RE: [PATCH v4 2/2] perf: arm_cspmu: Add support for NVIDIA SCF and MCF attribute

From: Besar Wicaksono
Date: Tue Sep 27 2022 - 21:38:59 EST

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> -----Original Message-----
> From: Suzuki K Poulose <suzuki.poulose@xxxxxxx>
> Sent: Tuesday, September 27, 2022 6:43 AM
> To: Besar Wicaksono <bwicaksono@xxxxxxxxxx>; robin.murphy@xxxxxxx;
> catalin.marinas@xxxxxxx; will@xxxxxxxxxx; mark.rutland@xxxxxxx
> Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx;
> linux-tegra@xxxxxxxxxxxxxxx; sudeep.holla@xxxxxxx;
> thanu.rangarajan@xxxxxxx; Michael.Williams@xxxxxxx; Thierry Reding
> <treding@xxxxxxxxxx>; Jonathan Hunter <jonathanh@xxxxxxxxxx>; Vikram
> Sethi <vsethi@xxxxxxxxxx>; mathieu.poirier@xxxxxxxxxx;
> mike.leach@xxxxxxxxxx; leo.yan@xxxxxxxxxx
> Subject: Re: [PATCH v4 2/2] perf: arm_cspmu: Add support for NVIDIA SCF
> and MCF attribute
>
> External email: Use caution opening links or attachments
>
>
> On 14/08/2022 19:23, Besar Wicaksono wrote:
> > Add support for NVIDIA System Cache Fabric (SCF) and Memory Control
> > Fabric (MCF) PMU attributes for CoreSight PMU implementation in
> > NVIDIA devices.
> >
> > Signed-off-by: Besar Wicaksono <bwicaksono@xxxxxxxxxx>
> > ---
> > Documentation/admin-guide/perf/index.rst | 1 +
> > Documentation/admin-guide/perf/nvidia-pmu.rst | 120 ++++++
> > drivers/perf/arm_cspmu/Makefile | 3 +-
> > drivers/perf/arm_cspmu/arm_cspmu.c | 7 +
> > drivers/perf/arm_cspmu/nvidia_cspmu.c | 367
> ++++++++++++++++++
> > drivers/perf/arm_cspmu/nvidia_cspmu.h | 17 +
> > 6 files changed, 514 insertions(+), 1 deletion(-)
> > create mode 100644 Documentation/admin-guide/perf/nvidia-pmu.rst
> > create mode 100644 drivers/perf/arm_cspmu/nvidia_cspmu.c
> > create mode 100644 drivers/perf/arm_cspmu/nvidia_cspmu.h
> >
> > diff --git a/Documentation/admin-guide/perf/index.rst
> b/Documentation/admin-guide/perf/index.rst
> > index 69b23f087c05..cf05fed1f67f 100644
> > --- a/Documentation/admin-guide/perf/index.rst
> > +++ b/Documentation/admin-guide/perf/index.rst
> > @@ -17,3 +17,4 @@ Performance monitor support
> > xgene-pmu
> > arm_dsu_pmu
> > thunderx2-pmu
> > + nvidia-pmu
> > diff --git a/Documentation/admin-guide/perf/nvidia-pmu.rst
> b/Documentation/admin-guide/perf/nvidia-pmu.rst
> > new file mode 100644
> > index 000000000000..c41b93965824
> > --- /dev/null
> > +++ b/Documentation/admin-guide/perf/nvidia-pmu.rst
> > @@ -0,0 +1,120 @@
> >
> +=========================================================
> > +NVIDIA Tegra SoC Uncore Performance Monitoring Unit (PMU)
> >
> +=========================================================
> > +
> > +The NVIDIA Tegra SoC includes various system PMUs to measure key
> performance
> > +metrics like memory bandwidth, latency, and utilization:
> > +
> > +* Scalable Coherency Fabric (SCF)
> > +* Memory Controller Fabric (MCF) GPU physical interface
> > +* MCF GPU virtual interface
> > +* MCF NVLINK interface
> > +* MCF PCIE interface
> > +
> > +PMU Driver
> > +----------
> > +
> > +The PMUs in this document are based on ARM CoreSight PMU
> Architecture as
> > +described in document: ARM IHI 0091. Since this is a standard
> architecture, the
> > +PMUs are managed by a common driver "arm-cs-arch-pmu". This driver
> describes
> > +the available events and configuration of each PMU in sysfs. Please see
> the
> > +sections below to get the sysfs path of each PMU. Like other uncore PMU
> driver,
> > +the driver provides "cpumask" sysfs attribute to show the CPU id used to
> handle
> > +the PMU event. There is also "associated_cpus" sysfs attribute, which
> contains a
> > +list of CPUs associated with the PMU instance.
