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724142f8c4
This patch adds support for performance reporting private feature
for FPGA Management Engine (FME). Now it supports several different
performance counters, including 'basic', 'cache', 'fabric', 'vtd'
and 'vtd_sip'. It allows user to use standard linux tools to access
these performance counters.
e.g. List all events by "perf list"
perf list | grep fme
dfl_fme0/cache_read_hit/ [Kernel PMU event]
dfl_fme0/cache_read_miss/ [Kernel PMU event]
...
dfl_fme0/fab_mmio_read/ [Kernel PMU event]
dfl_fme0/fab_mmio_write/ [Kernel PMU event]
...
dfl_fme0/fab_port_mmio_read,portid=?/ [Kernel PMU event]
dfl_fme0/fab_port_mmio_write,portid=?/ [Kernel PMU event]
...
dfl_fme0/vtd_port_devtlb_1g_fill,portid=?/ [Kernel PMU event]
dfl_fme0/vtd_port_devtlb_2m_fill,portid=?/ [Kernel PMU event]
...
dfl_fme0/vtd_sip_iotlb_1g_hit/ [Kernel PMU event]
dfl_fme0/vtd_sip_iotlb_1g_miss/ [Kernel PMU event]
...
dfl_fme0/clock [Kernel PMU event]
...
e.g. check increased counter value after run one application using
"perf stat" command.
perf stat -e dfl_fme0/fab_mmio_read/,dfl_fme0/fab_mmio_write/ ./test
Performance counter stats for './test':
1 dfl_fme0/fab_mmio_read/
2 dfl_fme0/fab_mmio_write/
1.009496520 seconds time elapsed
Please note that fabric counters support both fab_* and fab_port_*, but
actually they are sharing one set of performance counters in hardware.
If user wants to monitor overall data events on fab_* then fab_port_*
can't be supported at the same time, see example below:
perf stat -e dfl_fme0/fab_mmio_read/,dfl_fme0/fab_port_mmio_write,portid=0/
Performance counter stats for 'system wide':
0 dfl_fme0/fab_mmio_read/
<not supported> dfl_fme0/fab_port_mmio_write,portid=0/
2.141064085 seconds time elapsed
Signed-off-by: Luwei Kang <luwei.kang@intel.com>
Signed-off-by: Xu Yilun <yilun.xu@intel.com>
Signed-off-by: Wu Hao <hao.wu@intel.com>
Link: https://lore.kernel.org/r/1587949583-12058-3-git-send-email-hao.wu@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
105 lines
4.7 KiB
Plaintext
105 lines
4.7 KiB
Plaintext
What: /sys/bus/event_source/devices/dfl_fmeX/format
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Date: April 2020
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KernelVersion: 5.8
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Contact: Wu Hao <hao.wu@intel.com>
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Description: Read-only. Attribute group to describe the magic bits
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that go into perf_event_attr.config for a particular pmu.
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(See ABI/testing/sysfs-bus-event_source-devices-format).
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Each attribute under this group defines a bit range of the
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perf_event_attr.config. All supported attributes are listed
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below.
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event = "config:0-11" - event ID
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evtype = "config:12-15" - event type
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portid = "config:16-23" - event source
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For example,
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fab_mmio_read = "event=0x06,evtype=0x02,portid=0xff"
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It shows this fab_mmio_read is a fabric type (0x02) event with
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0x06 local event id for overall monitoring (portid=0xff).
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What: /sys/bus/event_source/devices/dfl_fmeX/cpumask
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Date: April 2020
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KernelVersion: 5.8
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Contact: Wu Hao <hao.wu@intel.com>
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Description: Read-only. This file always returns cpu which the PMU is bound
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for access to all fme pmu performance monitoring events.
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What: /sys/bus/event_source/devices/dfl_fmeX/events
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Date: April 2020
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KernelVersion: 5.8
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Contact: Wu Hao <hao.wu@intel.com>
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Description: Read-only. Attribute group to describe performance monitoring
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events specific to fme. Each attribute in this group describes
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a single performance monitoring event supported by this fme pmu.
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The name of the file is the name of the event.
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(See ABI/testing/sysfs-bus-event_source-devices-events).
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All supported performance monitoring events are listed below.
