<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<meta name="Generator" content="Microsoft Word 14 (filtered medium)">
<!--[if !mso]><style>v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style><![endif]--><style><!--
/* Font Definitions */
@font-face
{font-family:SimSun;
panose-1:2 1 6 0 3 1 1 1 1 1;}
@font-face
{font-family:SimSun;
panose-1:2 1 6 0 3 1 1 1 1 1;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:"\@SimSun";
panose-1:2 1 6 0 3 1 1 1 1 1;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p
{mso-style-priority:99;
margin:0cm;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
pre
{mso-style-priority:99;
mso-style-link:"HTML Preformatted Char";
margin:0cm;
margin-bottom:.0001pt;
font-size:10.0pt;
font-family:"Courier New";}
p.MsoAcetate, li.MsoAcetate, div.MsoAcetate
{mso-style-priority:99;
mso-style-link:"Balloon Text Char";
margin:0cm;
margin-bottom:.0001pt;
font-size:8.0pt;
font-family:"Times New Roman","serif";}
span.HTMLPreformattedChar
{mso-style-name:"HTML Preformatted Char";
mso-style-priority:99;
mso-style-link:"HTML Preformatted";
font-family:"Courier New";}
span.BalloonTextChar
{mso-style-name:"Balloon Text Char";
mso-style-priority:99;
mso-style-link:"Balloon Text";
font-family:SimSun;}
span.EmailStyle22
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:72.0pt 72.0pt 72.0pt 72.0pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="ZH-CN" link="blue" vlink="purple">
<div class="WordSection1">
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">>> Power value is wrong reported by customer.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Hi Eric,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">What is the wrong value customer reported?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">In my end, there is no big difference between 20ms and 200ms or 2s. I tested on Fiji/Tonga when gpu idle or running fullscreen glxgears.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">why need 50 ms? <o:p>
</o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">How long does the SMU core take to complete one cycle of dpm tasks? I tested, it is less than 1 ms.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">So when we delay 20 ms, The output is the average value of more than 20 sampling.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Best Regards<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Rex<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> amd-gfx [mailto:amd-gfx-bounces@lists.freedesktop.org]
<b>On Behalf Of </b>Deucher, Alexander<br>
<b>Sent:</b> Friday, March 30, 2018 4:00 AM<br>
<b>To:</b> Huang, JinHuiEric; amd-gfx@lists.freedesktop.org<br>
<b>Subject:</b> Re: [PATCH] drm/amd/powerply: fix power reading on Fiji<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<div id="divtagdefaultwrapper">
<p><span lang="EN-US" style="font-family:"Calibri","sans-serif";color:black">Fiji and tonga I presume. The current code seems to work fine on tonga at least.<o:p></o:p></span></p>
<p><span lang="EN-US" style="font-family:"Calibri","sans-serif";color:black"><o:p> </o:p></span></p>
<p><span lang="EN-US" style="font-family:"Calibri","sans-serif";color:black">Alex<o:p></o:p></span></p>
</div>
<div class="MsoNormal" align="center" style="text-align:center"><span lang="EN-US">
<hr size="2" width="98%" align="center">
</span></div>
<div id="divRplyFwdMsg">
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black"> Huang, JinHuiEric<br>
<b>Sent:</b> Thursday, March 29, 2018 3:58:42 PM<br>
<b>To:</b> Deucher, Alexander; <a href="mailto:amd-gfx@lists.freedesktop.org">amd-gfx@lists.freedesktop.org</a><br>
<b>Subject:</b> Re: [PATCH] drm/amd/powerply: fix power reading on Fiji</span><span lang="EN-US">
<o:p></o:p></span></p>
<div>
<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
</div>
</div>
<div>
<p style="background:white"><span lang="EN-US">Right. This is only for Fiji. We should use PPSMC_MSG_GetCurrPkgPwr on poaris.<o:p></o:p></span></p>
<p style="background:white"><span lang="EN-US"><o:p> </o:p></span></p>
<p style="background:white"><span lang="EN-US">Thanks,<o:p></o:p></span></p>