> > +
> > +SCF PMU
> > +-------
> > +
> > +The SCF PMU monitors system level cache events, CPU traffic, and
> > +strongly-ordered PCIE traffic to local/remote memory.
> > +
> > +The events and configuration options of this PMU device are described in
> sysfs,
> > +see /sys/bus/event_sources/devices/nvidia_scf_pmu_<socket-id>.
> > +
> > +Example usage::
> > +
> > + perf stat -a -e nvidia_scf_pmu_0/config=0x0/
> > +
> > +This will count the events in socket 0.
> > +
> > +MCF GPU Physical PMU
> > +--------------------
> > +
> > +The MCF GPU physical PMU monitors ATS translated traffic from GPU to
> > +local/remote memory via Nvlink C2C.
> > +
> > +The events and configuration options of this PMU device are described in
> sysfs,
> > +see /sys/bus/event_sources/devices/nvidia_mcf_gpu_pmu_<socket-id>.
> > +
> > +Multiple GPUs can be connected to the SoC. The user can use "gpu"
> bitmap
> > +parameter to select the GPU(s) to monitor, i.e. "gpu=0xF" corresponds to
> GPU 0
> > +to 3. /sys/bus/event_sources/devices/nvidia_mcf_gpu_pmu_<socket-
> id>/format/gpu
> > +shows the valid bits that can be set in the "gpu" parameter.
> > +
> > +Example usage::
> > +
> > + perf stat -a -e nvidia_mcf_gpu_pmu_0/config=0x0,gpu=0x3/
> > +
> > +This will count the events on GPU 0 and 1 that are connected to SoC in
> socket 0.
> > +
> > +MCF GPU Virtual PMU
> > +-------------------
> > +
> > +The MCF GPU virtual PMU monitors SMMU inline translated traffic (as
> opposed to
> > +ATS) from GPU to local/remote memory via Nvlink C2C.
> > +
> > +The events and configuration options of this PMU device are described in
> sysfs,
> > +see /sys/bus/event_sources/devices/nvidia_mcf_gpuvir_pmu_<socket-
> id>.
> > +
> > +Multiple GPUs can be connected to the SoC. The user can use "gpu"
> bitmap
> > +parameter to select the GPU(s) to monitor, i.e. "gpu=0xF" corresponds to
> GPU 0
> > +to 3. /sys/bus/event_sources/devices/nvidia_mcf_gpuvir_pmu_<socket-
> id>/format/gpu
> > +shows the valid bits that can be set in the "gpu" parameter.
> > +
> > +Example usage::
> > +
> > + perf stat -a -e nvidia_mcf_gpuvir_pmu_0/config=0x0,gpu=0x3/
> > +
> > +This will count the events on GPU 0 and 1 that are connected to SoC in
> socket 0.
> > +
> > +MCF NVLINK PMU
> > +--------------
> > +
> > +The MCF NVLINK PMU monitors I/O coherent traffic from external socket
> to local
> > +memory.
> > +
> > +The events and configuration options of this PMU device are described in
> sysfs,
> > +see /sys/bus/event_sources/devices/nvidia_mcf_nvlink_pmu_<socket-
> id>.
> > +
> > +Each SoC socket can be connected to one or more sockets via NVLINK.
> The user can
> > +use "rem_socket" bitmap parameter to select the remote socket(s) to
> monitor,
> > +i.e. "rem_socket=0xE" corresponds to socket 1 to 3.
> > +/sys/bus/event_sources/devices/nvidia_mcf_nvlink_pmu_<socket-
> id>/format/rem_socket
> > +shows the valid bits that can be set in the "rem_socket" parameter.
> > +
> > +Example usage::
> > +
> > + perf stat -a -e nvidia_mcf_nvlink_pmu_0/config=0x0,rem_socket=0x6/
> > +
> > +This will count the events from remote socket 1 and 2 to socket 0.
