diff options
| -rw-r--r-- | libs/cputimeinstate/cputimeinstate.cpp | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/libs/cputimeinstate/cputimeinstate.cpp b/libs/cputimeinstate/cputimeinstate.cpp index a02b28551e..6f50a1e623 100644 --- a/libs/cputimeinstate/cputimeinstate.cpp +++ b/libs/cputimeinstate/cputimeinstate.cpp @@ -141,6 +141,17 @@ static bool attachTracepointProgram(const std::string &eventType, const std::str // This function should *not* be called while tracking is already active; doing so is unnecessary // and can lead to accounting errors. bool startTrackingUidCpuFreqTimes() { + if (!initGlobals()) return false; + + unique_fd fd(bpf_obj_get(BPF_FS_PATH "map_time_in_state_cpu_policy_map")); + if (fd < 0) return false; + + for (uint32_t i = 0; i < gPolicyCpus.size(); ++i) { + for (auto &cpu : gPolicyCpus[i]) { + if (writeToMapEntry(fd, &cpu, &i, BPF_ANY)) return false; + } + } + return attachTracepointProgram("sched", "sched_switch") && attachTracepointProgram("power", "cpu_frequency"); } |