From: Shrikanth Hegde <sshegde@linux.ibm.com>
To: paulmck@kernel.org, tglx@linutronix.de, peterz@infradead.org,
Ingo Molnar <mingo@kernel.org>
Cc: linux-kernel@vger.kernel.org, rcu@vger.kernel.org,
aboorvad@linux.ibm.com, boqun.feng@gmail.com,
frederic@kernel.org, joelagnelf@nvidia.com,
josh@joshtriplett.org, neeraj.upadhyay@kernel.org,
rostedt@goodmis.org, srikar@linux.ibm.com, urezki@gmail.com,
Vishal Chourasia <vishalc@linux.ibm.com>,
samir@linux.ibm.com
Subject: Re: [PATCH v5 1/1] cpuhp: Expedite RCU when toggling system-wide SMT mode
Date: Wed, 29 Jul 2026 20:23:48 +0530 [thread overview]
Message-ID: <cda6b648-2c3a-4b01-8126-933056f221a9@linux.ibm.com> (raw)
In-Reply-To: <e143d10e-69b1-455d-90b3-5f29a9482c15@linux.ibm.com>
On 7/21/26 10:01 AM, Shrikanth Hegde wrote:
>
>
> On 6/16/26 11:39 AM, Shrikanth Hegde wrote:
>>
>>
>
>>>>
>>>> On a large config system with 1920 CPUs, completion time improves from
>>>> ~1 hour to 5-6 minutes.
>>>>
>>>> Tested-by: Samir <samir@linux.ibm.com>
>>>> Reviewed-by: Shrikanth Hegde <sshegde@linux.ibm.com>
>>>> Signed-off-by: Vishal Chourasia <vishalc@linux.ibm.com>
>>>
>>> From an RCU viewpoint:
>>>
>>> Reviewed-by: Paul E. McKenney <paulmck@kernel.org>
>>
>> Thank you Paul for reviewing this.
>>
>>>
>>> I am guessing that you will be taking this up some other path, but if
>>> you would like it to to via RCU, please let me know.
>>>
>>> Thanx, Paul
>>>
>>
>> I would prefer this to go via tip tree since main change is in cpu.c
>>
>> Thomas, peter,
>> What do you guys suggest? can this go via tip tree?
>>
>> Also, do you have any other review comments on this or test to be done?
>>
>
> Gentle Ping.
>
> Thomas, Peter, Ingo, Can this go via tip tree?
> Do you guys have any comments to be addressed?
>
> Or Do you want it to go via RCU tree?
>
Gentle Reminder.
This might have fell through the cracks.
Are there any concerns still to be addressed?
prev parent reply other threads:[~2026-07-29 14:54 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-15 4:25 [PATCH v5 0/1] " Vishal Chourasia
2026-06-15 4:25 ` [PATCH v5 1/1] " Vishal Chourasia
2026-06-15 15:05 ` Paul E. McKenney
2026-06-16 6:09 ` Shrikanth Hegde
2026-07-21 4:31 ` Shrikanth Hegde
2026-07-29 14:53 ` Shrikanth Hegde [this message]
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