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modem: Add kernel metrics log to bugreport

Browse source 
Test: adb bugreport
Bug: 368510043
Flag: EXEMPT use property flag: persist.vendor.modem.qms.kernel_metrics_collection
Change-Id: I874157f12308194f38f67755abbcf2ba7efe3c7a
This commit is contained in:
Eileen Lai 2025-01-09 15:44:16 +00:00
parent 737725ba27
commit 92ce682a8e
4 changed files with 46 additions and 2 deletions
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1
modem/dump_modemlog/Android.bp
View file

@ -5,6 +5,7 @@ package {
rust_binary {
name: "dump_modem",
srcs: ["dump_modem.rs"],
rustlibs: ["librustutils"],
vendor: true,
relative_install_path: "dump",
}

35
modem/dump_modemlog/dump_modem.rs
View file

@ -3,6 +3,7 @@
//! The dump_modem binary is used to capture kernel/userspace logs in bugreport
use std::fs;
use std::str::FromStr;
const MODEM_STAT: &str = "/data/vendor/modem_stat/debug.txt";
const SSRDUMP_DIR: &str = "/data/vendor/ssrdump";
@ -10,6 +11,7 @@ const RFSD_ERR_LOG_DIR: &str = "/data/vendor/log/rfsd";
const WAKEUP_EVENTS: &str = "/sys/devices/platform/cpif/wakeup_events";
const CPIF_LOGBUFFER: &str = "/dev/logbuffer_cpif";
const PCIE_EVENT_STATS: &str = "/sys/devices/platform/cpif/modem/pcie_event_stats";
const KERNEL_METRICS_DIR: &str = "/sys/kernel/pixel_metrics/modem";
fn handle_io_error(file: &str, err: std::io::Error) {
match err.kind() {
@ -57,6 +59,13 @@ fn print_matching_files_in_dir(dir: &str, filename: &str) {
}
}
fn get_property(key: &str, default_value: i32) -> i32 {
let value = rustutils::system_properties::read(key)
.unwrap_or(None)
.unwrap_or(default_value.to_string());
i32::from_str(&value).unwrap_or(default_value)
}
// Capture modem stat log if it exists
fn modem_stat() {
println!("------ Modem Stat ------");
@ -99,6 +108,27 @@ fn pcie_event_stats() {
println!();
}
// Capture kernel metrics stats if the sysfs attribute exists
fn print_kernel_metrics() {
println!("------ Kernel Metrics ------");
let file_list = vec![
"modem_boot_duration",
"modem_wakeup_ap",
"pcie_link_state",
"pcie_link_duration",
"pcie_link_stats",
"pcie_link_updown",
];
for file in file_list {
println!("------ {} ------", file);
let file_path = format!("{}/{}", KERNEL_METRICS_DIR, file);
print_file_and_handle_error(&file_path);
println!();
}
}
fn main() {
modem_stat();
modem_ssr_history();
@ -106,4 +136,9 @@ fn main() {
wakeup_events();
cpif_logbuffer();
pcie_event_stats();
let prop_value = get_property("persist.vendor.modem.qms.kernel_metrics_collection", 0);
if prop_value == 1 {
print_kernel_metrics();
}
}

2
modem/dump_modemlog/sepolicy/dump_modem.te
View file

@ -1,3 +1,4 @@
# Sepolicy for dump_modem
pixel_bugreport(dump_modem)
allow dump_modem modem_stat_data_file:dir search;
@ -10,3 +11,4 @@ allow dump_modem vendor_rfsd_log_file:file r_file_perms;
allow dump_modem vendor_toolbox_exec:file execute_no_trans;
allow dump_modem sysfs_dump_modem:file r_file_perms;
allow dump_modem logbuffer_device:chr_file r_file_perms;
get_prop(dump_modem, vendor_modem_prop)

10
modem/dump_modemlog/sepolicy/genfs_contexts
View file

@ -1,2 +1,8 @@
genfscon sysfs /devices/platform/cpif/wakeup_events u:object_r:sysfs_dump_modem:s0
genfscon sysfs /devices/platform/cpif/modem/pcie_event_stats u:object_r:sysfs_dump_modem:s0
genfscon sysfs /devices/platform/cpif/wakeup_events u:object_r:sysfs_dump_modem:s0
genfscon sysfs /devices/platform/cpif/modem/pcie_event_stats u:object_r:sysfs_dump_modem:s0
genfscon sysfs /kernel/pixel_metrics/modem/modem_boot_duration u:object_r:sysfs_dump_modem:s0
genfscon sysfs /kernel/pixel_metrics/modem/modem_wakeup_ap u:object_r:sysfs_dump_modem:s0
genfscon sysfs /kernel/pixel_metrics/modem/pcie_link_state u:object_r:sysfs_dump_modem:s0
genfscon sysfs /kernel/pixel_metrics/modem/pcie_link_duration u:object_r:sysfs_dump_modem:s0
genfscon sysfs /kernel/pixel_metrics/modem/pcie_link_stats u:object_r:sysfs_dump_modem:s0
genfscon sysfs /kernel/pixel_metrics/modem/pcie_link_updown u:object_r:sysfs_dump_modem:s0