<p style="background:white"><span lang="EN-US">Eric<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span lang="EN-US"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal" style="background:white"><span lang="EN-US">On 2018-03-29 03:54 PM, Deucher, Alexander wrote:<o:p></o:p></span></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<div id="x_divtagdefaultwrapper">
<p style="background:white"><span lang="EN-US" style="font-family:"Calibri","sans-serif";color:black">Thanks. Patch is:<o:p></o:p></span></p>
<p style="background:white"><span lang="EN-US" style="font-family:"Calibri","sans-serif";color:black">Acked-by: Alex Deucher
<a href="mailto:alexander.deucher@amd.com"><alexander.deucher@amd.com></a><o:p></o:p></span></p>
<p style="background:white"><span lang="EN-US" style="font-family:"Calibri","sans-serif";color:black">Care to make a patch to use
<span style="background:white">PPSMC_MSG_GetCurrPkgPwr </span>on polaris boards so we don't have to worry about the delay on them?<o:p></o:p></span></p>
<p style="background:white"><span lang="EN-US" style="font-family:"Calibri","sans-serif";color:black"><o:p> </o:p></span></p>
<p style="background:white"><span lang="EN-US" style="font-family:"Calibri","sans-serif";color:black">Alex<o:p></o:p></span></p>
</div>
<div class="MsoNormal" align="center" style="text-align:center;background:white">
<span lang="EN-US">
<hr size="2" width="98%" align="center">
</span></div>
<div id="x_divRplyFwdMsg">
<p class="MsoNormal" style="background:white"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black"> Huang, JinHuiEric<br>
<b>Sent:</b> Thursday, March 29, 2018 3:40:22 PM<br>
<b>To:</b> Deucher, Alexander; <a href="mailto:amd-gfx@lists.freedesktop.org">amd-gfx@lists.freedesktop.org</a><br>
<b>Subject:</b> Re: [PATCH] drm/amd/powerply: fix power reading on Fiji</span><span lang="EN-US">
<o:p></o:p></span></p>
<div>
<p class="MsoNormal" style="background:white"><span lang="EN-US"> <o:p></o:p></span></p>
</div>
</div>
<div>
<p style="background:white"><span lang="EN-US">This reading method is shared with AGT tool only on Fiji, because SMU FW doesn't support PPSMC_MSG_GetCurrPkgPwr message on Fiji. But since polaris10, PPSMC_MSG_GetCurrPkgPwr has been supported. We also use PPSMC_MSG_GetCurrPkgPwr
on vega which SMU FW control sampling period. Driver will not care about it.<o:p></o:p></span></p>
<p style="background:white"><span lang="EN-US"><o:p> </o:p></span></p>
<p style="background:white"><span lang="EN-US">Eric<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span lang="EN-US"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal" style="background:white"><span lang="EN-US">On 2018-03-29 03:31 PM, Deucher, Alexander wrote:<o:p></o:p></span></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<div id="x_x_divtagdefaultwrapper">
<p style="background:white"><span lang="EN-US" style="font-family:"Calibri","sans-serif";color:black">Do you know what the sampling period is on vega? We should try and be consistent. How about making this selectable via hwmon:<o:p></o:p></span></p>
<pre style="background:white"><span lang="EN-US" style="color:black">power[1-*]_average_interval Power use averaging interval. A poll<o:p></o:p></span></pre>
<pre style="background:white"><span lang="EN-US" style="color:black"> notification is sent to this file if the<o:p></o:p></span></pre>
<pre style="background:white"><span lang="EN-US" style="color:black"> hardware changes the averaging interval.<o:p></o:p></span></pre>
<pre style="background:white"><span lang="EN-US" style="color:black"> Unit: milliseconds<o:p></o:p></span></pre>
<pre style="background:white"><span lang="EN-US" style="color:black"> RW<o:p></o:p></span></pre>
<pre style="background:white"><span lang="EN-US" style="color:black"><o:p> </o:p></span></pre>
<pre style="background:white"><span lang="EN-US" style="color:black">power[1-*]_average_interval_max Maximum power use averaging interval<o:p></o:p></span></pre>
<pre style="background:white"><span lang="EN-US" style="color:black"> Unit: milliseconds<o:p></o:p></span></pre>
<pre style="background:white"><span lang="EN-US" style="color:black"> RO<o:p></o:p></span></pre>
