Message ID | 1541780454-9934-1-git-send-email-vincent.guittot@linaro.org |
---|---|
Headers | show |
Series | sched/fair: update scale invariance of PELT | expand |
On 11/9/18 8:20 AM, Vincent Guittot wrote: > This new version of the scale invariance patchset adds an important change > compare to v3 and before. It still scales the time to reflect the > amount of work that has been done during the elapsed running time but this is > now done at rq level instead of per entity and rt/dl/cfs_rq. The main > advantage is that it is done once per clock update and we don't need to > maintain per sched_avg's stolen_idle_time anymore. This also ensures that > all pelt signals will be always synced for a rq. > > The 1st patch makes available rq_of() helper function for pelt.c file and > the 2nd patch implements the new scaling algorithm > > Changes since v5: > - Fix running_sum scaling in update_tg_cfs_runnable() raised by Dietmar > - Remove unused cpu parameters raised by Dietmar I just re-discovered ... the comment for the definition of struct sched_avg in include/linux/sched.h also mentioned the different ways how we do invariance for load_avg and util_avg. [...]