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| author | Ioannis Ilkos <ilkos@google.com> | 2021-03-25 15:44:03 +0000 |
|---|---|---|
| committer | Ioannis Ilkos <ilkos@google.com> | 2021-03-30 10:38:10 +0100 |
| commit | 228fc0293b498cbb29f08d6eeec3dda2545dddbc (patch) | |
| tree | d510469022b9fa66ba5d22a1b4cc450764f93186 /core/jni/AndroidRuntime.cpp | |
| parent | 1d70937fe795e7d879e496ee192f1621a7ce0cbb (diff) | |
Per process DMA-BUF stats
In order to detect memory regressions caused by improper handling of
dma-buf buffers we need to measure how this memory is used.
This change:
- Introduces DmabufInfoReader which wraps libmeminfo and provides
per-process DMA-BUF stats.
- Specifically, measures buffers mapped to the process address space
(from /proc/pid/maps). This is supported on all devices.
- For devices running 5.4+ (where the system processes can query fdinfo)
also measures the total retained memory (either by mmap or an open fd).
- Introduces a statsd atom that collects this for all running managed
processes. Non-managed processes will also hold dmabufs, but the
likelihood of them causing issues (post-launch) is smaller so I am
trading them off for cheaper collection (if indeed we encounter such
problems, they will definitely be caught by the total dmabuf counters).
Test: manual
Bug: 183708249
Change-Id: I5e0ef58ac1a66ebe2d280c5733de46ba84f75a46
Diffstat (limited to 'core/jni/AndroidRuntime.cpp')
| -rw-r--r-- | core/jni/AndroidRuntime.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/core/jni/AndroidRuntime.cpp b/core/jni/AndroidRuntime.cpp index 0c3f265b84cc..6636b1f6327b 100644 --- a/core/jni/AndroidRuntime.cpp +++ b/core/jni/AndroidRuntime.cpp @@ -191,6 +191,7 @@ extern int register_com_android_internal_content_NativeLibraryHelper(JNIEnv *env extern int register_com_android_internal_content_om_OverlayConfig(JNIEnv *env); extern int register_com_android_internal_net_NetworkUtilsInternal(JNIEnv* env); extern int register_com_android_internal_os_ClassLoaderFactory(JNIEnv* env); +extern int register_com_android_internal_os_DmabufInfoReader(JNIEnv* env); extern int register_com_android_internal_os_FuseAppLoop(JNIEnv* env); extern int register_com_android_internal_os_KernelCpuBpfTracking(JNIEnv* env); extern int register_com_android_internal_os_KernelCpuTotalBpfMapReader(JNIEnv* env); @@ -1616,6 +1617,7 @@ static const RegJNIRec gRegJNI[] = { REG_JNI(register_android_animation_PropertyValuesHolder), REG_JNI(register_android_security_Scrypt), REG_JNI(register_com_android_internal_content_NativeLibraryHelper), + REG_JNI(register_com_android_internal_os_DmabufInfoReader), REG_JNI(register_com_android_internal_os_FuseAppLoop), REG_JNI(register_com_android_internal_os_KernelCpuBpfTracking), REG_JNI(register_com_android_internal_os_KernelCpuTotalBpfMapReader), |