commit e95bbc1af75afadb9c1a280f4c9cbd4041d28db2
author Tim Murray <timmurray@google.com> Wed Mar 22 22:04:32 2017 -0700
committer gitbuildkicker <android-build@google.com> Thu Mar 23 16:36:49 2017 -0700
tree 176f1606d0bc58cdc520116468c6991b7a4c1f4a
parent 76bf9998738d4f5f361e1e578161175ddee0cd29

add support for BINDER_SET_INHERIT_FIFO_PRIO ioctl

Test: works
bug 36516194

Change-Id: Ib23559026dfb741d4371197d3d3a8a0a726e3b9e
(cherry picked from commit 7847c447d36ab8c419b1693df841b18dcfa412df)

service.cpp

diff --git a/service.cpp b/service.cpp
index 755e463..2057851 100644
--- a/service.cpp
+++ b/service.cpp
@@ -101,8 +101,16 @@
     IPCThreadState::self()->setTheContextObject(service);
     // Then tell binder kernel
     ioctl(binder_fd, BINDER_SET_CONTEXT_MGR, 0);
+    // Only enable FIFO inheritance for hwbinder
+    // FIXME: remove define when in the kernel
+#define BINDER_SET_INHERIT_FIFO_PRIO    _IO('b', 10)
 
-    int rc = property_set("hwservicemanager.ready", "true");
+    int rc = ioctl(binder_fd, BINDER_SET_INHERIT_FIFO_PRIO);
+    if (rc) {
+        ALOGE("BINDER_SET_INHERIT_FIFO_PRIO failed with error %d\n", rc);
+    }
+
+    rc = property_set("hwservicemanager.ready", "true");
     if (rc) {
     ALOGE("Failed to set \"hwservicemanager.ready\" (error %d). "\
           "HAL services will not launch!\n", rc);