> > +
> > +MCF PCIE PMU
> > +------------
> > +
> > +The MCF PCIE PMU monitors traffic from PCIE root ports to local/remote
> memory.
> > +
> > +The events and configuration options of this PMU device are described in
> sysfs,
> > +see /sys/bus/event_sources/devices/nvidia_mcf_pcie_pmu_<socket-
> id>.
> > +
> > +Each SoC socket can support multiple root ports. The user can use
> > +"root_port" bitmap parameter to select the port(s) to monitor, i.e.
> > +"root_port=0xF" corresponds to root port 0 to 3.
> > +/sys/bus/event_sources/devices/nvidia_mcf_pcie_pmu_<socket-
> id>/format/root_port
> > +shows the valid bits that can be set in the "root_port" parameter.
> > +
> > +Example usage::
> > +
> > + perf stat -a -e nvidia_mcf_pcie_pmu_0/config=0x0,root_port=0x3/
> > +
> > +This will count the events from root port 0 and 1 of socket 0.
> > diff --git a/drivers/perf/arm_cspmu/Makefile
> b/drivers/perf/arm_cspmu/Makefile
> > index cdc3455f74d8..1b586064bd77 100644
> > --- a/drivers/perf/arm_cspmu/Makefile
> > +++ b/drivers/perf/arm_cspmu/Makefile
> > @@ -3,4 +3,5 @@
> > # SPDX-License-Identifier: GPL-2.0
> >
> > obj-$(CONFIG_ARM_CORESIGHT_PMU_ARCH_SYSTEM_PMU) += \
> > - arm_cspmu.o
> > + arm_cspmu.o \
> > + nvidia_cspmu.o
> > diff --git a/drivers/perf/arm_cspmu/arm_cspmu.c
> b/drivers/perf/arm_cspmu/arm_cspmu.c
> > index 410876f86eb0..7a0beb515e53 100644
> > --- a/drivers/perf/arm_cspmu/arm_cspmu.c
> > +++ b/drivers/perf/arm_cspmu/arm_cspmu.c
> > @@ -31,6 +31,7 @@
> > #include <acpi/processor.h>
> >
> > #include "arm_cspmu.h"
> > +#include "nvidia_cspmu.h"
> >
> > #define PMUNAME "arm_cspmu"
> > #define DRVNAME "arm-cs-arch-pmu"
> > @@ -118,6 +119,9 @@ static_assert(
> > ops->callback = arm_cspmu_ ## callback; \
> > } while (0)
> >
> > +/* JEDEC-assigned JEP106 identification code */
> > +#define ARM_CSPMU_IMPL_ID_NVIDIA 0x36B
> > +
> > static unsigned long arm_cspmu_cpuhp_state;
> >
> > /*
> > @@ -369,6 +373,9 @@ struct impl_match {
> > };
> >
> > static const struct impl_match impl_match[] = {
> > + { .pmiidr = ARM_CSPMU_IMPL_ID_NVIDIA,
> > + .mask = ARM_CSPMU_PMIIDR_IMPLEMENTER,
> > + .impl_init_ops = nv_cspmu_init_ops },
>
> Super minor nit: Coding style. Could we use :
>
> {
> .field = value,
> ...
> },
>
> > {}
> > };
> >
> > diff --git a/drivers/perf/arm_cspmu/nvidia_cspmu.c
> b/drivers/perf/arm_cspmu/nvidia_cspmu.c
> > new file mode 100644
> > index 000000000000..261f20680bc1
> > --- /dev/null
> > +++ b/drivers/perf/arm_cspmu/nvidia_cspmu.c
> > @@ -0,0 +1,367 @@
> > +// SPDX-License-Identifier: GPL-2.0
> > +/*
> > + * Copyright (c) 2022, NVIDIA CORPORATION & AFFILIATES.
