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UefiCpuPkg/SmmCpu: Add PcdSmmApPerfLogEnable control AP perf-logging

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When a platform has lots of CPU cores/threads, perf-logging on every
AP produces lots of records. When this multiplies with number of SMIs
during post, the records are even more.

So, this patch adds a new PCD PcdSmmApPerfLogEnable (default TRUE)
to allow platform to turn off perf-logging on APs.

Signed-off-by: Ray Ni <ray.ni@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Jiaxin Wu <jiaxin.wu@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
This commit is contained in:
Ray Ni
2023-06-07 16:35:46 +08:00
committed by mergify[bot]
parent 2d3974a351
commit a87f5fdb3d
5 changed files with 21 additions and 3 deletions
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6
UefiCpuPkg/UefiCpuPkg.dec
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@@ -175,6 +175,12 @@
# @Prompt Support SmmFeatureControl.
gUefiCpuPkgTokenSpaceGuid.PcdSmmFeatureControlEnable|TRUE|BOOLEAN|0x32132110
## Indicates if SMM perf logging in APs will be enabled.<BR><BR>
# TRUE - SMM perf logging in APs will be enabled.<BR>
# FALSE - SMM perf logging in APs will not be enabled.<BR>
# @Prompt Enable SMM perf logging in APs.
gUefiCpuPkgTokenSpaceGuid.PcdSmmApPerfLogEnable|TRUE|BOOLEAN|0x32132114
[PcdsFixedAtBuild]
## List of exception vectors which need switching stack.
# This PCD will only take into effect if PcdCpuStackGuard is enabled.