From: Madhavan Srinivasan <maddy@linux.ibm.com>
To: mpe@ellerman.id.au
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>, linuxppc-dev@lists.ozlabs.org
Subject: [PATCH v2 2/2] powerpc/perf: Power11 Performance Monitoring support
Date: Mon, 5 Feb 2024 13:28:08 +0530 [thread overview]
Message-ID: <20240205075808.174477-2-maddy@linux.ibm.com> (raw)
In-Reply-To: <20240205075808.174477-1-maddy@linux.ibm.com>
Base enablement patch to register performance monitoring
hardware support for Power11. Most of fields are copied
from power10_pmu struct for power11_pmu struct.
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
---
Changelog v1:
- Copied power10 struct for power11 with name change
arch/powerpc/perf/core-book3s.c | 2 ++
arch/powerpc/perf/internal.h | 1 +
arch/powerpc/perf/power10-pmu.c | 27 +++++++++++++++++++++++++++
3 files changed, 30 insertions(+)
diff --git a/arch/powerpc/perf/core-book3s.c b/arch/powerpc/perf/core-book3s.c
index b7ff680cde96..6f0d46c53027 100644
--- a/arch/powerpc/perf/core-book3s.c
+++ b/arch/powerpc/perf/core-book3s.c
@@ -2593,6 +2593,8 @@ static int __init init_ppc64_pmu(void)
return 0;
else if (!init_power10_pmu())
return 0;
+ else if (!init_power11_pmu())
+ return 0;
else if (!init_ppc970_pmu())
return 0;
else
diff --git a/arch/powerpc/perf/internal.h b/arch/powerpc/perf/internal.h
index 4c18b5504326..a70ac471a5a5 100644
--- a/arch/powerpc/perf/internal.h
+++ b/arch/powerpc/perf/internal.h
@@ -10,4 +10,5 @@ int __init init_power7_pmu(void);
int __init init_power8_pmu(void);
int __init init_power9_pmu(void);
int __init init_power10_pmu(void);
+int __init init_power11_pmu(void);
int __init init_generic_compat_pmu(void);
diff --git a/arch/powerpc/perf/power10-pmu.c b/arch/powerpc/perf/power10-pmu.c
index 9b5133e361a7..62a68b6b2d4b 100644
--- a/arch/powerpc/perf/power10-pmu.c
+++ b/arch/powerpc/perf/power10-pmu.c
@@ -634,3 +634,30 @@ int __init init_power10_pmu(void)
return 0;
}
+
+static struct power_pmu power11_pmu;
+
+int __init init_power11_pmu(void)
+{
+ unsigned int pvr;
+ int rc;
+
+ pvr = mfspr(SPRN_PVR);
+ if (PVR_VER(pvr) != PVR_POWER11)
+ return -ENODEV;
+
+ /* Set the PERF_REG_EXTENDED_MASK here */
+ PERF_REG_EXTENDED_MASK = PERF_REG_PMU_MASK_31;
+
+ power11_pmu = power10_pmu;
+ power11_pmu.name = "Power11";
+
+ rc = register_power_pmu(&power11_pmu);
+ if (rc)
+ return rc;
+
+ /* Tell userspace that EBB is supported */
+ cur_cpu_spec->cpu_user_features2 |= PPC_FEATURE2_EBB;
+
+ return 0;
+}
--
2.43.0
next prev parent reply other threads:[~2024-02-05 8:00 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-05 7:58 [PATCH v2 1/2] powerpc: Add Power11 architected and raw mode Madhavan Srinivasan
2024-02-05 7:58 ` Madhavan Srinivasan [this message]
2024-02-05 8:43 ` Aneesh Kumar K.V
2024-02-06 5:54 ` Madhavan Srinivasan
2024-02-07 1:54 ` Michael Ellerman
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