traced_probes: Implement BatteryCounters for CrOS and Linux
CrOS and Linux doesn't have the Android hwbinder for getting battery
counters. Implement data source "linux.sysfs_power" that reads the
counters from sysfs (e.g. /sys/class/power_supply/BAT0) entries:
* capacity: battery capacity in percentage.
* charge_now: the current coloumb counter value in uAh.
* current_now: the current in uA.
* current_avg: the smoothed (average over a period) current in uA.
Bug: 204738136
Change-Id: I8f9ddff84967e3a823e83381dee8031720b7ab26
diff --git a/BUILD b/BUILD
index 9563781..f131165 100644
--- a/BUILD
+++ b/BUILD
@@ -1629,6 +1629,8 @@
srcs = [
"src/traced/probes/power/android_power_data_source.cc",
"src/traced/probes/power/android_power_data_source.h",
+ "src/traced/probes/power/linux_power_sysfs_data_source.cc",
+ "src/traced/probes/power/linux_power_sysfs_data_source.h",
],
)
