Update to v5.10 kernel headers.
Kernel headers coming from:
Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-5.10
Test: Built cuttlefish and flame images. Ran bionic unit tests on both.
Change-Id: I37ffc850970adcce1febbe2269c202632fce763a
diff --git a/libc/kernel/uapi/linux/pidfd.h b/libc/kernel/uapi/linux/pidfd.h
new file mode 100644
index 0000000..cd60118
--- /dev/null
+++ b/libc/kernel/uapi/linux/pidfd.h
@@ -0,0 +1,24 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ *** This header was automatically generated from a Linux kernel header
+ *** of the same name, to make information necessary for userspace to
+ *** call into the kernel available to libc. It contains only constants,
+ *** structures, and macros generated from the original header, and thus,
+ *** contains no copyrightable information.
+ ***
+ *** To edit the content of this header, modify the corresponding
+ *** source file (e.g. under external/kernel-headers/original/) then
+ *** run bionic/libc/kernel/tools/update_all.py
+ ***
+ *** Any manual change here will be lost the next time this script will
+ *** be run. You've been warned!
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef _UAPI_LINUX_PIDFD_H
+#define _UAPI_LINUX_PIDFD_H
+#include <linux/types.h>
+#include <linux/fcntl.h>
+#define PIDFD_NONBLOCK O_NONBLOCK
+#endif