Thread (174 messages) 174 messages, 11 authors, 2021-11-25
STALE1707d REVIEWED: 1 (0M)

[PATCH 5.10 116/154] perf/x86/intel/uncore: Fix IIO event constraints for Skylake Server

From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: 2021-11-24 13:38:19
Also in: lkml
Subsystem: performance events subsystem, the rest, x86 architecture (32-bit and 64-bit) · Maintainers: Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo, Namhyung Kim, Linus Torvalds, Thomas Gleixner, Borislav Petkov, Dave Hansen

From: Alexander Antonov <redacted>

[ Upstream commit 3866ae319c846a612109c008f43cba80b8c15e86 ]

According to the latest uncore document, COMP_BUF_OCCUPANCY (0xd5) event
can be collected on 2-3 counters. Update uncore IIO event constraints for
Skylake Server.

Fixes: cd34cd97b7b4 ("perf/x86/intel/uncore: Add Skylake server uncore support")
Signed-off-by: Alexander Antonov <redacted>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Kan Liang <redacted>
Link: https://lore.kernel.org/r/20211115090334.3789-3-alexander.antonov@linux.intel.com (local)
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/x86/events/intel/uncore_snbep.c | 1 +
 1 file changed, 1 insertion(+)
diff --git a/arch/x86/events/intel/uncore_snbep.c b/arch/x86/events/intel/uncore_snbep.c
index 229884f4134cb..ba26792d96731 100644
--- a/arch/x86/events/intel/uncore_snbep.c
+++ b/arch/x86/events/intel/uncore_snbep.c
@@ -3615,6 +3615,7 @@ static struct event_constraint skx_uncore_iio_constraints[] = {
 	UNCORE_EVENT_CONSTRAINT(0xc0, 0xc),
 	UNCORE_EVENT_CONSTRAINT(0xc5, 0xc),
 	UNCORE_EVENT_CONSTRAINT(0xd4, 0xc),
+	UNCORE_EVENT_CONSTRAINT(0xd5, 0xc),
 	EVENT_CONSTRAINT_END
 };
 
-- 
2.33.0


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