Date: Sun, 28 Oct 2012 22:20:20 +0100 From: Andre Oppermann <andre@freebsd.org> To: attilio@FreeBSD.org Cc: mdf@freebsd.org, src-committers@freebsd.org, John Baldwin <jhb@freebsd.org>, svn-src-user@freebsd.org, Jeff Roberson <jroberson@jroberson.net>, Bruce Evans <brde@optusnet.com.au> Subject: Re: svn commit: r241889 - in user/andre/tcp_workqueue/sys: arm/arm cddl/compat/opensolaris/kern cddl/contrib/opensolaris/uts/common/dtrace cddl/contrib/opensolaris/uts/common/fs/zfs ddb dev/acpica dev/... Message-ID: <508DA194.6060807@freebsd.org> In-Reply-To: <CAJ-FndD40whTV=o1P8gMCaq9tKEtRg56xMKdjqnapVR6Awo7og@mail.gmail.com> References: <201210221418.q9MEINkr026751@svn.freebsd.org> <201210241136.06154.jhb@freebsd.org> <CAJ-FndAG-Qp%2B1aQvoL7YRj=R151Qe9_wNrUeOAaDsdYao_-zCQ@mail.gmail.com> <201210241414.30723.jhb@freebsd.org> <CAJ-FndAu6BGeMMbtFTLaSqy82mbhM9CVEyJ3Lb1WhAogJr59yA@mail.gmail.com> <CAJ-FndBqRpkBhCntd2aqwVYPu%2B2EHGeuXr5srLtrNNDK-ButxA@mail.gmail.com> <508965B3.2020705@freebsd.org> <CAJ-FndCMMH2Qy=rzzxagNVfgO9vF0xZY6B_vrnjmv_dXKNB5Dg@mail.gmail.com> <5089A913.2040603@freebsd.org> <CAJ-FndApwOo8xmZQyeqq0bGp8P13QWRqgmSDNg1_hbm7nrpOAQ@mail.gmail.com> <508A89EF.5070805@freebsd.org> <CAJ-FndC%2BujncG54_RMwKwdtvNCRJ2QojNuADWn59puwayCHs6A@mail.gmail.com> <CAJ-FndAhYk4R2AD3COmkOv3vYQganGXQKuO%2BkMQLaefTQSAejQ@mail.gmail.com> <CAJ-FndD40whTV=o1P8gMCaq9tKEtRg56xMKdjqnapVR6Awo7og@mail.gmail.com>
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On 28.10.2012 18:42, Attilio Rao wrote: > On Sat, Oct 27, 2012 at 5:27 PM, Attilio Rao <attilio@freebsd.org> wrote: >> Here we go with further comments tweaks. >> Also, in order to make it a complete NOP from KPI perspective I had to >> change the way the mtx_assert() wrapper was implemented as in v1 it >> wasn't correctly handling the const qualifier. >> I think the result is better now and you should refer to this patch for reviews: >> http://www.freebsd.org/~attilio/mtx_decoupled2.patch Thank you for the updated patch. If the others more versed in this area are happy with it I'm not objecting. > BTW, the mtx_sysuninit() introduction can be avoided by using this other trick: > #define MTX_SYSINIT(name, mtx, desc, opts) \ > static struct mtx_args name##_args = { \ > (mtx), \ > (desc), \ > (opts) \ > }; \ > SYSINIT(name##_mtx_sysinit, SI_SUB_LOCK, SI_ORDER_MIDDLE, \ > mtx_sysinit, &name##_args); \ > SYSUNINIT(name##_mtx_sysuninit, SI_SUB_LOCK, SI_ORDER_MIDDLE, \ > _mtx_destroy, __DEVOLATILE(void *, &(mtx)->mtx_lock)) > > I'm just not sure that I would like the use of __DEVOLATILE() even if > it would help in this case when introducing MTX_SYSINIT_UNSHARE() > because we will just need to reuse the same code. I'm not really happy about the _unshare naming. Something like _aligned or _cachline would be much more obvious on what it does. > Also, the more I think about this the more I feel convinced that > mtxlock2mtx() should be static in kern_mutex.c. I can simply add a > note to _mutex.h as a reminder for it. Agreed. -- Andre
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