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Date:   Wed, 7 Nov 2018 13:19:08 +0100
From:   Peter Zijlstra <peterz@infradead.org>
To:     Patrick Bellasi <patrick.bellasi@arm.com>
Cc:     linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
        Ingo Molnar <mingo@redhat.com>, Tejun Heo <tj@kernel.org>,
        "Rafael J . Wysocki" <rafael.j.wysocki@intel.com>,
        Vincent Guittot <vincent.guittot@linaro.org>,
        Viresh Kumar <viresh.kumar@linaro.org>,
        Paul Turner <pjt@google.com>,
        Quentin Perret <quentin.perret@arm.com>,
        Dietmar Eggemann <dietmar.eggemann@arm.com>,
        Morten Rasmussen <morten.rasmussen@arm.com>,
        Juri Lelli <juri.lelli@redhat.com>,
        Todd Kjos <tkjos@google.com>,
        Joel Fernandes <joelaf@google.com>,
        Steve Muckle <smuckle@google.com>,
        Suren Baghdasaryan <surenb@google.com>
Subject: Re: [PATCH v5 03/15] sched/core: uclamp: map TASK's clamp values
 into CPU's clamp groups
Message-ID: <20181107121908.GO9781@hirez.programming.kicks-ass.net>
References: <20181029183311.29175-1-patrick.bellasi@arm.com>
 <20181029183311.29175-4-patrick.bellasi@arm.com>
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On Mon, Oct 29, 2018 at 06:32:57PM +0000, Patrick Bellasi wrote:
> +struct uclamp_se {
> +	unsigned int value		: SCHED_CAPACITY_SHIFT + 1;
> +	unsigned int group_id		: order_base_2(UCLAMP_GROUPS);

Are you sure about ob2() ? seems weird we'll end up with 0 for
UCLAMP_GROUPS==1.

> +	unsigned int mapped		: 1;
> +};