> > + *
> > + */
> > +
> > +/* Support for NVIDIA specific attributes. */
> > +
> > +#include "nvidia_cspmu.h"
> > +
> > +#define NV_MCF_PCIE_PORT_COUNT 10ULL
> > +#define NV_MCF_PCIE_FILTER_ID_MASK
> GENMASK_ULL(NV_MCF_PCIE_PORT_COUNT - 1, 0)
> > +
> > +#define NV_MCF_GPU_PORT_COUNT 2ULL
> > +#define NV_MCF_GPU_FILTER_ID_MASK
> GENMASK_ULL(NV_MCF_GPU_PORT_COUNT - 1, 0)
> > +
> > +#define NV_MCF_NVL_PORT_COUNT 4ULL
> > +#define NV_MCF_NVL_FILTER_ID_MASK
> GENMASK_ULL(NV_MCF_NVL_PORT_COUNT - 1, 0)
> > +
> > +#define NV_SCF_MCF_PRODID_MASK GENMASK(31, 0)
> > +
> > +#define NV_FORMAT_NAME_GENERIC 0
> > +
> > +#define to_nv_cspmu_ctx(cspmu) ((struct nv_cspmu_ctx *)(cspmu-
> >impl.ctx))
> > +
> > +#define NV_CSPMU_EVENT_ATTR_4_INNER(_pref, _num, _suff, _config)
> \
> > + ARM_CSPMU_EVENT_ATTR(_pref##_num##_suff, _config)
> > +
> > +#define NV_CSPMU_EVENT_ATTR_4(_pref, _suff, _config) \
> > + NV_CSPMU_EVENT_ATTR_4_INNER(_pref, _0_, _suff, _config), \
> > + NV_CSPMU_EVENT_ATTR_4_INNER(_pref, _1_, _suff, _config + 1), \
> > + NV_CSPMU_EVENT_ATTR_4_INNER(_pref, _2_, _suff, _config + 2), \
> > + NV_CSPMU_EVENT_ATTR_4_INNER(_pref, _3_, _suff, _config + 3)
> > +
> > +struct nv_cspmu_ctx {
> > + const char *name;
> > + u32 filter_mask;
> > + struct attribute **event_attr;
> > + struct attribute **format_attr;
> > +};
> > +
> > +static struct attribute *scf_pmu_event_attrs[] = {
> > + ARM_CSPMU_EVENT_ATTR(bus_cycles, 0x1d),
> > +
> > + ARM_CSPMU_EVENT_ATTR(scf_cache_allocate, 0xF0),
> > + ARM_CSPMU_EVENT_ATTR(scf_cache_refill, 0xF1),
> > + ARM_CSPMU_EVENT_ATTR(scf_cache, 0xF2),
> > + ARM_CSPMU_EVENT_ATTR(scf_cache_wb, 0xF3),
> > +
> > + NV_CSPMU_EVENT_ATTR_4(socket, rd_data, 0x101),
> > + NV_CSPMU_EVENT_ATTR_4(socket, dl_rsp, 0x105),
> > + NV_CSPMU_EVENT_ATTR_4(socket, wb_data, 0x109),
> > + NV_CSPMU_EVENT_ATTR_4(socket, ev_rsp, 0x10d),
> > + NV_CSPMU_EVENT_ATTR_4(socket, prb_data, 0x111),
> > +
> > + NV_CSPMU_EVENT_ATTR_4(socket, rd_outstanding, 0x115),
> > + NV_CSPMU_EVENT_ATTR_4(socket, dl_outstanding, 0x119),
> > + NV_CSPMU_EVENT_ATTR_4(socket, wb_outstanding, 0x11d),
> > + NV_CSPMU_EVENT_ATTR_4(socket, wr_outstanding, 0x121),
> > + NV_CSPMU_EVENT_ATTR_4(socket, ev_outstanding, 0x125),
> > + NV_CSPMU_EVENT_ATTR_4(socket, prb_outstanding, 0x129),
> > +
> > + NV_CSPMU_EVENT_ATTR_4(socket, rd_access, 0x12d),
> > + NV_CSPMU_EVENT_ATTR_4(socket, dl_access, 0x131),
> > + NV_CSPMU_EVENT_ATTR_4(socket, wb_access, 0x135),
> > + NV_CSPMU_EVENT_ATTR_4(socket, wr_access, 0x139),
