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Add total DMA-BUF heap pool size information to dumpsys meminfo

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Some DMA-BUF heaps maintain pools of pre-zeroed memory for faster
allocations. Print the total size of all DMA-BUF heap pools as part of
dumpsys meminfo and use the same in LostRam calculation.

Test: dumpsys meminfo
Bug: 167709539
Change-Id: Ifb61fe596c1a8fab1bd536ec904285e532629b71
Merged-In: Ifb61fe596c1a8fab1bd536ec904285e532629b71
This commit is contained in:
Hridya Valsaraju
2021-02-04 15:55:02 -08:00
parent 363d44d7a0
commit 365ffff4b5
3 changed files with 42 additions and 2 deletions
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8
core/java/android/os/Debug.java
View File

@@ -2566,6 +2566,14 @@ public final class Debug
*/
public static native long getIonHeapsSizeKb();
/**
* Return memory size in kilobytes allocated for DMA-BUF heap pools or -1 if
* /sys/kernel/dma_heap/total_pools_kb could not be read.
*
* @hide
*/
public static native long getDmabufHeapPoolsSizeKb();
/**
* Return memory size in kilobytes allocated for ION pools or -1 if
* /sys/kernel/ion/total_pools_kb could not be read.

13
core/jni/android_os_Debug.cpp
View File

@@ -824,6 +824,17 @@ static jlong android_os_Debug_getIonPoolsSizeKb(JNIEnv* env, jobject clazz) {
return poolsSizeKb;
}
static jlong android_os_Debug_getDmabufHeapPoolsSizeKb(JNIEnv* env, jobject clazz) {
jlong poolsSizeKb = -1;
uint64_t size;
if (meminfo::ReadDmabufHeapPoolsSizeKb(&size)) {
poolsSizeKb = size;
}
return poolsSizeKb;
}
static jlong android_os_Debug_getDmabufMappedSizeKb(JNIEnv* env, jobject clazz) {
jlong dmabufPss = 0;
std::vector<dmabufinfo::DmaBuffer> dmabufs;
@@ -936,6 +947,8 @@ static const JNINativeMethod gMethods[] = {
(void*)android_os_Debug_getIonPoolsSizeKb },
{ "getDmabufMappedSizeKb", "()J",
(void*)android_os_Debug_getDmabufMappedSizeKb },
{ "getDmabufHeapPoolsSizeKb", "()J",
(void*)android_os_Debug_getDmabufHeapPoolsSizeKb },
{ "getGpuTotalUsageKb", "()J",
(void*)android_os_Debug_getGpuTotalUsageKb },
{ "isVmapStack", "()Z",

23
services/core/java/com/android/server/am/ActivityManagerService.java
View File

@@ -13756,14 +13756,23 @@ public class ActivityManagerService extends IActivityManager.Stub
pw.print(" mapped + ");
pw.print(stringifyKBSize(dmabufUnmapped));
pw.println(" unmapped)");
// TODO(b/167709539): also add pooled memory from DMA-BUF heaps
kernelUsed += totalExportedDmabuf;
}
final long totalDmabufHeapPool = Debug.getDmabufHeapPoolsSizeKb();
if (totalDmabufHeapPool >= 0) {
pw.print("DMA-BUF Heaps pool: ");
pw.println(stringifyKBSize(totalDmabufHeapPool));
}
}
final long gpuUsage = Debug.getGpuTotalUsageKb();
if (gpuUsage >= 0) {
pw.print(" GPU: "); pw.println(stringifyKBSize(gpuUsage));
}
/*
* Note: ION/DMA-BUF heap pools are reclaimable and hence, they are included as part of
* memInfo.getCachedSizeKb().
*/
final long lostRAM = memInfo.getTotalSizeKb() - (totalPss - totalSwapPss)
- memInfo.getFreeSizeKb() - memInfo.getCachedSizeKb()
- kernelUsed - memInfo.getZramTotalSizeKb();
@@ -14575,9 +14584,14 @@ public class ActivityManagerService extends IActivityManager.Stub
memInfoBuilder.append("DMA-BUF: ");
memInfoBuilder.append(stringifyKBSize(totalExportedDmabuf));
memInfoBuilder.append("\n");
// TODO(b/167709539): also add pooled memory from DMA-BUF heaps
kernelUsed += totalExportedDmabuf;
}
final long totalDmabufHeapPool = Debug.getDmabufHeapPoolsSizeKb();
if (totalDmabufHeapPool >= 0) {
memInfoBuilder.append("DMA-BUF Heaps pool: ");
memInfoBuilder.append(stringifyKBSize(totalDmabufHeapPool));
memInfoBuilder.append("\n");
}
}
final long gpuUsage = Debug.getGpuTotalUsageKb();
@@ -14590,6 +14604,11 @@ public class ActivityManagerService extends IActivityManager.Stub
memInfoBuilder.append(stringifyKBSize(
totalPss - cachedPss + kernelUsed));
memInfoBuilder.append("\n");
/*
* Note: ION/DMA-BUF heap pools are reclaimable and hence, they are included as part of
* memInfo.getCachedSizeKb().
*/
memInfoBuilder.append(" Lost RAM: ");
memInfoBuilder.append(stringifyKBSize(memInfo.getTotalSizeKb()
- (totalPss - totalSwapPss) - memInfo.getFreeSizeKb() - memInfo.getCachedSizeKb()