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Commit 18b48484 authored by Ke Wang's avatar Ke Wang Committed by Joel Fernandes
Browse files

trace: sched: Fix util_avg_walt in sched_load_avg_cpu trace 



cumulative_runnable_avg was introduced in commit ee4cebd7 ("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: default avatarKe Wang <ke.wang@spreadtrum.com>
parent 724091f6

include/trace/events/sched.h

+3 −3
Original line number Diff line number Diff line
@@ -725,8 +725,8 @@ TRACE_EVENT(sched_load_avg_cpu, 
		__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);

				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