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trace: sched: Fix util_avg_walt in sched_load_avg_cpu trace

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cumulative_runnable_avg was introduced in commit ee4cebd75e ("sched:
EAS/WALT: use cr_avg instead of prev_runnable_sum") in cpu_util() for
task placement, which is used to replace prev_runnable_sum.

Fix util_avg_walt in sched_load_avg_cpu trace, which use prev_runnable_sum
for cpu_util().

Moreover, fix potential overflow due to cumulative_runnable_avg is in u64.

Change-Id: I1220477bf2ff32a6e34a34b6280b15a8178203a8
Signed-off-by: Ke Wang <ke.wang@spreadtrum.com>
This commit is contained in:
Ke Wang 2017-10-18 15:49:33 +08:00 • committed by Joel Fernandes
parent 724091f67f
commit 18b484845c
1 changed files with 3 additions and 3 deletions
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6
include/trace/events/sched.h
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@ -724,9 +724,9 @@ TRACE_EVENT(sched_load_avg_cpu,
__entry->util_avg_pelt = cfs_rq->avg.util_avg;
__entry->util_avg_walt = 0;
#ifdef CONFIG_SCHED_WALT
__entry->util_avg_walt =
cpu_rq(cpu)->prev_runnable_sum << SCHED_LOAD_SHIFT;
do_div(__entry->util_avg_walt, walt_ravg_window);
__entry->util_avg_walt =
div64_u64(cpu_rq(cpu)->cumulative_runnable_avg,
walt_ravg_window >> SCHED_LOAD_SHIFT);
if (!walt_disabled && sysctl_sched_use_walt_cpu_util)
__entry->util_avg = __entry->util_avg_walt;
#endif