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From:   Valentin Schneider <vschneid@redhat.com>
To:     Tim Chen <tim.c.chen@linux.intel.com>,
        Peter Zijlstra <peterz@infradead.org>
Cc:     Juri Lelli <juri.lelli@redhat.com>,
        Vincent Guittot <vincent.guittot@linaro.org>,
        Ricardo Neri <ricardo.neri@intel.com>,
        "Ravi V . Shankar" <ravi.v.shankar@intel.com>,
        Ben Segall <bsegall@google.com>,
        Daniel Bristot de Oliveira <bristot@redhat.com>,
        Dietmar Eggemann <dietmar.eggemann@arm.com>,
        Len Brown <len.brown@intel.com>, Mel Gorman <mgorman@suse.de>,
        "Rafael J . Wysocki" <rafael.j.wysocki@intel.com>,
        Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>,
        Steven Rostedt <rostedt@goodmis.org>,
        Tim Chen <tim.c.chen@linux.intel.com>,
        Ionela Voinescu <ionela.voinescu@arm.com>, x86@kernel.org,
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        Yicong Yang <yangyicong@hisilicon.com>,
        Barry Song <v-songbaohua@oppo.com>,
        Chen Yu <yu.c.chen@intel.com>, Hillf Danton <hdanton@sina.com>
Subject: Re: [Patch v3 6/6] sched/debug: Dump domains' sched group flags
In-Reply-To: <ed1749262d94d95a8296c86a415999eda90bcfe3.1688770494.git.tim.c.chen@linux.intel.com>
References: <cover.1688770494.git.tim.c.chen@linux.intel.com>
 <ed1749262d94d95a8296c86a415999eda90bcfe3.1688770494.git.tim.c.chen@linux.intel.com>
Date:   Mon, 10 Jul 2023 21:33:53 +0100
Message-ID: <xhsmhcz0zv74e.mognet@vschneid.remote.csb>
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On 07/07/23 15:57, Tim Chen wrote:
> From: "Peter Zijlstra (Intel)" <peterz@infradead.org>
>
> There have been a case where the SD_SHARE_CPUCAPACITY sched group flag
> in a parent domain were not set and propagated properly when a degenerate
> domain is removed.
>
> Add dump of domain sched group flags of a CPU to make debug easier
> in the future.
>
> Usage:
> cat /debug/sched/domains/cpu0/domain1/groups_flags
> to dump cpu0 domain1's sched group flags.
>
> Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>

Reviewed-by: Valentin Schneider <vschneid@redhat.com>