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Commit 365ffff4 authored by Hridya Valsaraju's avatar Hridya Valsaraju
Browse files

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

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
parent 363d44d7

core/java/android/os/Debug.java

+8 −0
Original line number Diff line number Diff line
@@ -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.

core/jni/android_os_Debug.cpp

+13 −0
Original line number Diff line number Diff line
@@ -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",

services/core/java/com/android/server/am/ActivityManagerService.java

+21 −2
Original line number Diff line number Diff line
@@ -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()