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From: Thomas Gleixner <tglx@linutronix.de>
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To: Sebastian Andrzej Siewior <bigeasy@linutronix.de>, kernel test robot
 <oliver.sang@intel.com>
Cc: oe-lkp@lists.linux.dev, lkp@intel.com, linux-kernel@vger.kernel.org,
 Peter Zijlstra <peterz@infradead.org>, Vlastimil Babka <vbabka@suse.cz>
Subject: Re: [PATCH] selftests/futex: Compile also on libnuma < 2.0.16
In-Reply-To: <20250715095203.vVbUIvob@linutronix.de>
References: <202507150858.bedaf012-lkp@intel.com>
 <20250715075735.tdXLHcEA@linutronix.de>
 <20250715095203.vVbUIvob@linutronix.de>
Date: Mon, 21 Jul 2025 19:22:50 +0200
Message-ID: <87h5z5tq51.ffs@tglx>
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On Tue, Jul 15 2025 at 11:52, Sebastian Andrzej Siewior wrote:
>  INCLUDES := -I../include -I../../ $(KHDR_INCLUDES)
> -CFLAGS := $(CFLAGS) -g -O2 -Wall -pthread $(INCLUDES) $(KHDR_INCLUDES)
> +CFLAGS := $(CFLAGS) -g -O2 -Wall -pthread $(INCLUDES) $(KHDR_INCLUDES) -DLIBUNMA_VER_$(LIBNUMA_TEST)=1

LIBUNMA?

>  int main(int argc, char *argv[])
>  {
>  	struct futex32_numa *futex_numa;
> -	int mem_size, i;
> +	int mem_size, i __maybe_unused;

Why this unused muck?

> +#ifdef LIBUNMA_VER_SUFFICIENT
>  	for (i = 0; i < 4; i++) {

if you can just do

       for (int i = 0; ...

?

Thanks,

        tglx