2006-01-03 16:46:06

by Ingo Molnar

Subject: [patch 00/19] mutex subsystem, -V12

this is version -V12 of the generic mutex subsystem, against v2.6.15.
It consists of the following 19 patches:

add-atomic-xchg.patch
add-function-typecheck.patch

mutex-generic-asm-implementations.patch
mutex-asm-mutex.h-i386.patch
mutex-asm-mutex.h-x86_64.patch
mutex-asm-mutex.h-arm.patch
mutex-arch-mutex-h.patch
mutex-core.patch

mutex-docs.patch
mutex-debug.patch
mutex-debug-more.patch

sem2mutex-xfs.patch
sem2mutex-vfs-i-sem.patch
sem2mutex-vfs-i-sem-more.patch
sem2mutex-simple-ones.patch

sem2completion-sx8.patch
sem2completion-cpu5wdt.patch
sem2completion-ide-gendev.patch
sem2completion-loop.patch

the patches should work fine on every Linux architecture. They can also
be downloaded from:

http://redhat.com/~mingo/generic-mutex-subsystem/

Changes since -V11:

2 files changed, 50 insertions(+), 138 deletions(-)

- removed asm/semaphore.h from sx8.c (noticed by Nick Piggin)

- simplified the mutex locking slowpath, and merged the interruptible
and non-interruptible variants. This also fixes a small
queueing-fairness bug noticed by David Howells: tasks woken up by some
_other_ waitqueue might jump the wait-queue in the previous code, and
create unfairness. In this queueing variant we keep the task queued
all the time - if it retries it simply stays at the head of the queue.
This should also be more efficient. mutex.o got 10% smaller as well,
as the result of the unification of logic.

- cleanup: removed smaller inlined-once functions and merged them into
their usage sites.

Ingo

2006-01-03 20:14:04

by Cal Peake

Subject: Re: [patch 00/19] mutex subsystem, -V12

On Tue, 3 Jan 2006, Ingo Molnar wrote:

> this is version -V12 of the generic mutex subsystem, against v2.6.15.
> It consists of the following 19 patches:

Ingo,

Patches 13 and 15 seem to be getting lost in the ether (atleast for the
last two postings). Any ideas?

--
"Silly rabbit, kicks are for ribs!" -- Homer Simpson

2006-01-03 20:56:49

by Ingo Molnar

Subject: Re: [patch 00/19] mutex subsystem, -V12

* Cal Peake <[email protected]> wrote:

> On Tue, 3 Jan 2006, Ingo Molnar wrote:
>
> > this is version -V12 of the generic mutex subsystem, against v2.6.15.
> > It consists of the following 19 patches:
>
> Ingo,
>
> Patches 13 and 15 seem to be getting lost in the ether (atleast for
> the last two postings). Any ideas?

they are "too big" for lkml and hence eaten. You can find them at the
URL in the announcement.

Ingo