linux-kernel - Re: [PATCH 3/3] selftests: add readfile(2) selftests

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Date:   Sun, 5 Jul 2020 08:55:14 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:     Al Viro <viro@...iv.linux.org.uk>,
        "Michael Kerrisk (man-pages)" <mtk.manpages@...il.com>,
        Shuah Khan <shuah@...nel.org>,
        Linux API <linux-api@...r.kernel.org>,
        Linux FS Devel <linux-fsdevel@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-man@...r.kernel.org,
        "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@...r.kernel.org>
Subject: Re: [PATCH 3/3] selftests: add readfile(2) selftests

On Sat, Jul 04, 2020 at 08:38:26PM +0200, Geert Uytterhoeven wrote:
> Hi Greg,
> 
> On Sat, Jul 4, 2020 at 4:05 PM Greg Kroah-Hartman
> <gregkh@...uxfoundation.org> wrote:
> > Test the functionality of readfile(2) in various ways.
> >
> > Also provide a simple speed test program to benchmark using readfile()
> > instead of using open()/read()/close().
> >
> > Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> 
> Any benchmark results to share?

Yes, the readfile_speed.c file will show you that on your machine, I'll
post the results of that for two of my machines when I send the next
version of this patch series.

> 
> > --- /dev/null
> > +++ b/tools/testing/selftests/readfile/readfile.c
> 
> > +static void readfile(const char *filename)
> > +{
> > +//     int root_fd;
> 
> ???

Ugh, sorry about that, I obviously didn't clean up my last tests from
this file, thanks for catching that.

I should add more tests to validate the flag handling as well, will do
all of that for the next version, thanks for noticing this.

greg k-h