linux-kernel - Re: [PATCH 0/8] nolibc: small updates required for the self-tests

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Date:   Mon, 21 Mar 2022 13:29:08 -0700
From:   "Paul E. McKenney" <paulmck@...nel.org>
To:     Willy Tarreau <w@....eu>
Cc:     linux-kernel@...r.kernel.org, Ammar Faizi <ammarfaizi2@...weeb.org>
Subject: Re: [PATCH 0/8] nolibc: small updates required for the self-tests

On Mon, Mar 21, 2022 at 06:33:06PM +0100, Willy Tarreau wrote:
> Hello Paul,
> 
> while developing the nolibc self-tests, I naturally faced a few
> limitations ranging from missing POLL* flags to missing strcmp() or
> getenv(), as well as the ability for printf() to print "(null)" on
> "%s" instead of crashing.
> 
> This series adds a makefile and a headers installation target that
> creates a sysroot made of kernel headers and nolibc headers, which
> significantly ease building programs.
> 
> I already have some test code with roughly 75 tests, but I find it
> misplaced in the nolibc dir, I need to move it to testing/selftests/
> before sending it to you.
> 
> This series is intended to be an add-on to what you already have in your
> dev branch. I don't intend to send you much more stuff on top of this,
> but I expect to see an update from Ammar's patch set (CCed). With all
> this I think we'll have a good basis to easily add new tests.

I have pulled this series in for review and testing, thank you!

It won't go into -next until v5.18-rc1 comes out, in about two weeks,
but it will at least be in -rcu.

I removed an ostensibly extraneous blank line from the end of
tools/include/nolibc/Makefile.  So please let me know if that blank line
is actually necessary.

							Thanx, Paul

> Thanks!
> Willy
> 
> ---
> Willy Tarreau (8):
>   tools/nolibc/stdio: make printf(%s) accept NULL
>   tools/nolibc/stdlib: add a simple getenv() implementation
>   tools/nolibc/stdio: add support for '%p' to vfprintf()
>   tools/nolibc/string: add strcmp() and strncmp()
>   tools/nolibc/sys: add syscall definition for getppid()
>   tools/nolibc/types: add poll() and waitpid() flag definitions
>   tools/nolibc: add a makefile to install headers
>   tools/nolibc: add the nolibc subdir to the common Makefile
> 
>  tools/Makefile                |  4 ++++
>  tools/include/nolibc/Makefile | 43 +++++++++++++++++++++++++++++++++++
>  tools/include/nolibc/stdio.h  | 32 +++++++++++++++++---------
>  tools/include/nolibc/stdlib.h | 23 +++++++++++++++++++
>  tools/include/nolibc/string.h | 23 +++++++++++++++++++
>  tools/include/nolibc/sys.h    | 17 ++++++++++++++
>  tools/include/nolibc/types.h  | 10 ++++++++
>  7 files changed, 141 insertions(+), 11 deletions(-)
>  create mode 100644 tools/include/nolibc/Makefile
> 
> -- 
> 2.35.1
>