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Date:   Mon, 30 Dec 2019 21:19:27 -0800
From:   Guenter Roeck <linux@roeck-us.net>
To:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc:     linux-kernel@vger.kernel.org, torvalds@linux-foundation.org,
        akpm@linux-foundation.org, shuah@kernel.org, patches@kernelci.org,
        ben.hutchings@codethink.co.uk, lkft-triage@lists.linaro.org,
        stable@vger.kernel.org
Subject: Re: [PATCH 5.4 000/434] 5.4.7-stable review
Message-ID: <20191231051927.GB15160@roeck-us.net>
References: <20191229172702.393141737@linuxfoundation.org>
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 <20191230174522.GA1499079@kroah.com>
 <20191230180849.222x3hg2tnpwz7dn@xps.therub.org>
 <20191230194204.GB1880685@kroah.com>
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On Mon, Dec 30, 2019 at 08:42:04PM +0100, Greg Kroah-Hartman wrote:
> On Mon, Dec 30, 2019 at 12:08:49PM -0600, Dan Rue wrote:
> > On Mon, Dec 30, 2019 at 06:45:22PM +0100, Greg Kroah-Hartman wrote:
> > > On Mon, Dec 30, 2019 at 10:34:37AM -0600, Dan Rue wrote:
> > > > On Sun, Dec 29, 2019 at 06:20:53PM +0100, Greg Kroah-Hartman wrote:
> > > > > This is the start of the stable review cycle for the 5.4.7 release.
> > > > > There are 434 patches in this series, all will be posted as a response
> > > > > to this one.  If anyone has any issues with these being applied, please
> > > > > let me know.
> > > > 
> > > > Results from Linaro’s test farm.
> > > > No regressions on arm64, arm, x86_64, and i386.
> > > 
> > > Thanks for testing all of these and letting me know.
> > > 
> > > But didn't you add perf build testing to your builds?  That should have
> > > broken things, so I am guessing not :(
> > 
> > We do build (and run) perf, and it worked for us. Which patch was the
> > problem? I can go look at why our config didn't hit the offending
> > code/build path.
> 
> See the thread from Guenter and from others on the perf patches
> themselves in this release for the details.
> 

perf is a beast. It only builds everything if a large number of
support libraries is installed on the build system. If not, it
only builds a small subset. I bet my test builds hit the failure
because I have some library installed on my build servers that
isn't installed on Linaro's servers.

This is why I can't cross-build perf; my cross build environments
don't have the necessary libraries installed.

Guenter