Merge "Dump 'external fragmentation unusable index'." am: b3701625d9 am: 8587fec4e1 (b6cb4068) · Commits · e / os / android_frameworks_native-old

cmds/dumpstate/dumpstate.cpp

+42 −1

Original line number	Original line	Diff line number	Diff line
	@@ -44,10 +44,12 @@
	#include <unistd.h>		#include <unistd.h>

	#include <chrono>		#include <chrono>
			#include <cmath>
	#include <fstream>		#include <fstream>
	#include <functional>		#include <functional>
	#include <future>		#include <future>
	#include <memory>		#include <memory>
			#include <numeric>
	#include <regex>		#include <regex>
	#include <set>		#include <set>
	#include <string>		#include <string>
	@@ -1232,6 +1234,45 @@ static void DumpHals() {
	}		}
	}		}

			static void DumpExternalFragmentationInfo() {
			struct stat st;
			if (stat("/proc/buddyinfo", &st) != 0) {
			MYLOGE("Unable to dump external fragmentation info\n");
			return;
			}

			printf("------ EXTERNAL FRAGMENTATION INFO ------\n");
			std::ifstream ifs("/proc/buddyinfo");
			auto unusable_index_regex = std::regex{"Node\\s+([0-9]+),\\s+zone\\s+(\\S+)\\s+(.*)"};
			for (std::string line; std::getline(ifs, line);) {
			std::smatch match_results;
			if (std::regex_match(line, match_results, unusable_index_regex)) {
			std::stringstream free_pages(std::string{match_results[3]});
			std::vector<int> free_pages_per_order(std::istream_iterator<int>{free_pages},
			std::istream_iterator<int>());

			int total_free_pages = 0;
			for (size_t i = 0; i < free_pages_per_order.size(); i++) {
			total_free_pages += (free_pages_per_order[i] * std::pow(2, i));
			}

			printf("Node %s, zone %8s", match_results[1].str().c_str(),
			match_results[2].str().c_str());

			int usable_free_pages = total_free_pages;
			for (size_t i = 0; i < free_pages_per_order.size(); i++) {
			auto unusable_index = (total_free_pages - usable_free_pages) /
			static_cast<double>(total_free_pages);
			printf(" %5.3f", unusable_index);
			usable_free_pages -= (free_pages_per_order[i] * std::pow(2, i));
			}

			printf("\n");
			}
			}
			printf("\n");
			}

	// Dumps various things. Returns early with status USER_CONSENT_DENIED if user denies consent		// Dumps various things. Returns early with status USER_CONSENT_DENIED if user denies consent
	// via the consent they are shown. Ignores other errors that occur while running various		// via the consent they are shown. Ignores other errors that occur while running various
	// commands. The consent checking is currently done around long running tasks, which happen to		// commands. The consent checking is currently done around long running tasks, which happen to
	@@ -1258,7 +1299,7 @@ static Dumpstate::RunStatus dumpstate() {
	DumpFile("ZONEINFO", "/proc/zoneinfo");		DumpFile("ZONEINFO", "/proc/zoneinfo");
	DumpFile("PAGETYPEINFO", "/proc/pagetypeinfo");		DumpFile("PAGETYPEINFO", "/proc/pagetypeinfo");
	DumpFile("BUDDYINFO", "/proc/buddyinfo");		DumpFile("BUDDYINFO", "/proc/buddyinfo");
	DumpFile("FRAGMENTATION INFO", "/d/extfrag/unusable_index");		DumpExternalFragmentationInfo();

	DumpFile("KERNEL WAKE SOURCES", "/d/wakeup_sources");		DumpFile("KERNEL WAKE SOURCES", "/d/wakeup_sources");
	DumpFile("KERNEL CPUFREQ", "/sys/devices/system/cpu/cpu0/cpufreq/stats/time_in_state");		DumpFile("KERNEL CPUFREQ", "/sys/devices/system/cpu/cpu0/cpufreq/stats/time_in_state");