Re: [PATCH v2] rteval: Add relative cpulists for loads

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On Thu, 4 Apr 2024, tglozar@xxxxxxxxxx wrote:

> From: Tomas Glozar <tglozar@xxxxxxxxxx>
> 
> Relative cpulists were added for measurements in 64ce7848 ("rteval: Add
> relative cpulists for measurements"). It was observed since that this
> feature would also be useful for load cpulists, for example when the
> measurements are performed externally and rteval is only used to run
> loads.
> 
> Add support for relative cpulists also for loads. This works the same
> way as for measurements using parse_cpulist_from_config, only difference
> is there is no --loads-run-on-isolcpus option. That is, --loads-cpulist
> now also takes lists with addition (+) and removal (-) of CPUs against
> the default list, e.g. +0,1,-7,8.
> 
> Signed-off-by: Tomas Glozar <tglozar@xxxxxxxxxx>
> ---
>  rteval-cmd | 17 ++++++++++-------
>  1 file changed, 10 insertions(+), 7 deletions(-)
> 
> diff --git a/rteval-cmd b/rteval-cmd
> index a5e8746..2ef6cf4 100755
> --- a/rteval-cmd
> +++ b/rteval-cmd
> @@ -339,29 +339,32 @@ if __name__ == '__main__':
>  
>          ldcfg = config.GetSection('loads')
>          msrcfg = config.GetSection('measurement')
> +        # Remember if cpulists were explicitly set by the user before running
> +        # parse_cpulist_from_config, which generates default value for them
>          msrcfg_cpulist_present = msrcfg.cpulist != ""
> -        # Parse measurement cpulist using parse_cpulist_from_config to account for run-on-isolcpus
> -        # and relative cpusets
> +        ldcfg_cpulist_present = ldcfg.cpulist != ""
> +        # Parse cpulists using parse_cpulist_from_config to account for
> +        # run-on-isolcpus and relative cpusets
>          cpulist = parse_cpulist_from_config(msrcfg.cpulist, msrcfg.run_on_isolcpus)
>          if msrcfg_cpulist_present and not cpulist_utils.is_relative(msrcfg.cpulist) and msrcfg.run_on_isolcpus:
>              logger.log(Log.WARN, "ignoring --measurement-run-on-isolcpus, since cpulist is specified")
>          msrcfg.cpulist = collapse_cpulist(cpulist)
> -        if ldcfg.cpulist:
> -            ldcfg.cpulist = remove_offline(ldcfg.cpulist)
> +        cpulist = parse_cpulist_from_config(ldcfg.cpulist)
> +        ldcfg.cpulist = collapse_cpulist(cpulist)
>          # if we only specified one set of cpus (loads or measurement)
>          # default the other to the inverse of the specified list
> -        if not ldcfg.cpulist and msrcfg_cpulist_present:
> +        if not ldcfg_cpulist_present and msrcfg_cpulist_present:
>              tmplist = expand_cpulist(msrcfg.cpulist)
>              tmplist = SysTopology().invert_cpulist(tmplist)
>              tmplist = cpulist_utils.online_cpulist(tmplist)
>              ldcfg.cpulist = collapse_cpulist(tmplist)
> -        if not msrcfg_cpulist_present and ldcfg.cpulist:
> +        if not msrcfg_cpulist_present and ldcfg_cpulist_present:
>              tmplist = expand_cpulist(ldcfg.cpulist)
>              tmplist = SysTopology().invert_cpulist(tmplist)
>              tmplist = cpulist_utils.online_cpulist(tmplist)
>              msrcfg.cpulist = collapse_cpulist(tmplist)
>  
> -        if ldcfg.cpulist:
> +        if ldcfg_cpulist_present:
>              logger.log(Log.DEBUG, f"loads cpulist: {ldcfg.cpulist}")
>          # if --onlyload is specified msrcfg.cpulist is unused
>          if msrcfg_cpulist_present and not rtevcfg.onlyload:
> -- 

Signed-off-by: John Kacur <jkacur@xxxxxxxxxx>





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