.org \
--cc=zwane@arm.linux.org.uk \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).