Hi Babu, On Wed, Jul 3, 2024 at 2:51 PM Babu Moger <babu.moger@xxxxxxx> wrote: > > Introduce the interface to enable events in ABMC mode. > > Events can be enabled or disabled by writing to file > /sys/fs/resctrl/info/L3_MON/mbm_control > > Format is similar to the list format with addition of op-code for the > assignment operation. > "<CTRL_MON group>/<MON group>/<op-code><flags>" > > Format for specific type of groups: > > * Default CTRL_MON group: > "//<domain_id><op-code><flags>" > > * Non-default CTRL_MON group: > "<CTRL_MON group>//<domain_id><op-code><flags>" > > * Child MON group of default CTRL_MON group: > "/<MON group>/<domain_id><op-code><flags>" > > * Child MON group of non-default CTRL_MON group: > "<CTRL_MON group>/<MON group>/<domain_id><op-code><flags>" Just a reminder, Reinette and I had discussed[1] omitting the domain_id for performing the same operation on all domains. I would really appreciate this, otherwise our most typical operations could be really tedious and needlessly serialized. # cat mbm_control //0=tl;1=tl;2=tl;3=tl;4=tl;5=tl;6=tl;7=tl;8=tl;9=tl;10=tl;11=tl;12=tl;13=tl;14=tl;15=tl;16=tl;17=tl;18=tl;19=tl;20=tl;21=tl;22=tl;23=tl;24=tl;25=tl;26=tl;27=tl;28=tl;29=tl;30=tl;31=tl; # echo '//-l' > mbm_control -bash: echo: write error: Invalid argument # cat ../last_cmd_status Missing domain id If you can't get to it in this series, I'll push a scalability-oriented series after the basic assignment support is merged. Thanks! -Peter [1] https://lore.kernel.org/lkml/CALPaoChcJq5zoPchB2j0aM+nZpQe1xoo7w2QQUjtH+c58Yyxag@xxxxxxxxxxxxxx/
