hwpmc/amd: add LBR v2 sampling on the PerfMonV2 path
Needs ReviewPublic
Actions

Authored by afscoelho_gmail.com on Sat, Oct 10, 1:22 AM.

Tags

None

Referenced Files

	F176567324: D60570.id189849.diff
	Mon, Oct 19, 9:58 PM

	F176549083: D60570.id189849.diff
	Mon, Oct 19, 6:27 PM

	F176491417: D60570.diff
	Mon, Oct 19, 7:05 AM

	F176483669: D60570.id189849.diff
	Mon, Oct 19, 5:42 AM

	F176465242: D60570.id189849.diff
	Mon, Oct 19, 2:00 AM

	F176463487: D60570.id189787.diff
	Mon, Oct 19, 1:36 AM

	Unknown Object (File)
	Sun, Oct 18, 10:20 PM

	Unknown Object (File)
	Sun, Oct 18, 10:40 AM

View All 29 Files

Subscribers

imp

Details

Reviewers

mhorne
gnn
ali_mashtizadeh.com

Group Reviewers

pmc

Summary

Read the branch records in the PMC interrupt and log them with the
sample. Clear the records on context switch and exec. Advertise
PMC_CAP_LBR.

Depends on D60569

Test Plan

Built amd64 GENERIC + hwpmc.ko, GENERIC without HWPMC_HOOKS, and arm64.
Ran tests/sys/pmc on AMD Zen 6 (LBR v2).

Diff Detail

Repository

rG FreeBSD src repository

Lint

Lint Skipped

Unit

Tests Skipped

Build Status

Buildable 77943
Build 74826: arc lint + arc unit

Event Timeline

afscoelho_gmail.com created this revision.Sat, Oct 10, 1:22 AM

Herald added a subscriber: imp. · View Herald TranscriptSat, Oct 10, 1:22 AM

Harbormaster completed remote builds in B77943: Diff 189325.Sat, Oct 10, 1:22 AM

afscoelho_gmail.com requested review of this revision.Sat, Oct 10, 1:22 AM

afscoelho_gmail.com added a child revision: D60571: libpmc, pmcstat: add the lbr qualifier and decode LBR records.

Rebase on the updated D60567. No code changes.

Harbormaster completed remote builds in B78145: Diff 189787.Tue, Oct 13, 7:57 PM

Rebase only. No code change.

Harbormaster completed remote builds in B78201: Diff 189849.Wed, Oct 14, 12:44 AM

Revision Contents
Changeset List

Path

Size

sys/

dev/

hwpmc/

hwpmc_amd.c

217 lines

hwpmc_amd_lbr.h

47 lines

tests/

sys/

pmc/

pmc_lbr_test.c

109 lines

Diff 189325

View Options

sys/dev/hwpmc/hwpmc_amd.c

View Options

sys/dev/hwpmc/hwpmc_amd_lbr.h

View Options

tests/sys/pmc/pmc_lbr_test.c

hwpmc/amd: add LBR v2 sampling on the PerfMonV2 pathNeeds ReviewPublicActions

Details

Diff Detail

Event Timeline

Revision ContentsChangeset List

Diff 189325

sys/dev/hwpmc/hwpmc_amd.c

sys/dev/hwpmc/hwpmc_amd_lbr.h

tests/sys/pmc/pmc_lbr_test.c

hwpmc/amd: add LBR v2 sampling on the PerfMonV2 path
Needs ReviewPublic
Actions

Revision Contents
Changeset List