diff mbox

RISC-V: don't assume PI mutexes and robust futexes before 4.20 (bug 23864)

Message ID mvmbm72jz58.fsf@suse.de
State Committed
Commit 295132ff052b32960207d82a950c0efbf0766857
Headers

Commit Message

Andreas Schwab Nov. 6, 2018, 10:09 a.m. UTC 
  Support for futex_cmpxchg as only been added to 4.20-rc1.

Andreas.

	[BZ #23864]
	* sysdeps/unix/sysv/linux/riscv/kernel-features.h
	(__ASSUME_SET_ROBUST_LIST) [__LINUX_KERNEL_VERSION < 0x041400]:
	Undef.
---
 sysdeps/unix/sysv/linux/riscv/kernel-features.h | 5 +++++
 1 file changed, 5 insertions(+)
diff mbox

Patch

diff --git a/sysdeps/unix/sysv/linux/riscv/kernel-features.h b/sysdeps/unix/sysv/linux/riscv/kernel-features.h
index 37f4d99a92..d21c824624 100644
--- a/sysdeps/unix/sysv/linux/riscv/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/riscv/kernel-features.h
@@ -21,3 +21,8 @@ 
 
 #undef __ASSUME_CLONE_DEFAULT
 #define __ASSUME_CLONE_BACKWARDS 1
+
+/* No support for PI mutexes or robust futexes before 4.20.  */
+#if __LINUX_KERNEL_VERSION < 0x041400
+# undef __ASSUME_SET_ROBUST_LIST
+#endif