> > + NV_CSPMU_EVENT_ATTR_4(socket, ev_access, 0x13d),
> > + NV_CSPMU_EVENT_ATTR_4(socket, prb_access, 0x141),
> > +
> > + NV_CSPMU_EVENT_ATTR_4(ocu, gmem_rd_data, 0x145),
> > + NV_CSPMU_EVENT_ATTR_4(ocu, gmem_rd_access, 0x149),
> > + NV_CSPMU_EVENT_ATTR_4(ocu, gmem_wb_access, 0x14d),
> > + NV_CSPMU_EVENT_ATTR_4(ocu, gmem_rd_outstanding, 0x151),
> > + NV_CSPMU_EVENT_ATTR_4(ocu, gmem_wr_outstanding, 0x155),
> > +
> > + NV_CSPMU_EVENT_ATTR_4(ocu, rem_rd_data, 0x159),
> > + NV_CSPMU_EVENT_ATTR_4(ocu, rem_rd_access, 0x15d),
> > + NV_CSPMU_EVENT_ATTR_4(ocu, rem_wb_access, 0x161),
> > + NV_CSPMU_EVENT_ATTR_4(ocu, rem_rd_outstanding, 0x165),
> > + NV_CSPMU_EVENT_ATTR_4(ocu, rem_wr_outstanding, 0x169),
> > +
> > + ARM_CSPMU_EVENT_ATTR(gmem_rd_data, 0x16d),
> > + ARM_CSPMU_EVENT_ATTR(gmem_rd_access, 0x16e),
> > + ARM_CSPMU_EVENT_ATTR(gmem_rd_outstanding, 0x16f),
> > + ARM_CSPMU_EVENT_ATTR(gmem_dl_rsp, 0x170),
> > + ARM_CSPMU_EVENT_ATTR(gmem_dl_access, 0x171),
> > + ARM_CSPMU_EVENT_ATTR(gmem_dl_outstanding, 0x172),
> > + ARM_CSPMU_EVENT_ATTR(gmem_wb_data, 0x173),
> > + ARM_CSPMU_EVENT_ATTR(gmem_wb_access, 0x174),
> > + ARM_CSPMU_EVENT_ATTR(gmem_wb_outstanding, 0x175),
> > + ARM_CSPMU_EVENT_ATTR(gmem_ev_rsp, 0x176),
> > + ARM_CSPMU_EVENT_ATTR(gmem_ev_access, 0x177),
> > + ARM_CSPMU_EVENT_ATTR(gmem_ev_outstanding, 0x178),
> > + ARM_CSPMU_EVENT_ATTR(gmem_wr_data, 0x179),
> > + ARM_CSPMU_EVENT_ATTR(gmem_wr_outstanding, 0x17a),
> > + ARM_CSPMU_EVENT_ATTR(gmem_wr_access, 0x17b),
> > +
> > + NV_CSPMU_EVENT_ATTR_4(socket, wr_data, 0x17c),
> > +
> > + NV_CSPMU_EVENT_ATTR_4(ocu, gmem_wr_data, 0x180),
> > + NV_CSPMU_EVENT_ATTR_4(ocu, gmem_wb_data, 0x184),
> > + NV_CSPMU_EVENT_ATTR_4(ocu, gmem_wr_access, 0x188),
> > + NV_CSPMU_EVENT_ATTR_4(ocu, gmem_wb_outstanding, 0x18c),
> > +
> > + NV_CSPMU_EVENT_ATTR_4(ocu, rem_wr_data, 0x190),
> > + NV_CSPMU_EVENT_ATTR_4(ocu, rem_wb_data, 0x194),
> > + NV_CSPMU_EVENT_ATTR_4(ocu, rem_wr_access, 0x198),
> > + NV_CSPMU_EVENT_ATTR_4(ocu, rem_wb_outstanding, 0x19c),
> > +
> > + ARM_CSPMU_EVENT_ATTR(gmem_wr_total_bytes, 0x1a0),
> > + ARM_CSPMU_EVENT_ATTR(remote_socket_wr_total_bytes,
> 0x1a1),
> > + ARM_CSPMU_EVENT_ATTR(remote_socket_rd_data, 0x1a2),
> > + ARM_CSPMU_EVENT_ATTR(remote_socket_rd_outstanding,
> 0x1a3),
> > + ARM_CSPMU_EVENT_ATTR(remote_socket_rd_access, 0x1a4),
> > +
> > + ARM_CSPMU_EVENT_ATTR(cmem_rd_data, 0x1a5),
> > + ARM_CSPMU_EVENT_ATTR(cmem_rd_access, 0x1a6),
> > + ARM_CSPMU_EVENT_ATTR(cmem_rd_outstanding, 0x1a7),
