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ANDROID: sched: Add vendor hook to select ilb cpu

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Add android_rvh_find_new_ilb to select a next ilb cpu for vendors.

Bug: 190228983

Change-Id: Iba1a0cd9cdc22dcf628dd33f8d838fe513a4818f
Signed-off-by: Choonghoon Park <choong.park@samsung.com>
This commit is contained in:
Choonghoon Park
2021-06-03 20:35:50 +09:00
committed by Todd Kjos
parent 1eea1cbdd3
commit 178eea2694
3 changed files with 10 additions and 1 deletions
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1
drivers/android/vendor_hooks.c
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@@ -189,3 +189,4 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_check_mmap_file);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_check_file_open);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_check_bpf_syscall);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_post_init_entity_util_avg);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_find_new_ilb);

4
include/trace/hooks/sched.h
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@@ -310,6 +310,10 @@ DECLARE_RESTRICTED_HOOK(android_rvh_post_init_entity_util_avg,
TP_PROTO(struct sched_entity *se),
TP_ARGS(se), 1);
DECLARE_RESTRICTED_HOOK(android_rvh_find_new_ilb,
TP_PROTO(struct cpumask *nohz_idle_cpus_mask, int *ilb),
TP_ARGS(nohz_idle_cpus_mask, ilb), 1);
#endif /* _TRACE_HOOK_SCHED_H */
/* This part must be outside protection */
#include <trace/define_trace.h>

6
kernel/sched/fair.c
View File

@@ -10509,9 +10509,13 @@ static inline int on_null_domain(struct rq *rq)
static inline int find_new_ilb(void)
{
int ilb;
int ilb = -1;
const struct cpumask *hk_mask;
trace_android_rvh_find_new_ilb(nohz.idle_cpus_mask, &ilb);
if (ilb >= 0)
return ilb;
hk_mask = housekeeping_cpumask(HK_FLAG_MISC);
for_each_cpu_and(ilb, nohz.idle_cpus_mask, hk_mask) {