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From: boonewang@zhaoxin.com
To: Dandan Bi <dandan.bi@intel.com>,devel@edk2.groups.io
Subject: Re: [edk2-devel] [PATCH v2 0/8] Update EDKII Performance infrastructure based on ACPI FPDT table
Date: Tue, 28 Apr 2020 00:45:21 -0700	[thread overview]
Message-ID: <19337.1588059921800305707@groups.io> (raw)
In-Reply-To: <1517320437-11688-1-git-send-email-dandan.bi@intel.com>

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Hi, Dandan

I have seen an email named “ [edk2] [PATCH v2 8/8] ShellPkg/Dp: Updated to dump perf log based on FPDT table “ in mail-archive ” and I know there is an update of Dp.

But I feel uncertain that:

-  // Determine in which direction the performance counter counts. -  TimerInfo.CountUp = (BOOLEAN) (TimerInfo.EndCount >= TimerInfo.StartCount); +  TimerInfo.StartCount = 0; +  TimerInfo.EndCount   = 0xFFFF; +  TimerInfo.CountUp = TRUE;

So it looks like we would not use timer count down feature , does it mean we should use count up timer such as TSC or ACPI Timer? Maybe is there any other cause?

I am looking forward your reply! Thanks!

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      parent reply	other threads:[~2020-04-28  7:45 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-01-30 13:53 [PATCH v2 0/8] Update EDKII Performance infrastructure based on ACPI FPDT table Dandan Bi
2018-01-30 13:53 ` [PATCH v2 1/8] MdeModulePkg:Add definitions for new Performance infrastructure Dandan Bi
2018-01-31  2:07   ` Zeng, Star
2018-01-30 13:53 ` [PATCH v2 2/8] MdeModulePkg/PeiPerformance:Updated to track FPDT record in PEI phase Dandan Bi
2018-01-30 13:53 ` [PATCH v2 3/8] MdeModulePkg/DxeCorePerformanceLib:Track FPDT record in DXE phase Dandan Bi
2018-05-01 16:26   ` Ard Biesheuvel
2018-05-22  0:33     ` Bi, Dandan
2018-05-22  8:51       ` Ard Biesheuvel
2018-05-22  8:58         ` Zeng, Star
2018-05-22  9:02           ` Ard Biesheuvel
2018-05-22  9:38             ` Zeng, Star
2018-05-22 10:00               ` Laszlo Ersek
2018-05-22 10:38                 ` Zeng, Star
2018-05-22 10:43                   ` Ard Biesheuvel
2018-05-22 10:00               ` Ard Biesheuvel
2018-01-30 13:53 ` [PATCH v2 4/8] MdeModulePkg/SmmCorePerformanceLib:Track FPDT record in SMM phase Dandan Bi
2018-01-30 13:53 ` [PATCH v2 5/8] MdeModulePkg/FirmwarePerformancePei:Add FPDT records for S3 phase Dandan Bi
2018-01-30 13:53 ` [PATCH v2 6/8] MdeModulePkg/FirmwarePerfDxe:Enhance for new pref infrastructure Dandan Bi
2018-01-30 13:53 ` [PATCH v2 7/8] MdeModulePkg/FirmwarePerfSmm:Enhance " Dandan Bi
2018-01-30 13:53 ` [PATCH v2 8/8] ShellPkg/Dp: Updated to dump perf log based on FPDT table Dandan Bi
2020-04-28  7:45 ` boonewang [this message]

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