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Thu, 31 Oct 2024 12:22:31 -0700 (PDT) Received: from [192.168.1.128] ([38.175.170.29]) by smtp.gmail.com with ESMTPSA id 8926c6da1cb9f-4de04977a96sm399294173.110.2024.10.31.12.22.30 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 31 Oct 2024 12:22:30 -0700 (PDT) Message-ID: <3f71da6a-ab96-42c6-9c61-c73f2b6dceb0@linuxfoundation.org> Date: Thu, 31 Oct 2024 13:22:30 -0600 Precedence: bulk X-Mailing-List: ksummit@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: linus-next: improving functional testing for to-be-merged pull requests To: Thorsten Leemhuis , Mark Brown Cc: torvalds@linux-foundation.org, ksummit@lists.linux.dev, linux-kernel@vger.kernel.org, Sasha Levin , Shuah Khan References: <6dbbc85e-5a87-4605-8db6-92b191878d97@sirena.org.uk> Content-Language: en-US From: Shuah Khan In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 10/22/24 03:10, Thorsten Leemhuis wrote: > On 21.10.24 23:41, Mark Brown wrote: >> On Mon, Oct 21, 2024 at 12:07:13PM -0400, Sasha Levin wrote: >> >>> In an attempt to address the concerns, we're trying out a new "linus-next" >>> tree is being created and maintained with the following characteristics: > > BTW, in case anyone cares: I fully agree with what Kees wrote earlier > today elsewhere in this thread, e.g. things like "improve -next instead" > and "pre-merge bot": > http://lore.kernel.org/all/792F4759-EA33-48B8-9AD0-FA14FA69E86E%40kernel.org\ I am catching up on this thread. I agree with Kees and others on improve next instead. Adding one more next-like-thing will add to the confusion. > > Regarding that bot: a few of the CI folks and a developer or two told me > they want regzbot to react to PRs for Linus as well, so it can send > mails like "hey Linus, just so you know, this PR contains changes that > cause the following regressions not yet fixed". I think I like the idea, > but well, quite a few other improvements around regzbot and its use have > a much higher priority currently. > >>> 4. Continuous tree (not daily tags like in linux-next), >>> facilitating easier bisection >> >> Is this a pressing problem? I routinely bisect -next, you have to base >> things on Linus' tree (or pending-fixes) but otherwise it's not >> especially problematic. > > I wonder if part of this is a "don't know how to do that" aka "lack of > documentation" problem. I've recently seen some good guide or mailing > list post how to bisect -next somewhere, but I think it wasn't in our > Documentation/ directory. I need to search where that was (Mark, I might > misremember, but wasn't it you who posted it somewhere?) and could work > towards upstreaming that or some other guide. And don't worry, due to > the different target audience it would be much shorter text than other > documents I contributed. ;-) > Documentation could help. Tailoring the workflow to linux-next could help. All my branches are in linux-next. I don't send my PRs without keeping the content in linux-next for 3 days to week after rc1 - it is usually longer for merge-window content. This helps me find conflicts if any between all the tree selftest go through and mine. It helps work out conflicts in linux-next prior to sending pull request. My vote is for improving next instead of re-inventing next-like-thing. thanks, -- Shuah