linux-kernel - Re: [PATCH v30 12/13] mm/damon: Add user space selftests

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Date:   Thu, 17 Jun 2021 11:35:04 +0000
From:   SeongJae Park <sj38.park@...il.com>
To:     "Boehme, Markus" <markubo@...zon.de>
Cc:     "sj38.park@...il.com" <sj38.park@...il.com>,
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        "linux-damon@...zon.com" <linux-damon@...zon.com>,
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Subject: Re: [PATCH v30 12/13] mm/damon: Add user space selftests

From: SeongJae Park <sjpark@...zon.de>

Hello Markus,

On Thu, 17 Jun 2021 11:29:41 +0000 "Boehme, Markus" <markubo@...zon.de> wrote:

> On Thu, 2021-06-17 at 11:28 +0000, Boehme, Markus wrote:
> > On Wed, 2021-06-16 at 07:31 +0000, SeongJae Park wrote:
> > > From: SeongJae Park <sjpark@...zon.de>
> > > 
> > > This commit adds a simple user space tests for DAMON.  The tests
> > > are
> > > using kselftest framework.
> > > 
> > > Signed-off-by: SeongJae Park <sjpark@...zon.de>
> > > ---
> > >  tools/testing/selftests/damon/Makefile        |  7 ++
> > >  .../selftests/damon/_chk_dependency.sh        | 28 +++++++
> > >  .../testing/selftests/damon/debugfs_attrs.sh  | 75
> > > +++++++++++++++++++
> > >  3 files changed, 110 insertions(+)
> > >  create mode 100644 tools/testing/selftests/damon/Makefile
> > >  create mode 100644
> > > tools/testing/selftests/damon/_chk_dependency.sh
> > >  create mode 100755 tools/testing/selftests/damon/debugfs_attrs.sh
> > > 
> > > [...]
> > > diff --git a/tools/testing/selftests/damon/debugfs_attrs.sh
> > > b/tools/testing/selftests/damon/debugfs_attrs.sh
> > > new file mode 100755
> > > index 000000000000..60342d6c86d8
> > > --- /dev/null
> > > +++ b/tools/testing/selftests/damon/debugfs_attrs.sh
[...]
> > > +
> > > +test_content() {
> > > +	file=$1
> > > +	orig_content=$2
> > > +	expected=$3
> > > +	expect_reason=$4
> > > +
> > > +	content=$(cat "$file")
> > > +	if [ "$content" != "$content" ]
> > 
> > That'll always evaluate false and should compare against "expected"
> > instead.

Good catch, I will fix so in the next spin.

> > 
> 
> Feel free to add Reviewed-by: Markus Boehme <markubo@...zon.de> when
> this is fixed.

Thank you!

> 
> > > +	then
> > > +		echo "reading $file expected $expected but $content"
> > > +		echo "expected because: $expect_reason"
> > > +		echo "$orig_content" > "$file"
> > > +		exit 1
> > > +	fi
> > > +}


Thanks,
SeongJae Park

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