diff options
| author | Suren Baghdasaryan <surenb@google.com> | 2019-12-18 09:52:42 -0800 |
|---|---|---|
| committer | Suren Baghdasaryan <surenb@google.com> | 2020-01-02 13:36:34 -0800 |
| commit | 2018bf03f9fd96aa0326d74f23abdbaa3d4ee143 (patch) | |
| tree | 6fd16205a305b31a8a5b60c6f7eb23c6df1d7b68 /core/java/android/os/Debug.java | |
| parent | 5a049f5cf22d2eb5c7c4974fbf282427cb418ece (diff) | |
Prevent double-counting of kernel stack size in dumpsys reports
When kernel is configured with CONFIG_VMAP_STACK=y kernel stacks are mapped
into process space and therefore already accounted as part of the value
returned by ReadVmallocInfo and reported under MEMINFO_VM_ALLOC_USED
category. Introduce isVmapStack function to check if kernel is configured
with that option and if so do not exclude kernel stack size in the
calculation of memory used by kernel.
Bug: 146088882
Test: dumpsys meminfo with CONFIG_VMAP_STACK enabled and disabled
Change-Id: I9230bbf0ab05524cf52ded35171fd9ec3da16fa0
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Diffstat (limited to 'core/java/android/os/Debug.java')
| -rw-r--r-- | core/java/android/os/Debug.java | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/core/java/android/os/Debug.java b/core/java/android/os/Debug.java index 422761c4dca5..d7ed05577697 100644 --- a/core/java/android/os/Debug.java +++ b/core/java/android/os/Debug.java @@ -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(); } |