Merge changes from topic "ion memory accounting"
am: 5ded8c130c
Change-Id: I23271d3d84b18411672230e6e80ef534e0066996
diff --git a/core/java/android/os/Debug.java b/core/java/android/os/Debug.java
index bf26a41..422761c 100644
--- a/core/java/android/os/Debug.java
+++ b/core/java/android/os/Debug.java
@@ -2503,4 +2503,27 @@
* @hide
*/
public static native long getZramFreeKb();
+
+ /**
+ * Return memory size in kilobytes allocated for ION heaps.
+ *
+ * @hide
+ */
+ public static native long getIonHeapsSizeKb();
+
+ /**
+ * Return memory size in kilobytes allocated for ION pools.
+ *
+ * @hide
+ */
+ public static native long getIonPoolsSizeKb();
+
+ /**
+ * Return ION memory mapped by processes in kB.
+ * Notes:
+ * * Warning: Might impact performance as it reads /proc/<pid>/maps files for each process.
+ *
+ * @hide
+ */
+ public static native long getIonMappedSizeKb();
}
diff --git a/core/java/com/android/internal/util/MemInfoReader.java b/core/java/com/android/internal/util/MemInfoReader.java
index c1d129b..362bc92 100644
--- a/core/java/com/android/internal/util/MemInfoReader.java
+++ b/core/java/com/android/internal/util/MemInfoReader.java
@@ -91,7 +91,15 @@
* that are mapped in to processes.
*/
public long getCachedSizeKb() {
- return mInfos[Debug.MEMINFO_BUFFERS] + mInfos[Debug.MEMINFO_SLAB_RECLAIMABLE]
+ long kReclaimable = mInfos[Debug.MEMINFO_KRECLAIMABLE];
+
+ // Note: MEMINFO_KRECLAIMABLE includes MEMINFO_SLAB_RECLAIMABLE and ION pools.
+ // Fall back to using MEMINFO_SLAB_RECLAIMABLE in case of older kernels that do
+ // not include KReclaimable meminfo field.
+ if (kReclaimable == 0) {
+ kReclaimable = mInfos[Debug.MEMINFO_SLAB_RECLAIMABLE];
+ }
+ return mInfos[Debug.MEMINFO_BUFFERS] + kReclaimable
+ mInfos[Debug.MEMINFO_CACHED] - mInfos[Debug.MEMINFO_MAPPED];
}
diff --git a/core/jni/Android.bp b/core/jni/Android.bp
index 49c029c..f68fd57 100644
--- a/core/jni/Android.bp
+++ b/core/jni/Android.bp
@@ -233,6 +233,7 @@
static_libs: [
"libasync_safe",
+ "libdmabufinfo",
"libgif",
"libseccomp_policy",
"libgrallocusage",
diff --git a/core/jni/android_os_Debug.cpp b/core/jni/android_os_Debug.cpp
index 6aed1e8..1ff28fe 100644
--- a/core/jni/android_os_Debug.cpp
+++ b/core/jni/android_os_Debug.cpp
@@ -43,6 +43,7 @@
#include <nativehelper/JNIHelp.h>
#include <nativehelper/ScopedUtfChars.h>
#include "jni.h"
+#include <dmabufinfo/dmabufinfo.h>
#include <meminfo/procmeminfo.h>
#include <meminfo/sysmeminfo.h>
#include <memtrack/memtrack.h>
@@ -779,6 +780,59 @@
return zramFreeKb;
}
+static jlong android_os_Debug_getIonHeapsSizeKb(JNIEnv* env, jobject clazz) {
+ jlong heapsSizeKb = 0;
+ uint64_t size;
+
+ if (meminfo::ReadIonHeapsSizeKb(&size)) {
+ heapsSizeKb = size;
+ }
+
+ return heapsSizeKb;
+}
+
+static jlong android_os_Debug_getIonPoolsSizeKb(JNIEnv* env, jobject clazz) {
+ jlong poolsSizeKb = 0;
+ uint64_t size;
+
+ if (meminfo::ReadIonPoolsSizeKb(&size)) {
+ poolsSizeKb = size;
+ }
+
+ return poolsSizeKb;
+}
+
+static jlong android_os_Debug_getIonMappedSizeKb(JNIEnv* env, jobject clazz) {
+ jlong ionPss = 0;
+ std::vector<dmabufinfo::DmaBuffer> dmabufs;
+
+ std::unique_ptr<DIR, int (*)(DIR*)> dir(opendir("/proc"), closedir);
+ if (!dir) {
+ LOG(ERROR) << "Failed to open /proc directory";
+ return false;
+ }
+
+ struct dirent* dent;
+ while ((dent = readdir(dir.get()))) {
+ if (dent->d_type != DT_DIR) continue;
+
+ int pid = atoi(dent->d_name);
+ if (pid == 0) {
+ continue;
+ }
+
+ if (!AppendDmaBufInfo(pid, &dmabufs, false)) {
+ LOG(ERROR) << "Failed to read maps for pid " << pid;
+ }
+ }
+
+ for (dmabufinfo::DmaBuffer buf : dmabufs) {
+ ionPss += buf.size() / 1024;
+ }
+
+ return ionPss;
+}
+
/*
* JNI registration.
