commit 98624c374646a050556bdc402b55b792fefa7e55
author Elliott Hughes <enh@google.com> Tue Oct 15 16:51:17 2013 -0700
committer Elliott Hughes <enh@google.com> Tue Oct 15 16:51:17 2013 -0700
tree a55bf0e44ee1613a4e0765482c77e5eb16368ac2
parent dc9d8d050a43e1cd32f1337e79187124bb15d938

Make pthread_create report sched_setscheduler failures on LP64.

We couldn't fix this for 32-bit because there's too much broken
code out there. (Pretty much everyone asks for real-time
scheduling for all their threads, and the kernel says "don't be
stupid".)

Change-Id: I43c5271e6b6bb91278b9a19eec08cbf05391e3c4

libc/bionic/pthread_create.cpp

diff --git a/libc/bionic/pthread_create.cpp b/libc/bionic/pthread_create.cpp
index 8338ad5..d03b826 100644
--- a/libc/bionic/pthread_create.cpp
+++ b/libc/bionic/pthread_create.cpp
@@ -91,8 +91,10 @@
     struct sched_param param;
     param.sched_priority = thread->attr.sched_priority;
     if (sched_setscheduler(thread->tid, thread->attr.sched_policy, &param) == -1) {
-      // For backwards compatibility reasons, we just warn about failures here.
-      // error = errno;
+#if __LP64__
+      // For backwards compatibility reasons, we only report failures on 64-bit devices.
+      error = errno;
+#endif
       __libc_format_log(ANDROID_LOG_WARN, "libc",
                         "pthread_create sched_setscheduler call failed: %s", strerror(errno));
     }