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blk-iocost: restore inuse update tracepoints

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Update and restore the inuse update tracepoints.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Tejun Heo 2020-09-01 14:52:55 -04:00 committed by Jens Axboe
parent ac33e91e2d
commit 0460375517
2 changed files with 19 additions and 3 deletions
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16
block/blk-iocost.c
View File

@ -1919,6 +1919,12 @@ static void transfer_surpluses(struct list_head *surpluses, struct ioc_now *now)
inuse = DIV64_U64_ROUND_UP(
parent->child_adjusted_sum * iocg->hweight_after_donation,
parent->hweight_inuse);
TRACE_IOCG_PATH(inuse_transfer, iocg, now,
iocg->inuse, inuse,
iocg->hweight_inuse,
iocg->hweight_after_donation);
__propagate_weights(iocg, iocg->active, inuse, true, now);
}
@ -2076,6 +2082,10 @@ static void ioc_timer_fn(struct timer_list *timer)
iocg->hweight_after_donation = new_hwi;
list_add(&iocg->surplus_list, &surpluses);
} else {
TRACE_IOCG_PATH(inuse_shortage, iocg, &now,
iocg->inuse, iocg->active,
iocg->hweight_inuse, new_hwi);
__propagate_weights(iocg, iocg->active,
iocg->active, true, &now);
nr_shortages++;
@ -2248,11 +2258,13 @@ static u64 adjust_inuse_and_calc_cost(struct ioc_gq *iocg, u64 vtime,
struct ioc *ioc = iocg->ioc;
struct ioc_margins *margins = &ioc->margins;
u32 adj_step = DIV_ROUND_UP(iocg->active * INUSE_ADJ_STEP_PCT, 100);
u32 __maybe_unused old_inuse = iocg->inuse, __maybe_unused old_hwi;
u32 hwi;
s64 margin;
u64 cost, new_inuse;
current_hweight(iocg, NULL, &hwi);
old_hwi = hwi;
cost = abs_cost_to_cost(abs_cost, hwi);
margin = now->vnow - vtime - cost;
@ -2287,6 +2299,10 @@ static u64 adjust_inuse_and_calc_cost(struct ioc_gq *iocg, u64 vtime,
iocg->inuse != iocg->active);
spin_unlock_irq(&ioc->lock);
TRACE_IOCG_PATH(inuse_adjust, iocg, now,
old_inuse, iocg->inuse, old_hwi, hwi);
return cost;
}

6
include/trace/events/iocost.h
View File

@ -95,7 +95,7 @@ DECLARE_EVENT_CLASS(iocg_inuse_update,
)
);
DEFINE_EVENT(iocg_inuse_update, iocost_inuse_takeback,
DEFINE_EVENT(iocg_inuse_update, iocost_inuse_shortage,
TP_PROTO(struct ioc_gq *iocg, const char *path, struct ioc_now *now,
u32 old_inuse, u32 new_inuse,
@ -105,7 +105,7 @@ DEFINE_EVENT(iocg_inuse_update, iocost_inuse_takeback,
old_hw_inuse, new_hw_inuse)
);
DEFINE_EVENT(iocg_inuse_update, iocost_inuse_giveaway,
DEFINE_EVENT(iocg_inuse_update, iocost_inuse_transfer,
TP_PROTO(struct ioc_gq *iocg, const char *path, struct ioc_now *now,
u32 old_inuse, u32 new_inuse,
@ -115,7 +115,7 @@ DEFINE_EVENT(iocg_inuse_update, iocost_inuse_giveaway,
old_hw_inuse, new_hw_inuse)
);
DEFINE_EVENT(iocg_inuse_update, iocost_inuse_reset,
DEFINE_EVENT(iocg_inuse_update, iocost_inuse_adjust,
TP_PROTO(struct ioc_gq *iocg, const char *path, struct ioc_now *now,
u32 old_inuse, u32 new_inuse,