• Vincent Guittot's avatar
    sched/fair: Optimize find_idlest_group() · fc1273f4
    Vincent Guittot authored
    
    
    find_idlest_group() now reads CPU's load_avg in two different ways.
    
    Consolidate the function to read and use load_avg only once and simplify
    the algorithm to only look for the group with lowest load_avg.
    Signed-off-by: default avatarVincent Guittot <vincent.guittot@linaro.org>
    Cc: Ben Segall <bsegall@google.com>
    Cc: Dietmar Eggemann <dietmar.eggemann@arm.com>
    Cc: Juri Lelli <juri.lelli@redhat.com>
    Cc: Linus Torvalds <torvalds@linux-foundation.org>
    Cc: Mel Gorman <mgorman@suse.de>
    Cc: Mike Galbraith <efault@gmx.de>
    Cc: Morten.Rasmussen@arm.com
    Cc: Peter Zijlstra <peterz@infradead.org>
    Cc: Steven Rostedt <rostedt@goodmis.org>
    Cc: Thomas Gleixner <tglx@linutronix.de>
    Cc: hdanton@sina.com
    Cc: parth@linux.ibm.com
    Cc: pauld@redhat.com
    Cc: quentin.perret@arm.com
    Cc: riel@surriel.com
    Cc: srikar@linux.vnet.ibm.com
    Cc: valentin.schneider@arm.com
    Link: https://lkml.kernel.org/r/1571405198-27570-11-git-send-email-vincent.guittot@linaro.org
    
    Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
    fc1273f4
fair.c 279 KB