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Date:      Thu, 17 May 2018 12:35:02 -0700
From:      Matthew Macy <mmacy@freebsd.org>
To:        Pedro Giffuni <pfg@freebsd.org>
Cc:        Emmanuel Vadot <manu@bidouilliste.com>, src-committers@freebsd.org,  svn-src-all@freebsd.org, svn-src-head@freebsd.org
Subject:   Re: svn commit: r333745 - in head/sys/contrib/ck: include src
Message-ID:  <CAPrugNp77ysDN=0AQ4jji3Z_y85tUCVZoVO4hPZ3_1so=8LZ0Q@mail.gmail.com>
In-Reply-To: <11fb642a-d334-bd7d-be4f-b1aa181b8eb2@FreeBSD.org>
References:  <201805171814.w4HIEA0F079835@repo.freebsd.org> <20180517203856.aa6b8b241e23b9c07483232b@bidouilliste.com> <CAPrugNoX0n3TV90r0AARGSo16=gt2xOidsD17nxBHV1W_jbiuw@mail.gmail.com> <17058056-6b70-e918-dab8-63951d1bfbbd@FreeBSD.org> <20180517212757.84c7b02060ca8f86e56dbee9@bidouilliste.com> <11fb642a-d334-bd7d-be4f-b1aa181b8eb2@FreeBSD.org>

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On Thu, May 17, 2018 at 12:32 PM, Pedro Giffuni <pfg@freebsd.org> wrote:
>
>
> On 17/05/2018 14:27, Emmanuel Vadot wrote:
>>
>> On Thu, 17 May 2018 14:20:05 -0500
>> Pedro Giffuni <pfg@FreeBSD.org> wrote:
>>
>>> On 17/05/2018 14:12, Matthew Macy wrote:
>>>>
>>>> How do I avoid problems while allowing timely updates?
>>>>
>>>> -M
>>>>
>>>> On Thu, May 17, 2018 at 11:38 AM, Emmanuel Vadot <manu@bidouilliste.com>
>>>> wrote:
>>>>>
>>>>>    Hi Matt,
>>>>>
>>>>> On Thu, 17 May 2018 18:14:10 +0000 (UTC)
>>>>> Matt Macy <mmacy@FreeBSD.org> wrote:
>>>>>
>>>>>> Author: mmacy
>>>>>> Date: Thu May 17 18:14:10 2018
>>>>>> New Revision: 333745
>>>>>> URL: https://svnweb.freebsd.org/changeset/base/333745
>>>>>>
>>>>>> Log:
>>>>>>     ck: add support for executing callbacks outside of main poll loop
>>>>>>
>>>>>>     Pull in change from upstream
>>>>>> deca119d14bfffd440770eb67cbdbeaf7b57eb7b
>>>>>>
>>>>>>     |    ck_epoch: introduce ck_epoch_deferred
>>>>>>     |
>>>>>>     |    Allow for deferral to occur outside epoch poll critical loop
>>>>>> (which may access per-CPU structures).
>>>>>>     |
>>>>>>
>>>>>>     Approved by:        sbruno
>>>>>>
>>>>>> Modified:
>>>>>>     head/sys/contrib/ck/include/ck_epoch.h
>>>>>>     head/sys/contrib/ck/src/ck_epoch.c
>>>>>>
>>>>>    CK was imported in vendor-sys/ck, commiting directly into head will
>>>>> cause some problems in the future.
>>>
>>> Actually ... committing to head is fine: some things just have to be
>>> fixed.
>>
>>   This is not true, it can cause a lot of problems with futures updates
>> if the change isn't in the vendor repo.
>
> OK ... I meant generally you can. The catch here is that the change was
> already upstream so it should have been done in the vendor area and then
> merged. It's best to fix this properly now.
>
> Sorry for misguiding.
>

I'm happy to comply - just point me at the fine manual.


-M



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