linux-kernel - Re: [PATCH v2] sched/rt: Fix race in push_rt

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Message-ID: <20250217115409.05599bd2@gandalf.local.home>
Date: Mon, 17 Feb 2025 11:54:09 -0500
From: Steven Rostedt <rostedt@...dmis.org>
To: Harshit Agarwal <harshit@...anix.com>
Cc: Ingo Molnar <mingo@...hat.com>, Peter Zijlstra <peterz@...radead.org>,
 Juri Lelli <juri.lelli@...hat.com>, Vincent Guittot
 <vincent.guittot@...aro.org>, Dietmar Eggemann <dietmar.eggemann@....com>,
 Ben Segall <bsegall@...gle.com>, Mel Gorman <mgorman@...e.de>, Valentin
 Schneider <vschneid@...hat.com>, linux-kernel@...r.kernel.org,
 stable@...r.kernel.org, Jon Kohler <jon@...anix.com>, Gauri Patwardhan
 <gauri.patwardhan@...anix.com>, Rahul Chunduru
 <rahul.chunduru@...anix.com>, Will Ton <william.ton@...anix.com>
Subject: Re: [PATCH v2] sched/rt: Fix race in push_rt_task

On Fri, 14 Feb 2025 17:08:44 +0000
Harshit Agarwal <harshit@...anix.com> wrote:

> Co-developed-by: Jon Kohler <jon@...anix.com>
> Signed-off-by: Jon Kohler <jon@...anix.com>
> Co-developed-by: Gauri Patwardhan <gauri.patwardhan@...anix.com>
> Signed-off-by: Gauri Patwardhan <gauri.patwardhan@...anix.com>
> Co-developed-by: Rahul Chunduru <rahul.chunduru@...anix.com>
> Signed-off-by: Rahul Chunduru <rahul.chunduru@...anix.com>
> Signed-off-by: Harshit Agarwal <harshit@...anix.com>
> Tested-by: Will Ton <william.ton@...anix.com>
> ---
> Changes in v2:
> - As per Steve's suggestion, removed some checks that are done after
>   obtaining the lock that are no longer needed with the addition of new
>   check.
> - Moved up is_migration_disabled check.
> - Link to v1:
>   https://lore.kernel.org/lkml/20250211054646.23987-1-harshit@nutanix.com/
> ---
>  kernel/sched/rt.c | 54 +++++++++++++++++++++++------------------------
>  1 file changed, 26 insertions(+), 28 deletions(-)


Reviewed-by: Steven Rostedt (Google) <rostedt@...dmis.org>

Peter or Ingo,

Care to take his patch

Thanks,

-- Steve