linux-kernel - Re: [PATCH] cpupower : Fix header name to read idle state name

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Date:   Wed, 30 May 2018 21:39:36 -0600
From:   Shuah Khan <shuah@...nel.org>
To:     Abhishek Goel <huntbag@...ux.vnet.ibm.com>, trenn@...e.com,
        linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     s1seetee@...ux.vnet.ibm.com, Shuah Khan <shuah@...nel.org>
Subject: Re: [PATCH] cpupower : Fix header name to read idle state name

On 05/28/2018 05:03 AM, Abhishek Goel wrote:
> The names of the idle states in the output of cpupower monitor command are
> truncated to 4 characters. On POWER9, this creates ambiguity as the states
> are named "stop0", "stop1", etc.
> 
> root:~# cpupower monitor
>               |Idle_Stats
> PKG |CORE|CPU | snoo | stop | stop | stop | stop | stop | stop
>    0|   0|   0|  0.00|  0.00|  0.00|  0.00|  0.00|  0.00|  1.90
>    0|   0|   1|  0.00|  0.00|  0.00|  0.00|  0.00|  0.00|  0.00
>    0|   0|   2|  0.00|  0.00|  0.00|  0.00|  0.00|  0.00|  0.00
>    0|   0|   3|  0.00|  0.00|  0.00|  0.00|  0.00|  0.00|  0.00
> 
> This patch modifies the output to print the state name that results in a
> legible output. The names will be printed with atmost 1 padding in left.
> 
> root:~# cpupower monitor
>               | Idle_Stats
>  PKG|CORE| CPU|snooze|stop0L| stop0|stop1L| stop1|stop2L| stop2
>    0|   0|   0|  0.00|  0.00|  0.00|  0.00|  0.00|  0.00|  0.72
>    0|   0|   1|  0.00|  0.00|  0.00|  0.00|  0.00|  0.00|  0.00
>    0|   0|   2|  0.00|  0.00|  0.00|  0.00|  0.00|  0.00|  0.00
>    0|   0|   3|  0.00|  0.00|  0.00|  0.00|  0.00|  0.00|  0.00
> 
> This patch does not affect the output for intel.
> Output for intel before applying the patch:
> 
> root:~# cpupower monitor
>     |Idle_Stats
> CPU | POLL | C1-S | C1E- | C3-S | C6-S | C7s- | C8-S | C9-S | C10-
>    0|  0.00|  0.14|  0.39|  0.35|  7.41|  0.00| 17.67|  1.01| 70.03
>    2|  0.00|  0.19|  0.47|  0.10|  6.50|  0.00| 29.66|  2.17| 58.07
>    1|  0.00|  0.11|  0.50|  1.50|  9.11|  0.18| 18.19|  0.40| 66.63
>    3|  0.00|  0.67|  0.42|  0.03|  5.84|  0.00| 12.58|  0.77| 77.14
> 
> Output for intel after applying the patch:
> 
> root:~# cpupower monitor
>     | Idle_Stats
>  CPU| POLL | C1-S | C1E- | C3-S | C6-S | C7s- | C8-S | C9-S | C10-
>    0|  0.03|  0.33|  1.01|  0.27|  3.03|  0.00| 19.18|  0.00| 71.24
>    2|  0.00|  1.58|  0.58|  0.42|  8.55|  0.09| 21.11|  0.99| 63.32
>    1|  0.00|  1.26|  0.88|  0.43|  9.00|  0.02|  7.78|  4.65| 71.91
>    3|  0.00|  0.30|  0.42|  0.06| 13.62|  0.21| 30.29|  0.00| 52.45
> 
> Signed-off-by: Abhishek Goel <huntbag@...ux.vnet.ibm.com>
> ---
> 

Thanks - I have this queued for 4.18-rc1

-- Shuah