linux-kernel - Re: [PATCH 10/14] KVM: selftests: Use a single binary for dirty/clear log test

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Message-ID: <20200206224042.GK700495@xz-x1>
Date:   Thu, 6 Feb 2020 17:40:42 -0500
From:   Peter Xu <peterx@...hat.com>
To:     Andrew Jones <drjones@...hat.com>
Cc:     kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
        dinechin@...hat.com, sean.j.christopherson@...el.com,
        pbonzini@...hat.com, jasowang@...hat.com, yan.y.zhao@...el.com,
        mst@...hat.com, kevin.tian@...el.com, alex.williamson@...hat.com,
        dgilbert@...hat.com, vkuznets@...hat.com
Subject: Re: [PATCH 10/14] KVM: selftests: Use a single binary for
 dirty/clear log test

On Wed, Feb 05, 2020 at 12:39:39PM -0500, Peter Xu wrote:
> On Wed, Feb 05, 2020 at 06:11:09PM +0100, Andrew Jones wrote:
> > On Wed, Feb 05, 2020 at 10:46:17AM -0500, Peter Xu wrote:
> > > On Wed, Feb 05, 2020 at 10:28:52AM +0100, Andrew Jones wrote:
> > > > On Tue, Feb 04, 2020 at 09:58:38PM -0500, Peter Xu wrote:
> > > > > Remove the clear_dirty_log test, instead merge it into the existing
> > > > > dirty_log_test.  It should be cleaner to use this single binary to do
> > > > > both tests, also it's a preparation for the upcoming dirty ring test.
> > > > > 
> > > > > The default test will still be the dirty_log test.  To run the clear
> > > > > dirty log test, we need to specify "-M clear-log".
> > > > 
> > > > How about keeping most of these changes, which nicely clean up the
> > > > #ifdefs, but also keeping the separate test, which I think is the
> > > > preferred way to organize and execute selftests. We can use argv[0]
> > > > to determine which path to take rather than a command line parameter.
> > > 
> > > Hi, Drew,
> > > 
> > > How about we just create a few selftest links that points to the same
> > > test binary in Makefile?  I'm fine with compiling it for mulitple
> > > binaries too, just in case the makefile trick could be even easier.
> > 
> > I think I prefer the binaries. That way they can be selectively moved
> > and run elsewhere, i.e. each test is a standalone test.
> 
> Sure, will do.

Or... Shall we still keep one binary, but by default run all the
supported logging mode in sequence in a single dirty_log_test?  Say,
run "./dirty_log_test" will run all supported tests one by one; run
"./dirty_log_test -M LOG_MODE" will only run specific mode.

With this patch it's fairly easy to achieve this too.

-- 
Peter Xu