linux-kernel - [PATCH 5.15 184/279] perf/x86/intel/uncore: Fix IIO event constraints for Snowridge

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Message-Id: <20211124115725.090343756@linuxfoundation.org>
Date:   Wed, 24 Nov 2021 12:57:51 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Alexander Antonov <alexander.antonov@...ux.intel.com>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>,
        Kan Liang <kan.liang@...ux.intel.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.15 184/279] perf/x86/intel/uncore: Fix IIO event constraints for Snowridge

From: Alexander Antonov <alexander.antonov@...ux.intel.com>

[ Upstream commit bdc0feee05174418dec1fa68de2af19e1750b99f ]

According to the latest uncore document, DATA_REQ_OF_CPU (0x83),
DATA_REQ_BY_CPU (0xc0) and COMP_BUF_OCCUPANCY (0xd5) events have
constraints. Add uncore IIO constraints for Snowridge.

Fixes: 210cc5f9db7a ("perf/x86/intel/uncore: Add uncore support for Snow Ridge server")
Signed-off-by: Alexander Antonov <alexander.antonov@...ux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Reviewed-by: Kan Liang <kan.liang@...ux.intel.com>
Link: https://lore.kernel.org/r/20211115090334.3789-4-alexander.antonov@linux.intel.com
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/x86/events/intel/uncore_snbep.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/x86/events/intel/uncore_snbep.c b/arch/x86/events/intel/uncore_snbep.c
index 9aba4ef77b13b..3660f698fb2aa 100644
--- a/arch/x86/events/intel/uncore_snbep.c
+++ b/arch/x86/events/intel/uncore_snbep.c
@@ -4529,6 +4529,13 @@ static void snr_iio_cleanup_mapping(struct intel_uncore_type *type)
 	pmu_iio_cleanup_mapping(type, &snr_iio_mapping_group);
 }
 
+static struct event_constraint snr_uncore_iio_constraints[] = {
+	UNCORE_EVENT_CONSTRAINT(0x83, 0x3),
+	UNCORE_EVENT_CONSTRAINT(0xc0, 0xc),
+	UNCORE_EVENT_CONSTRAINT(0xd5, 0xc),
+	EVENT_CONSTRAINT_END
+};
+
 static struct intel_uncore_type snr_uncore_iio = {
 	.name			= "iio",
 	.num_counters		= 4,
@@ -4540,6 +4547,7 @@ static struct intel_uncore_type snr_uncore_iio = {
 	.event_mask_ext		= SNR_IIO_PMON_RAW_EVENT_MASK_EXT,
 	.box_ctl		= SNR_IIO_MSR_PMON_BOX_CTL,
 	.msr_offset		= SNR_IIO_MSR_OFFSET,
+	.constraints		= snr_uncore_iio_constraints,
 	.ops			= &ivbep_uncore_msr_ops,
 	.format_group		= &snr_uncore_iio_format_group,
 	.attr_update		= snr_iio_attr_update,
-- 
2.33.0