> > + ARM_CSPMU_EVENT_ATTR(cmem_dl_rsp, 0x1a8),
> > + ARM_CSPMU_EVENT_ATTR(cmem_dl_access, 0x1a9),
> > + ARM_CSPMU_EVENT_ATTR(cmem_dl_outstanding, 0x1aa),
> > + ARM_CSPMU_EVENT_ATTR(cmem_wb_data, 0x1ab),
> > + ARM_CSPMU_EVENT_ATTR(cmem_wb_access, 0x1ac),
> > + ARM_CSPMU_EVENT_ATTR(cmem_wb_outstanding, 0x1ad),
> > + ARM_CSPMU_EVENT_ATTR(cmem_ev_rsp, 0x1ae),
> > + ARM_CSPMU_EVENT_ATTR(cmem_ev_access, 0x1af),
> > + ARM_CSPMU_EVENT_ATTR(cmem_ev_outstanding, 0x1b0),
> > + ARM_CSPMU_EVENT_ATTR(cmem_wr_data, 0x1b1),
> > + ARM_CSPMU_EVENT_ATTR(cmem_wr_outstanding, 0x1b2),
> > +
> > + NV_CSPMU_EVENT_ATTR_4(ocu, cmem_rd_data, 0x1b3),
> > + NV_CSPMU_EVENT_ATTR_4(ocu, cmem_rd_access, 0x1b7),
> > + NV_CSPMU_EVENT_ATTR_4(ocu, cmem_wb_access, 0x1bb),
> > + NV_CSPMU_EVENT_ATTR_4(ocu, cmem_rd_outstanding, 0x1bf),
> > + NV_CSPMU_EVENT_ATTR_4(ocu, cmem_wr_outstanding, 0x1c3),
> > +
> > + ARM_CSPMU_EVENT_ATTR(ocu_prb_access, 0x1c7),
> > + ARM_CSPMU_EVENT_ATTR(ocu_prb_data, 0x1c8),
> > + ARM_CSPMU_EVENT_ATTR(ocu_prb_outstanding, 0x1c9),
> > +
> > + ARM_CSPMU_EVENT_ATTR(cmem_wr_access, 0x1ca),
> > +
> > + NV_CSPMU_EVENT_ATTR_4(ocu, cmem_wr_access, 0x1cb),
> > + NV_CSPMU_EVENT_ATTR_4(ocu, cmem_wb_data, 0x1cf),
> > + NV_CSPMU_EVENT_ATTR_4(ocu, cmem_wr_data, 0x1d3),
> > + NV_CSPMU_EVENT_ATTR_4(ocu, cmem_wb_outstanding, 0x1d7),
> > +
> > + ARM_CSPMU_EVENT_ATTR(cmem_wr_total_bytes, 0x1db),
> > +
> > + ARM_CSPMU_EVENT_ATTR(cycles,
> ARM_CSPMU_EVT_CYCLES_DEFAULT),
> > + NULL,
> > +};
> > +
> > +static struct attribute *mcf_pmu_event_attrs[] = {
> > + ARM_CSPMU_EVENT_ATTR(rd_bytes_loc, 0x0),
> > + ARM_CSPMU_EVENT_ATTR(rd_bytes_rem, 0x1),
> > + ARM_CSPMU_EVENT_ATTR(wr_bytes_loc, 0x2),
> > + ARM_CSPMU_EVENT_ATTR(wr_bytes_rem, 0x3),
> > + ARM_CSPMU_EVENT_ATTR(total_bytes_loc, 0x4),
> > + ARM_CSPMU_EVENT_ATTR(total_bytes_rem, 0x5),
> > + ARM_CSPMU_EVENT_ATTR(rd_req_loc, 0x6),
> > + ARM_CSPMU_EVENT_ATTR(rd_req_rem, 0x7),
> > + ARM_CSPMU_EVENT_ATTR(wr_req_loc, 0x8),
> > + ARM_CSPMU_EVENT_ATTR(wr_req_rem, 0x9),
> > + ARM_CSPMU_EVENT_ATTR(total_req_loc, 0xa),
> > + ARM_CSPMU_EVENT_ATTR(total_req_rem, 0xb),
> > + ARM_CSPMU_EVENT_ATTR(rd_cum_outs_loc, 0xc),
> > + ARM_CSPMU_EVENT_ATTR(rd_cum_outs_rem, 0xd),
> > + ARM_CSPMU_EVENT_ATTR(cycles,
> ARM_CSPMU_EVT_CYCLES_DEFAULT),
> > + NULL,
> > +};
> > +
> > +static struct attribute *generic_pmu_event_attrs[] = {
> > + ARM_CSPMU_EVENT_ATTR(cycles,
> ARM_CSPMU_EVT_CYCLES_DEFAULT),
> > + NULL,
> > +};
> > +
