ACPR/android_system_core
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Merge "libprocessgroup: fall back to cpuset in get_sched_policy"

Browse source
This commit is contained in:
Wei Wang 2021-12-16 19:38:54 +00:00 • committed by Gerrit Code Review
commit a5247158fb
1 changed files with 30 additions and 21 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

51
libprocessgroup/sched_policy.cpp
View file

@ -165,27 +165,7 @@ static int getCGroupSubsys(int tid, const char* subsys, std::string& subgroup) {
return 0;
}
int get_sched_policy(int tid, SchedPolicy* policy) {
if (tid == 0) {
tid = GetThreadId();
}
std::string group;
if (schedboost_enabled()) {
if ((getCGroupSubsys(tid, "schedtune", group) < 0) &&
(getCGroupSubsys(tid, "cpu", group) < 0)) {
LOG(ERROR) << "Failed to find cpu cgroup for tid " << tid;
return -1;
}
}
if (group.empty() && cpusets_enabled()) {
if (getCGroupSubsys(tid, "cpuset", group) < 0) {
LOG(ERROR) << "Failed to find cpuset cgroup for tid " << tid;
return -1;
}
}
// TODO: replace hardcoded directories
static int get_sched_policy_from_group(const std::string& group, SchedPolicy* policy) {
if (group.empty()) {
*policy = SP_FOREGROUND;
} else if (group == "foreground") {
@ -205,6 +185,35 @@ int get_sched_policy(int tid, SchedPolicy* policy) {
return 0;
}
int get_sched_policy(int tid, SchedPolicy* policy) {
if (tid == 0) {
tid = GetThreadId();
}
std::string group;
if (schedboost_enabled()) {
if ((getCGroupSubsys(tid, "schedtune", group) < 0) &&
(getCGroupSubsys(tid, "cpu", group) < 0)) {
LOG(ERROR) << "Failed to find cpu cgroup for tid " << tid;
return -1;
}
// Wipe invalid group to fallback to cpuset
if (!group.empty()) {
if (get_sched_policy_from_group(group, policy) < 0) {
group.clear();
} else {
return 0;
}
}
}
if (cpusets_enabled() && getCGroupSubsys(tid, "cpuset", group) < 0) {
LOG(ERROR) << "Failed to find cpuset cgroup for tid " << tid;
return -1;
}
return get_sched_policy_from_group(group, policy);
}
#else
/* Stubs for non-Android targets. */