<pre style="background:white"><span lang="EN-US" style="color:black"><o:p> </o:p></span></pre>
<pre style="background:white"><span lang="EN-US" style="color:black">power[1-*]_average_interval_min Minimum power use averaging interval<o:p></o:p></span></pre>
<pre style="background:white"><span lang="EN-US" style="color:black"> Unit: milliseconds<o:p></o:p></span></pre>
<pre style="background:white"><span lang="EN-US" style="color:black"> RO<o:p></o:p></span></pre>
<p style="background:white"><span lang="EN-US" style="font-family:"Calibri","sans-serif";color:black"><o:p> </o:p></span></p>
<p style="background:white"><span lang="EN-US" style="font-family:"Calibri","sans-serif";color:black">Then the user can select the interval they want.<o:p></o:p></span></p>
<p style="background:white"><span lang="EN-US" style="font-family:"Calibri","sans-serif";color:black"><o:p> </o:p></span></p>
<p style="background:white"><span lang="EN-US" style="font-family:"Calibri","sans-serif";color:black">Alex<o:p></o:p></span></p>
</div>
<div class="MsoNormal" align="center" style="text-align:center;background:white">
<span lang="EN-US">
<hr size="2" width="98%" align="center">
</span></div>
<div id="x_x_divRplyFwdMsg">
<p class="MsoNormal" style="background:white"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black"> amd-gfx
<a href="mailto:amd-gfx-bounces@lists.freedesktop.org"><amd-gfx-bounces@lists.freedesktop.org></a> on behalf of Eric Huang
<a href="mailto:JinHuiEric.Huang@amd.com"><JinHuiEric.Huang@amd.com></a><br>
<b>Sent:</b> Thursday, March 29, 2018 3:21:52 PM<br>
<b>To:</b> <a href="mailto:amd-gfx@lists.freedesktop.org">amd-gfx@lists.freedesktop.org</a><br>
<b>Cc:</b> Huang, JinHuiEric<br>
<b>Subject:</b> [PATCH] drm/amd/powerply: fix power reading on Fiji</span><span lang="EN-US">
<o:p></o:p></span></p>
<div>
<p class="MsoNormal" style="background:white"><span lang="EN-US"> <o:p></o:p></span></p>
</div>
</div>
<div>
<div>
<p class="MsoNormal" style="background:white"><span lang="EN-US" style="font-size:11.0pt">Power value is wrong reported by customer. It is a regression by<br>
<br>
commit a7c7bc4c0c47eaac77b8fa92f0672032df7f4254<br>
Author: Rex Zhu <a href="mailto:Rex.Zhu@amd.com"><Rex.Zhu@amd.com></a><br>
Date: Mon Mar 27 15:32:59 2017 +0800<br>
<br>
drm/amd/powerplay: reduce sample period time<br>
<br>
for power readings.<br>
<br>
Signed-off-by: Rex Zhu <a href="mailto:Rex.Zhu@amd.com"><Rex.Zhu@amd.com></a><br>
Reviewed-by: Alex Deucher <a href="mailto:alexander.deucher@amd.com"><alexander.deucher@amd.com></a><br>
Signed-off-by: Alex Deucher <a href="mailto:alexander.deucher@amd.com"><alexander.deucher@amd.com></a><br>
<br>
The theoretical sampling period is from 50ms to 4sec, original 2sec<br>
is long but correct, and 20ms is too short. change it to more<br>
reasonable 200ms.<br>
<br>
Signed-off-by: Eric Huang <a href="mailto:JinHuiEric.Huang@amd.com"><JinHuiEric.Huang@amd.com></a><br>
---<br>
drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c | 3 ++-<br>
1 file changed, 2 insertions(+), 1 deletion(-)<br>
<br>
diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c<br>
index a03b7fe..7631d80 100644<br>
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c<br>
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c<br>
@@ -3377,7 +3377,8 @@ static int smu7_get_gpu_power(struct pp_hwmgr *hwmgr,<br>
"Failed to start pm status log!",<br>
return -1);<br>
<br>
- msleep_interruptible(20);<br>
+ /* Sampling period from 50ms to 4sec */<br>
+ msleep_interruptible(200);<br>
<br>
PP_ASSERT_WITH_CODE(!smum_send_msg_to_smc(hwmgr,<br>
PPSMC_MSG_PmStatusLogSample),<br>
-- <br>
2.7.4<br>
<br>
_______________________________________________<br>
amd-gfx mailing list<br>
<a href="mailto:amd-gfx@lists.freedesktop.org">amd-gfx@lists.freedesktop.org</a><br>
<a href="https://lists.freedesktop.org/mailman/listinfo/amd-gfx">https://lists.freedesktop.org/mailman/listinfo/amd-gfx</a><o:p></o:p></span></p>
</div>
</div>
</blockquote>
<p class="MsoNormal" style="background:white"><span lang="EN-US"><o:p> </o:p></span></p>
</div>
</blockquote>
<p class="MsoNormal" style="background:white"><span lang="EN-US"><o:p> </o:p></span></p>
</div>
</div>
</body>
</html>