> > +static struct attribute *scf_pmu_format_attrs[] = {
> > + ARM_CSPMU_FORMAT_EVENT_ATTR,
> > + NULL,
> > +};
> > +
> > +static struct attribute *mcf_pcie_pmu_format_attrs[] = {
> > + ARM_CSPMU_FORMAT_EVENT_ATTR,
> > + ARM_CSPMU_FORMAT_ATTR(root_port, "config1:0-9"),
> > + NULL,
> > +};
> > +
> > +static struct attribute *mcf_gpu_pmu_format_attrs[] = {
> > + ARM_CSPMU_FORMAT_EVENT_ATTR,
> > + ARM_CSPMU_FORMAT_ATTR(gpu, "config1:0-1"),
> > + NULL,
> > +};
> > +
> > +static struct attribute *mcf_nvlink_pmu_format_attrs[] = {
> > + ARM_CSPMU_FORMAT_EVENT_ATTR,
> > + ARM_CSPMU_FORMAT_ATTR(rem_socket, "config1:0-3"),
> > + NULL,
> > +};
> > +
> > +static struct attribute *generic_pmu_format_attrs[] = {
> > + ARM_CSPMU_FORMAT_EVENT_ATTR,
> > + ARM_CSPMU_FORMAT_FILTER_ATTR,
> > + NULL,
> > +};
> > +
> > +static struct attribute **
> > +nv_cspmu_get_event_attrs(const struct arm_cspmu *cspmu)
> > +{
> > + const struct nv_cspmu_ctx *ctx = to_nv_cspmu_ctx(cspmu);
> > +
> > + return ctx->event_attr;
> > +}
> > +
> > +static struct attribute **
> > +nv_cspmu_get_format_attrs(const struct arm_cspmu *cspmu)
> > +{
> > + const struct nv_cspmu_ctx *ctx = to_nv_cspmu_ctx(cspmu);
> > +
> > + return ctx->format_attr;
> > +}
> > +
> > +static const char *
> > +nv_cspmu_get_name(const struct arm_cspmu *cspmu)
> > +{
> > + const struct nv_cspmu_ctx *ctx = to_nv_cspmu_ctx(cspmu);
> > +
> > + return ctx->name;
> > +}
> > +
> > +static u32 nv_cspmu_event_filter(const struct perf_event *event)
> > +{
> > + const struct nv_cspmu_ctx *ctx =
> > + to_nv_cspmu_ctx(to_arm_cspmu(event->pmu));
> > +
> > + return event->attr.config1 & ctx->filter_mask;
> > +}
> > +
> > +enum nv_cspmu_name_fmt {
> > + NAME_FMT_GENERIC,
> > + NAME_FMT_PROC
> > +};
> > +
> > +struct nv_cspmu_match {
> > + u32 prodid;
> > + u32 prodid_mask;
> > + u64 filter_mask;
> > + const char *name_pattern;
> > + enum nv_cspmu_name_fmt name_fmt;
> > + struct attribute **event_attr;
> > + struct attribute **format_attr;
> > +};
> > +
> > +static const struct nv_cspmu_match nv_cspmu_match[] = {
>
> Similar coding style nit below.
>

Sure, I will update this.

>
> Otherwise,
>
> Acked-by: Suzuki K Poulose <suzuki.poulose@xxxxxxx>

Thanks!

Unfortunately, we need to update the name of the PMUs and remove
some of the attributes in NVIDIA implementation. This requires a change
in nvidia_cspmu.c and nvidia-pmu.rst. I hope you are fine if I include this
change on v5 patch.

Regards,
Besar

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