[RFC PATCH v7 05/28] perf: arm_spe_pmu: Add PMBIDR_EL1 and PMSIDR_EL1 to struct arm_spe_pmu

[Alexandru Elisei]

Signed-off-by: Alexandru Elisei <alexandru.elisei at arm.com>
---
 drivers/perf/arm_spe_pmu.c       | 3 +++
 include/linux/perf/arm_spe_pmu.h | 2 ++
 2 files changed, 5 insertions(+)

diff --git a/drivers/perf/arm_spe_pmu.c b/drivers/perf/arm_spe_pmu.c
index 79c571a649d5..42ba0924bd02 100644
--- a/drivers/perf/arm_spe_pmu.c
+++ b/drivers/perf/arm_spe_pmu.c
@@ -1095,6 +1095,7 @@ static void __arm_spe_pmu_dev_probe(void *info)
 			"profiling buffer owned by higher exception level\n");
 		return;
 	}
+	spe_pmu->pmbidr_el1 = reg;
 
 	/* Minimum alignment. If it's out-of-range, then fail the probe */
 	fld = FIELD_GET(PMBIDR_EL1_ALIGN, reg);
@@ -1107,6 +1108,8 @@ static void __arm_spe_pmu_dev_probe(void *info)
 
 	/* It's now safe to read PMSIDR and figure out what we've got */
 	reg = read_sysreg_s(SYS_PMSIDR_EL1);
+	spe_pmu->pmsidr_el1 = reg;
+
 	if (FIELD_GET(PMSIDR_EL1_FE, reg))
 		spe_pmu->features |= SPE_PMU_FEAT_FILT_EVT;
 
diff --git a/include/linux/perf/arm_spe_pmu.h b/include/linux/perf/arm_spe_pmu.h
index af86fd184050..97b14e236fcd 100644
--- a/include/linux/perf/arm_spe_pmu.h
+++ b/include/linux/perf/arm_spe_pmu.h
@@ -21,6 +21,8 @@ struct arm_spe_pmu {
 	cpumask_t				supported_cpus;
 	struct hlist_node			hotplug_node;
 
+	u64					pmbidr_el1;
+	u64					pmsidr_el1;
 	int					irq; /* PPI */
 	u16					pmsver;
 	u16					min_period;
-- 
2.43.0