linux-kernel - Re: [PATCH 1/2] test_xarray: add tests for advanced multi-index use

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Message-ID: <ZVfT3bs9+F0jqIAw@casper.infradead.org>
Date:   Fri, 17 Nov 2023 20:58:05 +0000
From:   Matthew Wilcox <willy@...radead.org>
To:     Luis Chamberlain <mcgrof@...nel.org>
Cc:     kernel test robot <oliver.sang@...el.com>,
        Daniel Gomez <da.gomez@...sung.com>, oe-lkp@...ts.linux.dev,
        lkp@...el.com, linux-kernel@...r.kernel.org,
        "gost.dev@...sung.com" <gost.dev@...sung.com>,
        Pankaj Raghav <p.raghav@...sung.com>
Subject: Re: [PATCH 1/2] test_xarray: add tests for advanced multi-index use

On Fri, Nov 17, 2023 at 12:54:09PM -0800, Luis Chamberlain wrote:
> +/*
> + * Can be used in contexts which busy loop on large number of entries but can
> + * sleep and timing is if no importance to test correctness.
> + */
> +#define XA_BUG_ON_RELAX(xa, x) do {				\
> +	if ((tests_run % 1000) == 0)				\
> +		schedule();					\
> +	XA_BUG_ON(xa, x);					\
> +} while (0)

That is awful.  Please don't do that.  You're mixing two completely
unrelated thing into the same macro, which makes no sense.  Not only
that, it's a macro which refers to something in the containing
environment that isn't a paramter to the macro.