*/
@@ -822,6 +876,12 @@
(void*)android_os_Debug_getUnreachableMemory },
{ "getZramFreeKb", "()J",
(void*)android_os_Debug_getFreeZramKb },
+ { "getIonHeapsSizeKb", "()J",
+ (void*)android_os_Debug_getIonHeapsSizeKb },
+ { "getIonPoolsSizeKb", "()J",
+ (void*)android_os_Debug_getIonPoolsSizeKb },
+ { "getIonMappedSizeKb", "()J",
+ (void*)android_os_Debug_getIonMappedSizeKb },
};
int register_android_os_Debug(JNIEnv *env)
diff --git a/services/core/java/com/android/server/am/ActivityManagerService.java b/services/core/java/com/android/server/am/ActivityManagerService.java
index 35774ed..1c4f1e3 100644
--- a/services/core/java/com/android/server/am/ActivityManagerService.java
+++ b/services/core/java/com/android/server/am/ActivityManagerService.java
@@ -12799,14 +12799,31 @@
pw.println(totalPss - cachedPss);
}
}
- long lostRAM = memInfo.getTotalSizeKb() - (totalPss - totalSwapPss)
+ long kernelUsed = memInfo.getKernelUsedSizeKb();
+ final long ionHeap = Debug.getIonHeapsSizeKb();
+ if (ionHeap > 0) {
+ final long ionMapped = Debug.getIonMappedSizeKb();
+ final long ionUnmapped = ionHeap - ionMapped;
+ final long ionPool = Debug.getIonPoolsSizeKb();
+ pw.print(" ION: ");
+ pw.print(stringifyKBSize(ionHeap + ionPool));
+ pw.print(" (");
+ pw.print(stringifyKBSize(ionMapped));
+ pw.print(" mapped + ");
+ pw.print(stringifyKBSize(ionUnmapped));
+ pw.print(" unmapped + ");
+ pw.print(stringifyKBSize(ionPool));
+ pw.println(" pools)");
+ kernelUsed += ionUnmapped;
+ }
+ final long lostRAM = memInfo.getTotalSizeKb() - (totalPss - totalSwapPss)
- memInfo.getFreeSizeKb() - memInfo.getCachedSizeKb()
- - memInfo.getKernelUsedSizeKb() - memInfo.getZramTotalSizeKb();
+ - kernelUsed - memInfo.getZramTotalSizeKb();
if (!opts.isCompact) {
pw.print(" Used RAM: "); pw.print(stringifyKBSize(totalPss - cachedPss
- + memInfo.getKernelUsedSizeKb())); pw.print(" (");
+ + kernelUsed)); pw.print(" (");
pw.print(stringifyKBSize(totalPss - cachedPss)); pw.print(" used pss + ");
- pw.print(stringifyKBSize(memInfo.getKernelUsedSizeKb())); pw.print(" kernel)\n");
+ pw.print(stringifyKBSize(kernelUsed)); pw.print(" kernel)\n");
pw.print(" Lost RAM: "); pw.println(stringifyKBSize(lostRAM));
} else {
pw.print("lostram,"); pw.println(lostRAM);
@@ -13525,14 +13542,25 @@
memInfoBuilder.append(stringifyKBSize(cachedPss + memInfo.getCachedSizeKb()
+ memInfo.getFreeSizeKb()));
memInfoBuilder.append("\n");
+ long kernelUsed = memInfo.getKernelUsedSizeKb();
+ final long ionHeap = Debug.getIonHeapsSizeKb();
+ if (ionHeap > 0) {
+ final long ionMapped = Debug.getIonMappedSizeKb();
+ final long ionUnmapped = ionHeap - ionMapped;
+ final long ionPool = Debug.getIonPoolsSizeKb();
+ memInfoBuilder.append(" ION: ");
+ memInfoBuilder.append(stringifyKBSize(ionHeap + ionPool));
+ memInfoBuilder.append("\n");
+ kernelUsed += ionUnmapped;
+ }
memInfoBuilder.append(" Used RAM: ");
memInfoBuilder.append(stringifyKBSize(
- totalPss - cachedPss + memInfo.getKernelUsedSizeKb()));
+ totalPss - cachedPss + kernelUsed));
memInfoBuilder.append("\n");
memInfoBuilder.append(" Lost RAM: ");
memInfoBuilder.append(stringifyKBSize(memInfo.getTotalSizeKb()
- (totalPss - totalSwapPss) - memInfo.getFreeSizeKb() - memInfo.getCachedSizeKb()
- - memInfo.getKernelUsedSizeKb() - memInfo.getZramTotalSizeKb()));
+ - kernelUsed - memInfo.getZramTotalSizeKb()));
memInfoBuilder.append("\n");
Slog.i(TAG, "Low on memory:");
Slog.i(TAG, shortNativeBuilder.toString());