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Present only on systems that >>>> +            support allocation. >>> >>> ok - this is already late in the series but this seems to make it clear that >>> "allocation association" means the portions of resources allocated to this group. >>> Thus the earlier " enum kmode_state - Control or monitoring association" is wrong? >> >> I think, it should be " enum kmode_state - Allocation or monitoring association" > > Please don't. This is exactly the problem that I keep coming back to. If you > change the name as you suggest then you solidify that you use the same term to mean > two different things. Specifically, what above change implies is that the reader is left > to decipher when: > > "allocation and monitoring association" means > MSR_IA32_PQR_PLZA_ASSOC.closid and MSR_IA32_PQR_PLZA_ASSOC.rmid > > vs when > > "allocation and monitoring association" means > MSR_IA32_PQR_PLZA_ASSOC.closid_en and MSR_IA32_PQR_PLZA_ASSOC.rmid_en > > That is correct. It is confusing. Let me try to revise these terms in next revision and go from there. >>>> +        "mon": >>>> +            "assign" if kernel mode work uses the monitoring >>>> +            association of the resource group named by "group", >>>> +            "inherit" if it uses the monitoring association of >>>> +            the user-space task. Present only on systems that >>>> +            support monitoring. >>>> +        "group": >>>> +            Path of the resource group, relative to the resctrl >>>> +            mount point. A CTRL_MON group is shown as //, >>> >>> Shouldn't it just be / ? >> >> Or We can say "//" to be generic for both cases. >> >> "The group is shown as  "//". > > No, this depends on whether monitoring is enabled or not, or (if monitoring is > supported) whether mon=inherit. ok. Will try to handle it. > > > ... > >>>> + >>>> +            sep = ':'; >>>> +            if (resctrl_arch_alloc_capable()) { >>>> +                seq_printf(seq, "%cctrl=%s", sep, >>>> +                       resctrl_kmode_state_str(resctrl_kmode.ctrl)); >>>> +                sep = ';'; >>>> +            } >>>> +            if (resctrl_arch_mon_capable()) { >>>> +                seq_printf(seq, "%cmon=%s", sep, >>>> +                       resctrl_kmode_state_str(resctrl_kmode.mon)); >>>> +                sep = ';'; >>>> +            } >>>> +            seq_printf(seq, "%cgroup=%s/%s/", sep, ctrl_grp, mon_grp); >>> >>> Looks like this will print a monitoring group on a system that does not support >>> monitoring? I understand that the monitoring group will be the empty string in this >>> scenario but in resctrl that has meaning of "default monitoring group" so printing >>> this when monitoring is not supported is unexpected. >>> >> >> Ok. If monitoring not supported it will be "CTRL_MON/" (Example group=ctrl1/") and then default group is "/". >> >> Is that what you are suggesting? > > Yes. This matches the proc output. > >> >> >>> I also do not expect the monitoring group to be displayed if "mon=inherit" since >>> that presents a contradiction with stating that "monitoring group is inherited" >>> while printing a monitoring group. >> >> Yes. We should not display "mon=inherit" when monitoring in not supported. Will check on this. >> > This is needed yes, but what I was actually referring to was that if "mon=inherit" > then the group parameter should not include a monitoring group. For example, "group=ctrl/". > Including the name of a monitoring group when "mon=inherit" is confusing. > Good point. This is something new that I need to handle here, so I'll work on fixing it. Thanks, Babu Babu