Tejun Heo 1aa50d020c blk-iocost: calculate iocg->usages[] from iocg->local_stat.usage_us ... Currently, iocg->usages[] which are used to guide inuse adjustments are calculated from vtime deltas. This, however, assumes that the hierarchical inuse weight at the time of calculation held for the entire period, which often isn't true and can lead to significant errors. Now that we have absolute usage information collected, we can derive iocg->usages[] from iocg->local_stat.usage_us so that inuse adjustment decisions are made based on actual absolute usage. The calculated usage is clamped between 1 and WEIGHT_ONE and WEIGHT_ONE is also used to signal saturation regardless of the current hierarchical inuse weight. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>		2020-09-01 19:38:32 -06:00
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events	blk-iocost: calculate iocg->usages[] from iocg->local_stat.usage_us	2020-09-01 19:38:32 -06:00
bpf_probe.h	bpf: Reliably preserve btf_trace_xxx types	2020-03-02 16:49:55 -08:00
define_trace.h	tracing: introduce TRACE_EVENT_NOP()	2019-04-08 09:22:51 -04:00
perf.h	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-11-04 09:26:51 +09:00
syscall.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
trace_events.h	tracing: not necessary to define DEFINE_EVENT_PRINT to be empty again	2020-06-30 14:29:32 -04:00