MLK-24053-3 perf vendor events: add ddr bandwidth usage metric for i.MX8DXL
Add ddr bandwidth usage metric support for i.MX8DXL.
Metric:
imx8dxl_lpddr4.bandwidth_usage
imx8dxl_ddr3l.bandwidth_usage
Example:
root@imx8dxlevk:~# ./perf stat -a -I 1000 -M imx8dxl_lpddr4.bandwidth_usage dd if=/dev/zero of=/dev/null bs=100M count=1000000
1.000242625 1444320 imx8_ddr0/axid-read,axi_mask=0xffff,axi_id=0x0000,axi_channel=0x0/ # 15.1 % imx8dxl_lpddr4.bandwidth_usage
1.000242625 88964544 imx8_ddr0/axid-write,axi_mask=0xffff,axi_id=0x0000,axi_channel=0x0/
1.000242625 1000242625 ns duration_time
2.001170500 297392 imx8_ddr0/axid-read,axi_mask=0xffff,axi_id=0x0000,axi_channel=0x0/ # 16.0 % imx8dxl_lpddr4.bandwidth_usage
2.001170500 95684315 imx8_ddr0/axid-write,axi_mask=0xffff,axi_id=0x0000,axi_channel=0x0/
2.001170500 1000927875 ns duration_time
3.001840125 320798 imx8_ddr0/axid-read,axi_mask=0xffff,axi_id=0x0000,axi_channel=0x0/ # 16.0 % imx8dxl_lpddr4.bandwidth_usage
3.001840125 95655155 imx8_ddr0/axid-write,axi_mask=0xffff,axi_id=0x0000,axi_channel=0x0/
3.001840125 1000669625 ns duration_time
Reviewed-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
cccac37cb9