linux-kernel - Re: [PATCH tip/core/rcu] classic RCU locking and memory-barrier cleanups

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Message-ID: <48AAA501.8010502@colorfullife.com>
Date:	Tue, 19 Aug 2008 12:48:33 +0200
From:	Manfred Spraul <manfred@...orfullife.com>
To:	paulmck@...ux.vnet.ibm.com
CC:	linux-kernel@...r.kernel.org, mingo@...e.hu,
	akpm@...ux-foundation.org, oleg@...sign.ru, dipankar@...ibm.com,
	rostedt@...dmis.org, dvhltc@...ibm.com, niv@...ibm.com
Subject: Re: [PATCH tip/core/rcu] classic RCU locking and memory-barrier cleanups

Hi Paul,

You are beating me: I've just finished a my implementation, it's attached.
It boots with qemu, rcu torture enabled, both single and 8-cpu.

Two problems are open:
- right now, I don't use rcu_qsctr_inc() at all.
- qlowmark is set to 0, any other value breaks synchronize_rcu().

And I must read your implementation....

--
    Manfred

View attachment "rcuclassic.c" of type "text/plain" (18378 bytes)

View attachment "rcuclassic.h" of type "text/plain" (5397 bytes)