linux-kernel - RE: [PATCH v3] rcu: Add a minimum time for marking boot as completed

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Message-ID: <IA1PR11MB61714FA7A6FA92307B7FEF7C89B99@IA1PR11MB6171.namprd11.prod.outlook.com>
Date:   Mon, 13 Mar 2023 13:48:18 +0000
From:   "Zhuo, Qiuxu" <qiuxu.zhuo@...el.com>
To:     Uladzislau Rezki <urezki@...il.com>,
        "Paul E. McKenney" <paulmck@...nel.org>
CC:     "Paul E. McKenney" <paulmck@...nel.org>,
        Joel Fernandes <joel@...lfernandes.org>,
        Frederic Weisbecker <frederic@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Lai Jiangshan <jiangshanlai@...il.com>,
        "linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
        "rcu@...r.kernel.org" <rcu@...r.kernel.org>
Subject: RE: [PATCH v3] rcu: Add a minimum time for marking boot as completed

> From: Uladzislau Rezki <urezki@...il.com>
> [...]
> XQ-DQ54:/ # echo 1 > /sys/kernel/rc
> rcu_expedited       rcu_improve_normal  rcu_normal
> XQ-DQ54:/ # echo 1 > /sys/kernel/rcu_improve_normal 

Hi Rezki,

I applied your prototype patch, but I did NOT find the sys-node:
 "/sys/kernel/rcu_improve_normal" on my system.

What is this node used for? What am I missing? Thanks!

[ There were only "rcu_expedited" & " rcu_normal" sys nodes
on my system. ]

-Qiuxu

> XQ-DQ54:/ # exit 
> XQ-DQ54:/ $ exit urezki@...36:~/data/yoshino_bin/scripts$ ./test-cam.sh
> 533
> 549
> 563
> 537
> 540
> 563
> 531
> 549
> 548
> urezki@...36:~/data/yoshino_bin/scripts$
> 
> the taken time to run an app in milliseconds.
> 
> --
> Uladzislau Rezki