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Basic events (evtype=0x00)
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clock = "event=0x00,evtype=0x00,portid=0xff"
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Cache events (evtype=0x01)
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cache_read_hit = "event=0x00,evtype=0x01,portid=0xff"
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cache_read_miss = "event=0x01,evtype=0x01,portid=0xff"
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cache_write_hit = "event=0x02,evtype=0x01,portid=0xff"
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cache_write_miss = "event=0x03,evtype=0x01,portid=0xff"
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cache_hold_request = "event=0x05,evtype=0x01,portid=0xff"
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cache_data_write_port_contention =
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"event=0x06,evtype=0x01,portid=0xff"
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cache_tag_write_port_contention =
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"event=0x07,evtype=0x01,portid=0xff"
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cache_tx_req_stall = "event=0x08,evtype=0x01,portid=0xff"
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cache_rx_req_stall = "event=0x09,evtype=0x01,portid=0xff"
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cache_eviction = "event=0x0a,evtype=0x01,portid=0xff"
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Fabric events (evtype=0x02)
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fab_pcie0_read = "event=0x00,evtype=0x02,portid=0xff"
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fab_pcie0_write = "event=0x01,evtype=0x02,portid=0xff"
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fab_pcie1_read = "event=0x02,evtype=0x02,portid=0xff"
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fab_pcie1_write = "event=0x03,evtype=0x02,portid=0xff"
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fab_upi_read = "event=0x04,evtype=0x02,portid=0xff"
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fab_upi_write = "event=0x05,evtype=0x02,portid=0xff"
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fab_mmio_read = "event=0x06,evtype=0x02,portid=0xff"
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fab_mmio_write = "event=0x07,evtype=0x02,portid=0xff"
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fab_port_pcie0_read = "event=0x00,evtype=0x02,portid=?"
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fab_port_pcie0_write = "event=0x01,evtype=0x02,portid=?"
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fab_port_pcie1_read = "event=0x02,evtype=0x02,portid=?"
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fab_port_pcie1_write = "event=0x03,evtype=0x02,portid=?"
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fab_port_upi_read = "event=0x04,evtype=0x02,portid=?"
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fab_port_upi_write = "event=0x05,evtype=0x02,portid=?"
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fab_port_mmio_read = "event=0x06,evtype=0x02,portid=?"
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fab_port_mmio_write = "event=0x07,evtype=0x02,portid=?"
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VTD events (evtype=0x03)
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vtd_port_read_transaction = "event=0x00,evtype=0x03,portid=?"
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vtd_port_write_transaction = "event=0x01,evtype=0x03,portid=?"
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vtd_port_devtlb_read_hit = "event=0x02,evtype=0x03,portid=?"
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vtd_port_devtlb_write_hit = "event=0x03,evtype=0x03,portid=?"
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vtd_port_devtlb_4k_fill = "event=0x04,evtype=0x03,portid=?"
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vtd_port_devtlb_2m_fill = "event=0x05,evtype=0x03,portid=?"
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vtd_port_devtlb_1g_fill = "event=0x06,evtype=0x03,portid=?"
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VTD SIP events (evtype=0x04)
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vtd_sip_iotlb_4k_hit = "event=0x00,evtype=0x04,portid=0xff"
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vtd_sip_iotlb_2m_hit = "event=0x01,evtype=0x04,portid=0xff"
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vtd_sip_iotlb_1g_hit = "event=0x02,evtype=0x04,portid=0xff"
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vtd_sip_slpwc_l3_hit = "event=0x03,evtype=0x04,portid=0xff"
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vtd_sip_slpwc_l4_hit = "event=0x04,evtype=0x04,portid=0xff"
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vtd_sip_rcc_hit = "event=0x05,evtype=0x04,portid=0xff"
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vtd_sip_iotlb_4k_miss = "event=0x06,evtype=0x04,portid=0xff"
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vtd_sip_iotlb_2m_miss = "event=0x07,evtype=0x04,portid=0xff"
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vtd_sip_iotlb_1g_miss = "event=0x08,evtype=0x04,portid=0xff"
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vtd_sip_slpwc_l3_miss = "event=0x09,evtype=0x04,portid=0xff"
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vtd_sip_slpwc_l4_miss = "event=0x0a,evtype=0x04,portid=0xff"
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vtd_sip_rcc_miss = "event=0x0b,evtype=0x04,portid=0xff"
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