linux-kernel - Re: [12/14] torture: Add testing of RCU's Rust bindings to torture.sh

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Message-ID: <174501535977.2294.12061268025763464111@patchwork.local>
Date: Fri, 18 Apr 2025 22:29:19 -0000
From: Joel Fernandes <joelagnelf@...dia.com>
To: "Paul E. McKenney" <paulmck@...nel.org>
Cc: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>, Joel Fernandes <joelagnelf@...dia.com>, linux-kernel <linux-kernel@...r.kernel.org>, Josh Triplett <josh@...htriplett.org>, Steven Rostedt <rostedt@...dmis.org>, Mathieu Desnoyers <mathieu.desnoyers@...icios.com>, Lai Jiangshan <jiangshanlai@...il.com>, Shuah Khan <shuah@...nel.org>, Miguel Ojeda <ojeda@...nel.org>, Alex Gaynor <alex.gaynor@...il.com>, Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>, Björn Roy Baron <bjorn3_gh@...tonmail.com>, Benno Lossin <benno.lossin@...ton.me>, Andreas Hindborg <a.hindborg@...nel.org>, Alice Ryhl <aliceryhl@...gle.com>, Trevor Gross <tmgross@...ch.edu>, Danilo Krummrich <dakr@...nel.org>, Nathan Chancellor <nathan@...nel.org>, Nick Desaulniers <nick.desaulniers+lkml@...il.com>, Bill Wendling <morbo@...gle.com>, Justin Stitt <justinstitt@...gle.com>, rcu <rcu@...r.kernel.org>, linux-kselftest <linux-kselftest@...r.kernel.org>, rust-for-linux <rust-for-linux@...r.
 kernel.org>, llvm <llvm@...ts.linux.dev>
Subject: Re: [12/14] torture: Add testing of RCU's Rust bindings to torture.sh

Hello, Paul,

On Fri, 18 Apr 2025 22:26:17 GMT, "Paul E. McKenney" wrote:
> On Fri, Apr 18, 2025 at 08:32:46PM +0200, Miguel Ojeda wrote:
> > On Fri, Apr 18, 2025 at 8:04 PM Paul E. McKenney <paulmck@...nel.org> wrot
> e:
> > >
> > > Suppose we fired up a guest OS and captured the console output.  Is ther
> e
> > > a way to make that guest OS shut down automatically at the end of the
> > > test and to extract the test results?
> > 
> > Ah, sorry, I thought you were already doing something like that, i.e.
> > that perhaps you could reuse some kernel build you already had and
> > avoiding a full rebuild/mrproper. The KUnit Python script uses QEMU
> > and parses the results; e.g. you could look for the results lines
> > like:
> > 
> >     # Totals: pass:133 fail:0 skip:0 total:133
> >     ok 2 rust_doctests_kernel
> 
> Alternatively, I could clone a copy of the current archive into a
> temporary directory, "make mrproper" there, run kunit normally, then
> clean up the temporary directory.  Extra storage, but quite a bit
> more robust and user-friendly.
> 

Just to be on the same page, is the concern about the
slowness of mrproper or that it kills the kernel build
artifacts requiring a clean build?

What kind of improvement are we looking for and why would
this patch in its current form not work?

thanks,

- Joel

> Other thoughts?
> 
> 							Thanx, Paul