mirror of https://github.com/torvalds/linux.git
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>
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|---|---|---|
| .. | ||
| Kconfig | ||
| Makefile | ||
| altera-cvp.c | ||
| altera-fpga2sdram.c | ||
| altera-freeze-bridge.c | ||
| altera-hps2fpga.c | ||
| altera-pr-ip-core-plat.c | ||
| altera-pr-ip-core.c | ||
| altera-ps-spi.c | ||
| dfl-afu-dma-region.c | ||
| dfl-afu-error.c | ||
| dfl-afu-main.c | ||
| dfl-afu-region.c | ||
| dfl-afu.h | ||
| dfl-fme-br.c | ||
| dfl-fme-error.c | ||
| dfl-fme-main.c | ||
| dfl-fme-mgr.c | ||
| dfl-fme-perf.c | ||
| dfl-fme-pr.c | ||
| dfl-fme-pr.h | ||
| dfl-fme-region.c | ||
| dfl-fme.h | ||
| dfl-pci.c | ||
| dfl.c | ||
| dfl.h | ||
| fpga-bridge.c | ||
| fpga-mgr.c | ||
| fpga-region.c | ||
| ice40-spi.c | ||
| machxo2-spi.c | ||
| of-fpga-region.c | ||
| socfpga-a10.c | ||
| socfpga.c | ||
| stratix10-soc.c | ||
| ts73xx-fpga.c | ||
| xilinx-pr-decoupler.c | ||
| xilinx-spi.c | ||
| zynq-fpga.c | ||
| zynqmp-fpga.c | ||