Merge "Prevent double-counting of kernel stack size in dumpsys reports" (9493f0ed) · Commits · e / os / android_frameworks_base

core/java/android/os/Debug.java

+8 −0

Original line number	Diff line number	Diff line
		@@ -2526,4 +2526,12 @@ public final class Debug
		* @hide
		*/
		public static native long getIonMappedSizeKb();

		/**
		* Return whether virtually-mapped kernel stacks are enabled (CONFIG_VMAP_STACK).
		* Note: caller needs config_gz read sepolicy permission
		*
		* @hide
		*/
		public static native boolean isVmapStack();
		}

+6 −3

Original line number	Diff line number	Diff line
		@@ -107,9 +107,12 @@ public final class MemInfoReader {
		* Amount of RAM that is in use by the kernel for actual allocations.
		*/
		public long getKernelUsedSizeKb() {
		return mInfos[Debug.MEMINFO_SHMEM] + mInfos[Debug.MEMINFO_SLAB_UNRECLAIMABLE]
		+ mInfos[Debug.MEMINFO_VM_ALLOC_USED] + mInfos[Debug.MEMINFO_PAGE_TABLES]
		+ mInfos[Debug.MEMINFO_KERNEL_STACK];
		long size = mInfos[Debug.MEMINFO_SHMEM] + mInfos[Debug.MEMINFO_SLAB_UNRECLAIMABLE]
		+ mInfos[Debug.MEMINFO_VM_ALLOC_USED] + mInfos[Debug.MEMINFO_PAGE_TABLES];
		if (!Debug.isVmapStack()) {
		size += mInfos[Debug.MEMINFO_KERNEL_STACK];
		}
		return size;
		}

		public long getSwapTotalSizeKb() {

+20 −0

Original line number	Diff line number	Diff line
		@@ -50,6 +50,7 @@
		#include <memunreachable/memunreachable.h>
		#include <android-base/strings.h>
		#include "android_os_Debug.h"
		#include <vintf/VintfObject.h>

		namespace android
		{
		@@ -833,6 +834,23 @@ static jlong android_os_Debug_getIonMappedSizeKb(JNIEnv* env, jobject clazz) {
		return ionPss;
		}

		static jboolean android_os_Debug_isVmapStack(JNIEnv *env, jobject clazz)
		{
		static enum {
		CONFIG_UNKNOWN,
		CONFIG_SET,
		CONFIG_UNSET,
		} cfg_state = CONFIG_UNKNOWN;

		if (cfg_state == CONFIG_UNKNOWN) {
		const std::map<std::string, std::string> configs =
		vintf::VintfObject::GetInstance()->getRuntimeInfo()->kernelConfigs();
		std::map<std::string, std::string>::const_iterator it = configs.find("CONFIG_VMAP_STACK");
		cfg_state = (it != configs.end() && it->second == "y") ? CONFIG_SET : CONFIG_UNSET;
		}
		return cfg_state == CONFIG_SET;
		}

		/*
		* JNI registration.
		*/
		@@ -882,6 +900,8 @@ static const JNINativeMethod gMethods[] = {
		(void*)android_os_Debug_getIonPoolsSizeKb },
		{ "getIonMappedSizeKb", "()J",
		(void*)android_os_Debug_getIonMappedSizeKb },
		{ "isVmapStack", "()Z",
		(void*)android_os_Debug_isVmapStack },
		};

		int register_android_os_Debug(JNIEnv *env)