From: Valentin Schneider <valentin.schneider@arm.com>
To: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Vincent Guittot <vincent.guittot@linaro.org>,
linux-kernel@vger.kernel.org,
Dietmar Eggemann <dietmar.eggemann@arm.com>
Subject: Re: [PATCH v1] sched/topology: Make compiler happy about unused constant definitions
Date: Mon, 24 Aug 2020 18:09:41 +0100 [thread overview]
Message-ID: <jhjeenwdl7u.mognet@arm.com> (raw)
In-Reply-To: <20200824153902.57875-1-andriy.shevchenko@linux.intel.com>
Hi,
On 24/08/20 16:39, Andy Shevchenko wrote:
> Compilation of almost each file ends up with
>
> In file included from .../include/linux/energy_model.h:10,
> from .../include/linux/device.h:16,
> from .../drivers/spi/spi.c:8:
> .../include/linux/sched/topology.h:30:27: warning: ‘SD_DEGENERATE_GROUPS_MASK’ defined but not used [-Wunused-const-variable=]
> 30 | static const unsigned int SD_DEGENERATE_GROUPS_MASK =
> | ^~~~~~~~~~~~~~~~~~~~~~~~~
> ...
>
> Make compiler happy by annotating the static constants with __maybwe_unused.
>
That should see some use as long as the build is for SMP. This whole region
is guarded by #ifdef CONFIG_SMP, so an !SMP build shouldn't trigger this.
With what config/kernel are you getting this?
next prev parent reply other threads:[~2020-08-24 17:10 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-24 15:39 [PATCH v1] sched/topology: Make compiler happy about unused constant definitions Andy Shevchenko
2020-08-24 17:09 ` Valentin Schneider [this message]
2020-08-25 8:26 ` Andy Shevchenko
2020-08-25 9:03 ` Valentin Schneider
2020-08-25 10:12 ` Valentin Schneider
2020-08-25 11:24 ` Andy Shevchenko
2020-08-25 11:26 ` Andy Shevchenko
2020-08-25 11:32 ` Andy Shevchenko
2020-08-25 12:00 ` Valentin Schneider
2020-08-25 12:38 ` Andy Shevchenko
2020-08-25 10:23 ` David Laight
2020-08-25 11:30 ` 'Andy Shevchenko'
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