• Gautham R Shenoy's avatar
    sched: Print sched_group::__cpu_power in sched_domain_debug · 46e0bb9c
    Gautham R Shenoy authored
    Impact: extend debug info /proc/sched_debug
    
    If the user changes the value of the sched_mc/smt_power_savings sysfs
    tunable, it'll trigger a rebuilding of the whole sched_domain tree,
    with the SD_POWERSAVINGS_BALANCE flag set at certain levels.
    
    As a result, there would be a change in the __cpu_power of sched_groups
    in the sched_domain hierarchy.
    
    Print the __cpu_power values for each sched_group in sched_domain_debug
    to help verify this change and correlate it with the change in the
    load-balancing behavior.
    Signed-off-by: default avatarGautham R Shenoy <ego@in.ibm.com>
    Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
    LKML-Reference: <20090330045520.2869.24777.stgit@sofia.in.ibm.com>
    Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
    46e0bb9c
sched.c 236 KB