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Commit fdafb3d0 authored by Wei Wang's avatar Wei Wang
Browse files

init: Add warning in init first stage mount 

init need find required devices and it some times takes a long time due
to rogue drivers. Add a warning if the timing is longer than 50ms.

Bug: 80494921
Test: Reboot
Change-Id: I8f937d7ca7127dc89ed76bb6e5f1781459d5c94a
parent 72221992

init/uevent_listener.cpp

+14 −0
Original line number Diff line number Diff line
@@ -23,7 +23,11 @@ 


#include <memory>



#include <android-base/chrono_utils.h>

#include <android-base/file.h>

#include <android-base/logging.h>

#include <android-base/scopeguard.h>

#include <android-base/stringprintf.h>

#include <cutils/uevent.h>



namespace android {
@@ -130,9 +134,19 @@ ListenerAction UeventListener::RegenerateUeventsForDir(DIR* d, 


    int fd = openat(dfd, "uevent", O_WRONLY);

    if (fd >= 0) {

        android::base::Timer t;

        write(fd, "add\n", 4);

        const std::string fd_path = android::base::StringPrintf("/proc/self/fd/%d", fd);

        std::string uevent_file_path;

        android::base::Readlink(fd_path, &uevent_file_path);

        close(fd);



        auto guard = android::base::make_scope_guard([&t, &uevent_file_path]() {

            if (t.duration() > 50ms) {

                LOG(WARNING) << "ReadUevent took " << t << " on '" << uevent_file_path << "'";

            }

        });



        Uevent uevent;

        while (ReadUevent(&uevent)) {

            if (callback(uevent) == ListenerAction::kStop) return ListenerAction::kStop;