From: "Ni, Ray" <ray.ni@intel.com>
To: "Tan, Dun" <dun.tan@intel.com>,
"devel@edk2.groups.io" <devel@edk2.groups.io>
Cc: "Dong, Eric" <eric.dong@intel.com>,
"Kumar, Rahul R" <rahul.r.kumar@intel.com>,
Gerd Hoffmann <kraxel@redhat.com>,
"Chen, Xiao X" <xiao.x.chen@intel.com>
Subject: Re: [Patch V2 2/2] UefiCpuPkg: Update PT code to support enable collect performance
Date: Tue, 25 Apr 2023 14:13:53 +0000 [thread overview]
Message-ID: <MN6PR11MB82449023E00B87C4E8DFC6248C649@MN6PR11MB8244.namprd11.prod.outlook.com> (raw)
In-Reply-To: <20230425090524.3027-3-dun.tan@intel.com>
> @@ -112,6 +115,7 @@ ProcTraceSupport (
> PROC_TRACE_DATA *ProcTraceData;
> CPUID_STRUCTURED_EXTENDED_FEATURE_FLAGS_EBX Ebx;
> CPUID_INTEL_PROCESSOR_TRACE_MAIN_LEAF_ECX Ecx;
> + CPUID_INTEL_PROCESSOR_TRACE_MAIN_LEAF_EBX MainLeafEbx;
1. can you update the "Ecx" to "ProcTraceEcx", and "MainLeafEbx" to "ProcTraceEbx"?
>
> //
> // Check if ProcTraceMemorySize option is enabled (0xFF means disable by
> user)
> @@ -141,6 +145,12 @@ ProcTraceSupport (
> ProcTraceData->ProcessorData[ProcessorNumber].RtitCtrl.Uint64 =
> AsmReadMsr64 (MSR_IA32_RTIT_CTL);
> ProcTraceData->ProcessorData[ProcessorNumber].RtitOutputBase.Uint64
> = AsmReadMsr64 (MSR_IA32_RTIT_OUTPUT_BASE);
> ProcTraceData-
> >ProcessorData[ProcessorNumber].RtitOutputMaskPtrs.Uint64 =
> AsmReadMsr64 (MSR_IA32_RTIT_OUTPUT_MASK_PTRS);
> +
> + if (ProcTraceData->EnablePerformanceCollecting) {
> + AsmCpuidEx (CPUID_INTEL_PROCESSOR_TRACE,
> CPUID_INTEL_PROCESSOR_TRACE_MAIN_LEAF, NULL, &MainLeafEbx.Uint32,
> NULL, NULL);
2. There is an existing Cpuid call earlier. Can you get the "EBX" value in the existing
Cpuid call? And you don't even need to check "EnablePerformanceCollecting" here
for the capability detection.
next prev parent reply other threads:[~2023-04-25 14:13 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-25 9:05 [Patch V2 0/2] Update ProcTrace feature code for new requirements duntan
2023-04-25 9:05 ` [Patch V2 1/2] UefiCpuPkg: Update code to support enable ProcTrace only on BSP duntan
2023-04-25 14:09 ` [edk2-devel] " Ni, Ray
2023-04-26 1:28 ` duntan
2023-04-25 9:05 ` [Patch V2 2/2] UefiCpuPkg: Update PT code to support enable collect performance duntan
2023-04-25 14:13 ` Ni, Ray [this message]
2023-04-26 1:27 ` duntan
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-list from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=MN6PR11MB82449023E00B87C4E8DFC6248C649@MN6PR11MB8244.namprd11.prod.outlook.com \
--to=devel@edk2.groups.io \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox