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Date: Mon, 7 Jun 2021 15:09:11 -0400
From: "Liang, Kan" <kan.liang@...ux.intel.com>
To: Rikard Falkeborn <rikard.falkeborn@...il.com>,
Peter Zijlstra <peterz@...radead.org>
Cc: Ingo Molnar <mingo@...hat.com>,
Arnaldo Carvalho de Melo <acme@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Jiri Olsa <jolsa@...hat.com>,
Namhyung Kim <namhyung@...nel.org>,
Thomas Gleixner <tglx@...utronix.de>,
Borislav Petkov <bp@...en8.de>, x86@...nel.org,
"H. Peter Anvin" <hpa@...or.com>, linux-perf-users@...r.kernel.org,
linux-kernel@...r.kernel.org,
Alexander Antonov <alexander.antonov@...ux.intel.com>
Subject: Re: [PATCH 1/4] perf/x86/intel/uncore: Constify intel_uncore_ops
On 6/5/2021 11:56 AM, Rikard Falkeborn wrote:
> These are not modified, so make them const to allow the compiler to put
> them in read-only memory.
For most of the cases, yes, but the ops are modified for the TGL/RKL. We
may want to create a read-only ops for the TGL/RKL as below, and make
both skl_uncore_msr_ops and rkl_uncore_msr_ops const as well.
diff --git a/arch/x86/events/intel/uncore_snb.c
b/arch/x86/events/intel/uncore_snb.c
index 0f63706..e750514 100644
--- a/arch/x86/events/intel/uncore_snb.c
+++ b/arch/x86/events/intel/uncore_snb.c
@@ -435,14 +435,22 @@ static void rkl_uncore_msr_init_box(struct
intel_uncore_box *box)
wrmsrl(SKL_UNC_PERF_GLOBAL_CTL, SNB_UNC_GLOBAL_CTL_EN);
}
+static struct intel_uncore_ops rkl_uncore_msr_ops = {
+ .init_box = rkl_uncore_msr_init_box,
+ .enable_box = skl_uncore_msr_enable_box,
+ .exit_box = skl_uncore_msr_exit_box,
+ .disable_event = snb_uncore_msr_disable_event,
+ .enable_event = snb_uncore_msr_enable_event,
+ .read_counter = uncore_msr_read_counter,
+};
+
void tgl_uncore_cpu_init(void)
{
uncore_msr_uncores = tgl_msr_uncores;
icl_uncore_cbox.num_boxes = icl_get_cbox_num();
- icl_uncore_cbox.ops = &skl_uncore_msr_ops;
- icl_uncore_clockbox.ops = &skl_uncore_msr_ops;
- snb_uncore_arb.ops = &skl_uncore_msr_ops;
- skl_uncore_msr_ops.init_box = rkl_uncore_msr_init_box;
+ icl_uncore_cbox.ops = &rkl_uncore_msr_ops;
+ icl_uncore_clockbox.ops = &rkl_uncore_msr_ops;
+ snb_uncore_arb.ops = &rkl_uncore_msr_ops;
}
static void adl_uncore_msr_init_box(struct intel_uncore_box *box)
Thanks,
Kan
>
> Signed-off-by: Rikard Falkeborn <rikard.falkeborn@...il.com>
> ---
> arch/x86/events/intel/uncore.h | 2 +-
> arch/x86/events/intel/uncore_discovery.c | 6 +--
> arch/x86/events/intel/uncore_nhmex.c | 10 ++--
> arch/x86/events/intel/uncore_snb.c | 12 ++---
> arch/x86/events/intel/uncore_snbep.c | 66 ++++++++++++------------
> 5 files changed, 48 insertions(+), 48 deletions(-)
>
> diff --git a/arch/x86/events/intel/uncore.h b/arch/x86/events/intel/uncore.h
> index 187d7287039c..83b25a7b8c27 100644
> --- a/arch/x86/events/intel/uncore.h
> +++ b/arch/x86/events/intel/uncore.h
> @@ -77,7 +77,7 @@ struct intel_uncore_type {
> struct event_constraint unconstrainted;
> struct event_constraint *constraints;
> struct intel_uncore_pmu *pmus;
> - struct intel_uncore_ops *ops;
> + const struct intel_uncore_ops *ops;
> struct uncore_event_desc *event_descs;
> struct freerunning_counters *freerunning;
> const struct attribute_group *attr_groups[4];
> diff --git a/arch/x86/events/intel/uncore_discovery.c b/arch/x86/events/intel/uncore_discovery.c
> index aba9bff95413..2b8e9a1d793e 100644
> --- a/arch/x86/events/intel/uncore_discovery.c
> +++ b/arch/x86/events/intel/uncore_discovery.c
> @@ -368,7 +368,7 @@ static void intel_generic_uncore_msr_disable_event(struct intel_uncore_box *box,
> wrmsrl(hwc->config_base, 0);
> }
>
> -static struct intel_uncore_ops generic_uncore_msr_ops = {
> +static const struct intel_uncore_ops generic_uncore_msr_ops = {
> .init_box = intel_generic_uncore_msr_init_box,
> .disable_box = intel_generic_uncore_msr_disable_box,
> .enable_box = intel_generic_uncore_msr_enable_box,
> @@ -433,7 +433,7 @@ static u64 intel_generic_uncore_pci_read_counter(struct intel_uncore_box *box,
> return count;
> }
>
> -static struct intel_uncore_ops generic_uncore_pci_ops = {
> +static const struct intel_uncore_ops generic_uncore_pci_ops = {
> .init_box = intel_generic_uncore_pci_init_box,
> .disable_box = intel_generic_uncore_pci_disable_box,
> .enable_box = intel_generic_uncore_pci_enable_box,
> @@ -516,7 +516,7 @@ static void intel_generic_uncore_mmio_disable_event(struct intel_uncore_box *box
> writel(0, box->io_addr + hwc->config_base);
> }
>
> -static struct intel_uncore_ops generic_uncore_mmio_ops = {
> +static const struct intel_uncore_ops generic_uncore_mmio_ops = {
> .init_box = intel_generic_uncore_mmio_init_box,
> .exit_box = uncore_mmio_exit_box,
> .disable_box = intel_generic_uncore_mmio_disable_box,
> diff --git a/arch/x86/events/intel/uncore_nhmex.c b/arch/x86/events/intel/uncore_nhmex.c
> index 173e2674be6e..5f7c27d7f428 100644
> --- a/arch/x86/events/intel/uncore_nhmex.c
> +++ b/arch/x86/events/intel/uncore_nhmex.c
> @@ -262,7 +262,7 @@ static void nhmex_uncore_msr_enable_event(struct intel_uncore_box *box, struct p
> .disable_event = nhmex_uncore_msr_disable_event, \
> .read_counter = uncore_msr_read_counter
>
> -static struct intel_uncore_ops nhmex_uncore_ops = {
> +static const struct intel_uncore_ops nhmex_uncore_ops = {
> NHMEX_UNCORE_OPS_COMMON_INIT(),
> .enable_event = nhmex_uncore_msr_enable_event,
> };
> @@ -413,7 +413,7 @@ static const struct attribute_group nhmex_uncore_bbox_format_group = {
> .attrs = nhmex_uncore_bbox_formats_attr,
> };
>
> -static struct intel_uncore_ops nhmex_uncore_bbox_ops = {
> +static const struct intel_uncore_ops nhmex_uncore_bbox_ops = {
> NHMEX_UNCORE_OPS_COMMON_INIT(),
> .enable_event = nhmex_bbox_msr_enable_event,
> .hw_config = nhmex_bbox_hw_config,
> @@ -490,7 +490,7 @@ static const struct attribute_group nhmex_uncore_sbox_format_group = {
> .attrs = nhmex_uncore_sbox_formats_attr,
> };
>
> -static struct intel_uncore_ops nhmex_uncore_sbox_ops = {
> +static const struct intel_uncore_ops nhmex_uncore_sbox_ops = {
> NHMEX_UNCORE_OPS_COMMON_INIT(),
> .enable_event = nhmex_sbox_msr_enable_event,
> .hw_config = nhmex_sbox_hw_config,
> @@ -916,7 +916,7 @@ static struct uncore_event_desc wsmex_uncore_mbox_events[] = {
> { /* end: all zeroes */ },
> };
>
> -static struct intel_uncore_ops nhmex_uncore_mbox_ops = {
> +static const struct intel_uncore_ops nhmex_uncore_mbox_ops = {
> NHMEX_UNCORE_OPS_COMMON_INIT(),
> .enable_event = nhmex_mbox_msr_enable_event,
> .hw_config = nhmex_mbox_hw_config,
> @@ -1179,7 +1179,7 @@ static struct uncore_event_desc nhmex_uncore_rbox_events[] = {
> { /* end: all zeroes */ },
> };
>
> -static struct intel_uncore_ops nhmex_uncore_rbox_ops = {
> +static const struct intel_uncore_ops nhmex_uncore_rbox_ops = {
> NHMEX_UNCORE_OPS_COMMON_INIT(),
> .enable_event = nhmex_rbox_msr_enable_event,
> .hw_config = nhmex_rbox_hw_config,
> diff --git a/arch/x86/events/intel/uncore_snb.c b/arch/x86/events/intel/uncore_snb.c
> index 0f63706cdadf..5826cff568f4 100644
> --- a/arch/x86/events/intel/uncore_snb.c
> +++ b/arch/x86/events/intel/uncore_snb.c
> @@ -216,7 +216,7 @@ static const struct attribute_group snb_uncore_format_group = {
> .attrs = snb_uncore_formats_attr,
> };
>
> -static struct intel_uncore_ops snb_uncore_msr_ops = {
> +static const struct intel_uncore_ops snb_uncore_msr_ops = {
> .init_box = snb_uncore_msr_init_box,
> .enable_box = snb_uncore_msr_enable_box,
> .exit_box = snb_uncore_msr_exit_box,
> @@ -341,7 +341,7 @@ void skl_uncore_cpu_init(void)
> snb_uncore_arb.ops = &skl_uncore_msr_ops;
> }
>
> -static struct intel_uncore_ops icl_uncore_msr_ops = {
> +static const struct intel_uncore_ops icl_uncore_msr_ops = {
> .disable_event = snb_uncore_msr_disable_event,
> .enable_event = snb_uncore_msr_enable_event,
> .read_counter = uncore_msr_read_counter,
> @@ -468,7 +468,7 @@ static void adl_uncore_msr_exit_box(struct intel_uncore_box *box)
> wrmsrl(ADL_UNC_PERF_GLOBAL_CTL, 0);
> }
>
> -static struct intel_uncore_ops adl_uncore_msr_ops = {
> +static const struct intel_uncore_ops adl_uncore_msr_ops = {
> .init_box = adl_uncore_msr_init_box,
> .enable_box = adl_uncore_msr_enable_box,
> .disable_box = adl_uncore_msr_disable_box,
> @@ -799,7 +799,7 @@ static struct pmu snb_uncore_imc_pmu = {
> .capabilities = PERF_PMU_CAP_NO_EXCLUDE,
> };
>
> -static struct intel_uncore_ops snb_uncore_imc_ops = {
> +static const struct intel_uncore_ops snb_uncore_imc_ops = {
> .init_box = snb_uncore_imc_init_box,
> .exit_box = uncore_mmio_exit_box,
> .enable_box = snb_uncore_imc_enable_box,
> @@ -1267,7 +1267,7 @@ static struct uncore_event_desc nhm_uncore_events[] = {
> { /* end: all zeroes */ },
> };
>
> -static struct intel_uncore_ops nhm_uncore_msr_ops = {
> +static const struct intel_uncore_ops nhm_uncore_msr_ops = {
> .disable_box = nhm_uncore_msr_disable_box,
> .enable_box = nhm_uncore_msr_enable_box,
> .disable_event = snb_uncore_msr_disable_event,
> @@ -1422,7 +1422,7 @@ static void tgl_uncore_imc_freerunning_init_box(struct intel_uncore_box *box)
> pr_warn("perf uncore: Failed to ioremap for %s.\n", type->name);
> }
>
> -static struct intel_uncore_ops tgl_uncore_imc_freerunning_ops = {
> +static const struct intel_uncore_ops tgl_uncore_imc_freerunning_ops = {
> .init_box = tgl_uncore_imc_freerunning_init_box,
> .exit_box = uncore_mmio_exit_box,
> .read_counter = uncore_mmio_read_counter,
> diff --git a/arch/x86/events/intel/uncore_snbep.c b/arch/x86/events/intel/uncore_snbep.c
> index bb6eb1e5569c..43eabe8d37dc 100644
> --- a/arch/x86/events/intel/uncore_snbep.c
> +++ b/arch/x86/events/intel/uncore_snbep.c
> @@ -775,7 +775,7 @@ static const struct attribute_group snbep_uncore_qpi_format_group = {
> __SNBEP_UNCORE_MSR_OPS_COMMON_INIT(), \
> .init_box = snbep_uncore_msr_init_box \
>
> -static struct intel_uncore_ops snbep_uncore_msr_ops = {
> +static const struct intel_uncore_ops snbep_uncore_msr_ops = {
> SNBEP_UNCORE_MSR_OPS_COMMON_INIT(),
> };
>
> @@ -786,7 +786,7 @@ static struct intel_uncore_ops snbep_uncore_msr_ops = {
> .disable_event = snbep_uncore_pci_disable_event, \
> .read_counter = snbep_uncore_pci_read_counter
>
> -static struct intel_uncore_ops snbep_uncore_pci_ops = {
> +static const struct intel_uncore_ops snbep_uncore_pci_ops = {
> SNBEP_UNCORE_PCI_OPS_COMMON_INIT(),
> .enable_event = snbep_uncore_pci_enable_event, \
> };
> @@ -1017,7 +1017,7 @@ static int snbep_cbox_hw_config(struct intel_uncore_box *box, struct perf_event
> return 0;
> }
>
> -static struct intel_uncore_ops snbep_uncore_cbox_ops = {
> +static const struct intel_uncore_ops snbep_uncore_cbox_ops = {
> SNBEP_UNCORE_MSR_OPS_COMMON_INIT(),
> .hw_config = snbep_cbox_hw_config,
> .get_constraint = snbep_cbox_get_constraint,
> @@ -1127,7 +1127,7 @@ static int snbep_pcu_hw_config(struct intel_uncore_box *box, struct perf_event *
> return 0;
> }
>
> -static struct intel_uncore_ops snbep_uncore_pcu_ops = {
> +static const struct intel_uncore_ops snbep_uncore_pcu_ops = {
> SNBEP_UNCORE_MSR_OPS_COMMON_INIT(),
> .hw_config = snbep_pcu_hw_config,
> .get_constraint = snbep_pcu_get_constraint,
> @@ -1211,7 +1211,7 @@ static void snbep_qpi_enable_event(struct intel_uncore_box *box, struct perf_eve
> pci_write_config_dword(pdev, hwc->config_base, hwc->config | SNBEP_PMON_CTL_EN);
> }
>
> -static struct intel_uncore_ops snbep_uncore_qpi_ops = {
> +static const struct intel_uncore_ops snbep_uncore_qpi_ops = {
> SNBEP_UNCORE_PCI_OPS_COMMON_INIT(),
> .enable_event = snbep_qpi_enable_event,
> .hw_config = snbep_qpi_hw_config,
> @@ -1517,11 +1517,11 @@ static void ivbep_uncore_pci_init_box(struct intel_uncore_box *box)
> .enable_event = snbep_uncore_msr_enable_event, \
> .read_counter = uncore_msr_read_counter
>
> -static struct intel_uncore_ops ivbep_uncore_msr_ops = {
> +static const struct intel_uncore_ops ivbep_uncore_msr_ops = {
> IVBEP_UNCORE_MSR_OPS_COMMON_INIT(),
> };
>
> -static struct intel_uncore_ops ivbep_uncore_pci_ops = {
> +static const struct intel_uncore_ops ivbep_uncore_pci_ops = {
> .init_box = ivbep_uncore_pci_init_box,
> .disable_box = snbep_uncore_pci_disable_box,
> .enable_box = snbep_uncore_pci_enable_box,
> @@ -1757,7 +1757,7 @@ static void ivbep_cbox_enable_event(struct intel_uncore_box *box, struct perf_ev
> wrmsrl(hwc->config_base, hwc->config | SNBEP_PMON_CTL_EN);
> }
>
> -static struct intel_uncore_ops ivbep_uncore_cbox_ops = {
> +static const struct intel_uncore_ops ivbep_uncore_cbox_ops = {
> .init_box = ivbep_uncore_msr_init_box,
> .disable_box = snbep_uncore_msr_disable_box,
> .enable_box = snbep_uncore_msr_enable_box,
> @@ -1785,7 +1785,7 @@ static struct intel_uncore_type ivbep_uncore_cbox = {
> .format_group = &ivbep_uncore_cbox_format_group,
> };
>
> -static struct intel_uncore_ops ivbep_uncore_pcu_ops = {
> +static const struct intel_uncore_ops ivbep_uncore_pcu_ops = {
> IVBEP_UNCORE_MSR_OPS_COMMON_INIT(),
> .hw_config = snbep_pcu_hw_config,
> .get_constraint = snbep_pcu_get_constraint,
> @@ -1873,7 +1873,7 @@ static u64 ivbep_uncore_irp_read_counter(struct intel_uncore_box *box, struct pe
> return count;
> }
>
> -static struct intel_uncore_ops ivbep_uncore_irp_ops = {
> +static const struct intel_uncore_ops ivbep_uncore_irp_ops = {
> .init_box = ivbep_uncore_pci_init_box,
> .disable_box = snbep_uncore_pci_disable_box,
> .enable_box = snbep_uncore_pci_enable_box,
> @@ -1893,7 +1893,7 @@ static struct intel_uncore_type ivbep_uncore_irp = {
> .format_group = &ivbep_uncore_format_group,
> };
>
> -static struct intel_uncore_ops ivbep_uncore_qpi_ops = {
> +static const struct intel_uncore_ops ivbep_uncore_qpi_ops = {
> .init_box = ivbep_uncore_pci_init_box,
> .disable_box = snbep_uncore_pci_disable_box,
> .enable_box = snbep_uncore_pci_enable_box,
> @@ -2178,7 +2178,7 @@ static int knl_cha_hw_config(struct intel_uncore_box *box,
> static void hswep_cbox_enable_event(struct intel_uncore_box *box,
> struct perf_event *event);
>
> -static struct intel_uncore_ops knl_uncore_cha_ops = {
> +static const struct intel_uncore_ops knl_uncore_cha_ops = {
> .init_box = snbep_uncore_msr_init_box,
> .disable_box = snbep_uncore_msr_disable_box,
> .enable_box = snbep_uncore_msr_enable_box,
> @@ -2272,7 +2272,7 @@ static void knl_uncore_imc_enable_event(struct intel_uncore_box *box,
> hwc->config | SNBEP_PMON_CTL_EN);
> }
>
> -static struct intel_uncore_ops knl_uncore_imc_ops = {
> +static const struct intel_uncore_ops knl_uncore_imc_ops = {
> .init_box = snbep_uncore_pci_init_box,
> .disable_box = snbep_uncore_pci_disable_box,
> .enable_box = knl_uncore_imc_enable_box,
> @@ -2581,7 +2581,7 @@ static int hswep_ubox_hw_config(struct intel_uncore_box *box, struct perf_event
> return 0;
> }
>
> -static struct intel_uncore_ops hswep_uncore_ubox_ops = {
> +static const struct intel_uncore_ops hswep_uncore_ubox_ops = {
> SNBEP_UNCORE_MSR_OPS_COMMON_INIT(),
> .hw_config = hswep_ubox_hw_config,
> .get_constraint = uncore_get_constraint,
> @@ -2741,7 +2741,7 @@ static void hswep_cbox_enable_event(struct intel_uncore_box *box,
> wrmsrl(hwc->config_base, hwc->config | SNBEP_PMON_CTL_EN);
> }
>
> -static struct intel_uncore_ops hswep_uncore_cbox_ops = {
> +static const struct intel_uncore_ops hswep_uncore_cbox_ops = {
> .init_box = snbep_uncore_msr_init_box,
> .disable_box = snbep_uncore_msr_disable_box,
> .enable_box = snbep_uncore_msr_enable_box,
> @@ -2788,7 +2788,7 @@ static void hswep_uncore_sbox_msr_init_box(struct intel_uncore_box *box)
> }
> }
>
> -static struct intel_uncore_ops hswep_uncore_sbox_msr_ops = {
> +static const struct intel_uncore_ops hswep_uncore_sbox_msr_ops = {
> __SNBEP_UNCORE_MSR_OPS_COMMON_INIT(),
> .init_box = hswep_uncore_sbox_msr_init_box
> };
> @@ -2836,7 +2836,7 @@ static int hswep_pcu_hw_config(struct intel_uncore_box *box, struct perf_event *
> return 0;
> }
>
> -static struct intel_uncore_ops hswep_uncore_pcu_ops = {
> +static const struct intel_uncore_ops hswep_uncore_pcu_ops = {
> SNBEP_UNCORE_MSR_OPS_COMMON_INIT(),
> .hw_config = hswep_pcu_hw_config,
> .get_constraint = snbep_pcu_get_constraint,
> @@ -2941,7 +2941,7 @@ static u64 hswep_uncore_irp_read_counter(struct intel_uncore_box *box, struct pe
> return count;
> }
>
> -static struct intel_uncore_ops hswep_uncore_irp_ops = {
> +static const struct intel_uncore_ops hswep_uncore_irp_ops = {
> .init_box = snbep_uncore_pci_init_box,
> .disable_box = snbep_uncore_pci_disable_box,
> .enable_box = snbep_uncore_pci_enable_box,
> @@ -3611,7 +3611,7 @@ static int skx_cha_hw_config(struct intel_uncore_box *box, struct perf_event *ev
> return 0;
> }
>
> -static struct intel_uncore_ops skx_uncore_chabox_ops = {
> +static const struct intel_uncore_ops skx_uncore_chabox_ops = {
> /* There is no frz_en for chabox ctl */
> .init_box = ivbep_uncore_msr_init_box,
> .disable_box = snbep_uncore_msr_disable_box,
> @@ -3673,7 +3673,7 @@ static void skx_iio_enable_event(struct intel_uncore_box *box,
> wrmsrl(hwc->config_base, hwc->config | SNBEP_PMON_CTL_EN);
> }
>
> -static struct intel_uncore_ops skx_uncore_iio_ops = {
> +static const struct intel_uncore_ops skx_uncore_iio_ops = {
> .init_box = ivbep_uncore_msr_init_box,
> .disable_box = snbep_uncore_msr_disable_box,
> .enable_box = snbep_uncore_msr_enable_box,
> @@ -3931,7 +3931,7 @@ static struct uncore_event_desc skx_uncore_iio_freerunning_events[] = {
> { /* end: all zeroes */ },
> };
>
> -static struct intel_uncore_ops skx_uncore_iio_freerunning_ops = {
> +static const struct intel_uncore_ops skx_uncore_iio_freerunning_ops = {
> .read_counter = uncore_msr_read_counter,
> .hw_config = uncore_freerunning_hw_config,
> };
> @@ -4006,7 +4006,7 @@ static struct attribute_group skx_uncore_pcu_format_group = {
> .attrs = skx_uncore_pcu_formats_attr,
> };
>
> -static struct intel_uncore_ops skx_uncore_pcu_ops = {
> +static const struct intel_uncore_ops skx_uncore_pcu_ops = {
> IVBEP_UNCORE_MSR_OPS_COMMON_INIT(),
> .hw_config = hswep_pcu_hw_config,
> .get_constraint = snbep_pcu_get_constraint,
> @@ -4105,7 +4105,7 @@ static void skx_upi_uncore_pci_init_box(struct intel_uncore_box *box)
> pci_write_config_dword(pdev, SKX_UPI_PCI_PMON_BOX_CTL, IVBEP_PMON_BOX_CTL_INT);
> }
>
> -static struct intel_uncore_ops skx_upi_uncore_pci_ops = {
> +static const struct intel_uncore_ops skx_upi_uncore_pci_ops = {
> .init_box = skx_upi_uncore_pci_init_box,
> .disable_box = snbep_uncore_pci_disable_box,
> .enable_box = snbep_uncore_pci_enable_box,
> @@ -4136,7 +4136,7 @@ static void skx_m2m_uncore_pci_init_box(struct intel_uncore_box *box)
> pci_write_config_dword(pdev, SKX_M2M_PCI_PMON_BOX_CTL, IVBEP_PMON_BOX_CTL_INT);
> }
>
> -static struct intel_uncore_ops skx_m2m_uncore_pci_ops = {
> +static const struct intel_uncore_ops skx_m2m_uncore_pci_ops = {
> .init_box = skx_m2m_uncore_pci_init_box,
> .disable_box = snbep_uncore_pci_disable_box,
> .enable_box = snbep_uncore_pci_enable_box,
> @@ -4373,7 +4373,7 @@ static void snr_cha_enable_event(struct intel_uncore_box *box,
> wrmsrl(hwc->config_base, hwc->config | SNBEP_PMON_CTL_EN);
> }
>
> -static struct intel_uncore_ops snr_uncore_chabox_ops = {
> +static const struct intel_uncore_ops snr_uncore_chabox_ops = {
> .init_box = ivbep_uncore_msr_init_box,
> .disable_box = snbep_uncore_msr_disable_box,
> .enable_box = snbep_uncore_msr_enable_box,
> @@ -4560,7 +4560,7 @@ static int snr_pcu_hw_config(struct intel_uncore_box *box, struct perf_event *ev
> return 0;
> }
>
> -static struct intel_uncore_ops snr_uncore_pcu_ops = {
> +static const struct intel_uncore_ops snr_uncore_pcu_ops = {
> IVBEP_UNCORE_MSR_OPS_COMMON_INIT(),
> .hw_config = snr_pcu_hw_config,
> .get_constraint = snbep_pcu_get_constraint,
> @@ -4660,7 +4660,7 @@ static void snr_m2m_uncore_pci_init_box(struct intel_uncore_box *box)
> pci_write_config_dword(pdev, box_ctl, IVBEP_PMON_BOX_CTL_INT);
> }
>
> -static struct intel_uncore_ops snr_m2m_uncore_pci_ops = {
> +static const struct intel_uncore_ops snr_m2m_uncore_pci_ops = {
> .init_box = snr_m2m_uncore_pci_init_box,
> .disable_box = snbep_uncore_pci_disable_box,
> .enable_box = snbep_uncore_pci_enable_box,
> @@ -4706,7 +4706,7 @@ static void snr_uncore_pci_enable_event(struct intel_uncore_box *box, struct per
> pci_write_config_dword(pdev, hwc->config_base + 4, (u32)(hwc->config >> 32));
> }
>
> -static struct intel_uncore_ops snr_pcie3_uncore_pci_ops = {
> +static const struct intel_uncore_ops snr_pcie3_uncore_pci_ops = {
> .init_box = snr_m2m_uncore_pci_init_box,
> .disable_box = snbep_uncore_pci_disable_box,
> .enable_box = snbep_uncore_pci_enable_box,
> @@ -4884,7 +4884,7 @@ static void snr_uncore_mmio_disable_event(struct intel_uncore_box *box,
> writel(hwc->config, box->io_addr + hwc->config_base);
> }
>
> -static struct intel_uncore_ops snr_uncore_mmio_ops = {
> +static const struct intel_uncore_ops snr_uncore_mmio_ops = {
> .init_box = snr_uncore_mmio_init_box,
> .exit_box = uncore_mmio_exit_box,
> .disable_box = snr_uncore_mmio_disable_box,
> @@ -4948,7 +4948,7 @@ static struct uncore_event_desc snr_uncore_imc_freerunning_events[] = {
> { /* end: all zeroes */ },
> };
>
> -static struct intel_uncore_ops snr_uncore_imc_freerunning_ops = {
> +static const struct intel_uncore_ops snr_uncore_imc_freerunning_ops = {
> .init_box = snr_uncore_mmio_init_box,
> .exit_box = uncore_mmio_exit_box,
> .read_counter = uncore_mmio_read_counter,
> @@ -5005,7 +5005,7 @@ static int icx_cha_hw_config(struct intel_uncore_box *box, struct perf_event *ev
> return 0;
> }
>
> -static struct intel_uncore_ops icx_uncore_chabox_ops = {
> +static const struct intel_uncore_ops icx_uncore_chabox_ops = {
> .init_box = ivbep_uncore_msr_init_box,
> .disable_box = snbep_uncore_msr_disable_box,
> .enable_box = snbep_uncore_msr_enable_box,
> @@ -5406,7 +5406,7 @@ static void icx_uncore_imc_init_box(struct intel_uncore_box *box)
> __snr_uncore_mmio_init_box(box, box_ctl, mem_offset);
> }
>
> -static struct intel_uncore_ops icx_uncore_mmio_ops = {
> +static const struct intel_uncore_ops icx_uncore_mmio_ops = {
> .init_box = icx_uncore_imc_init_box,
> .exit_box = uncore_mmio_exit_box,
> .disable_box = snr_uncore_mmio_disable_box,
> @@ -5476,7 +5476,7 @@ static void icx_uncore_imc_freerunning_init_box(struct intel_uncore_box *box)
> __snr_uncore_mmio_init_box(box, uncore_mmio_box_ctl(box), mem_offset);
> }
>
> -static struct intel_uncore_ops icx_uncore_imc_freerunning_ops = {
> +static const struct intel_uncore_ops icx_uncore_imc_freerunning_ops = {
> .init_box = icx_uncore_imc_freerunning_init_box,
> .exit_box = uncore_mmio_exit_box,
> .read_counter = uncore_mmio_read_counter,
>
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