From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=date : from : to : cc : subject : message-id : references : content-type : content-transfer-encoding : in-reply-to : mime-version; s=corp-2021-07-09; bh=Fww4LMKAkw1KxndDvijc2ne7e/sB7U6grcNDr5gP5JI=; b=QZNadUBM1vmlCpBexwCgz43SMD2HiA5n+dIRBpWNiI5o278uqQTWO7NcEItZ57nzrypW vBujBZ0TTsM2dnlOtQEhK54T2Esto++8gB+lKfqX8xK/hGBC0XJNgBMLJyTuLKO9f5OZ 3Mm+IvJQuHjR/tFiAsbI4u2CZ+Rlkz1Wx/Rm5xX7Sii9X8/VBbFlgZh1l056ffVKFPld Ay/VrkwEuQGrJo4ZyxN7Ef4Kp5p7KAqZzqKnTAL5Id75KvB/H1pnQqOkQSe8arbXkMe2 mF7Zz93lqdWkaaMWM52A9SZP2aNGFWAPzhm2sUKTuiKYyZuFcsF4HrT3iNGAP278IHRU Ww== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.onmicrosoft.com; s=selector2-oracle-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=Fww4LMKAkw1KxndDvijc2ne7e/sB7U6grcNDr5gP5JI=; b=GiYisA9ZYi/4ilTyJmZFkCE0NEh7X2TO9ZTCdwiK0s4URFY0sEb70EgLR5m5ZdpnV75C9CspGeWzSSSI5v+Y2qFpK5OMUiyw2cGkKlcuVrpl4OY1KuxFXTEuSn2VcN+eixpIYVz8dQ/1Mf4xGnejNuPuG6gv4DAOiKihX/Jwmoc= Date: Fri, 19 Nov 2021 15:30:01 +0300 From: Dan Carpenter Subject: Re: [PATCH v1 1/3] media: staging: tegra-vde: Support reference picture marking Message-ID: <20211119123001.GR27562@kadam> References: <20211114222353.22435-1-digetx@gmail.com> <20211114222353.22435-2-digetx@gmail.com> <42b24cd0-ac37-3cfe-1fb2-d6292015318a@gmail.com> <20211115124402.GE26989@kadam> <20211115154858.GG27562@kadam> <89166c20-6b05-ed4b-ed45-451f4f1e10bc@gmail.com> <20211118061418.GO26989@kadam> Content-Type: text/plain; charset="utf-8" Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 To: Dmitry Osipenko Cc: Thierry Reding , Jonathan Hunter , Mauro Carvalho Chehab , Greg Kroah-Hartman , Anton Bambura , Hans Verkuil , linux-media@vger.kernel.org, linux-staging@lists.linux.dev, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, smatch@vger.kernel.org List-ID: On Thu, Nov 18, 2021 at 04:56:38PM +0300, Dmitry Osipenko wrote: > 18.11.2021 09:14, Dan Carpenter пишет: > > It's not hard to run Smatch yourself... > > > > Depending on if you're on a apt distro or yum distro then fetch the > > dependencies with one of the follow commands: > > apt-get install gcc make sqlite3 libsqlite3-dev libdbd-sqlite3-perl libssl-dev libtry-tiny-perl > > yum install gcc make sqlite3 sqlite-devel sqlite perl-DBD-SQLite openssl-devel perl-Try-Tiny > > > > git clone https://github.com/error27/smatch > > cd smatch > > make > > cd ~/kernel_source/ > > ~/smatch/smatch_scripts/kchecker drivers/subsystem/ > > Thanks, I was running Smatch couple times in the past. Finding how to > run Smatch isn't the problem, the thing is that Smatch either isn't > packaged by distros or packaged version is outdated, hence there is a > need to maintain it by yourself. > > Also, is it guaranteed that Smatch will always work properly with > linux-next? I work against linux-next every day so generally, yes. But that reminds me that linux-next broke while I was on vacation and I haven't yet pushed the fixes. > > I imagine more developers could start to engage in using Smatch if > kernel supported 'make smatch' command which would automate the process > of fetching, building and running Smatch. > > Couldn't the "kernel" version of Smatch reside in the kernel's tools/? > Or maybe just the parts of Smatch that are necessary for kernel > checking, like kernel's DB/scripts and etc. Doesn't it make sense? I'm not sure that makes sense really... I'll expand on that in a bit but the shorter answer is also that I don't have the bandwidth to make it work. I just suck at releases and testing. So this would bitrot and be horrible. Smatch does need a better way to manage data for other projects. Right now linux-next is the first class citizen. It's the only thing where I'm positive that it gets tested regularly. All the data in smatch_data/ is from linux-next. And also there should be a better way to check specific version of the kernel because people quite often use the same directory and just check out v4.12 to test that and switch back. I do that and I've got scripts on my system ./switch_to_tree4v1.sh which set up the symlinks for me. But for linux-next it's fine. Also by the time kernels have been released the remaining Smatch warnings are almost all false positives. To me the data in smatch_data/ is not so important as the cross function database. And the cross function database can't be distributed. It's too huge and it's specific to a given .config. regards, dan carpenter