From: David Heidelberger <david.heidelberger@ixit.cz>
Subject: uapi/kernel.h: glibc specific inclusion of sysinfo.h

including sysinfo.h from kernel.h makes no sense whatsoever,
but removing it breaks glibc's userspace header,
which includes kernel.h instead of sysinfo.h from their sys/sysinfo.h.
this seems to be a historical mistake.
on musl, including any header that uses kernel.h directly or indirectly
plus sys/sysinfo.h will produce a compile error due to redefinition of
struct sysinfo from sys/sysinfo.h.
so for now, only include it on glibc or when including from kernel
in order not to break their headers.

Signed-off-by: John Spencer <maillist-linux@barfooze.de>
Signed-off-by: David Heidelberger <david.heidelberger@ixit.cz>
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
---
 include/uapi/linux/kernel.h | 2 ++
 1 file changed, 2 insertions(+)

--- a/include/uapi/linux/kernel.h
+++ b/include/uapi/linux/kernel.h
@@ -2,7 +2,9 @@
 #ifndef _UAPI_LINUX_KERNEL_H
 #define _UAPI_LINUX_KERNEL_H
 
+#if defined(__KERNEL__) || defined( __GLIBC__)
 #include <linux/sysinfo.h>
+#endif
 
 /*
  * 'kernel.h' contains some often-used function prototypes etc