[PATCH 0/5] Fix UPI uncore issue on SPR

kan.liang
2022-11-29T19:10:49Z

The discovery table of UPI on SPR MCC is broken. The patch series is
to mitigate the issue by providing a hardcode pre-defined table.

The broken discovery table can trigger a kernel warning message, which
is overkilled. The patch series also refine the error handling code.

Kan Liang (5):
perf/x86/uncore: Factor out uncore_device_to_die()
perf/x86/uncore: Fix potential NULL pointer in uncore_get_alias_name
perf/x86/uncore: Ignore broken units in discovery table
perf/x86/uncore: Add a quirk for UPI on SPR
perf/x86/uncore: Don't WARN_ON_ONCE() for a broken discovery table

arch/x86/events/intel/uncore.c | 34 ++++-
arch/x86/events/intel/uncore.h | 4 +
arch/x86/events/intel/uncore_discovery.c | 60 ++++++---
arch/x86/events/intel/uncore_discovery.h | 14 +-
arch/x86/events/intel/uncore_snbep.c | 158 ++++++++++++++++++-----
5 files changed, 210 insertions(+), 60 deletions(-)

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2.35.1