sysinfo: Move struct sysinfo to a separate header file

struct sysinfo is just about the only thing exported to userspace from
<linux/kernel.h>, so move it into a separate header file with a
residual #include in <linux/kernel.h>.

Originally-by: H. J. Lu <hjl.tools@gmail.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Link: http://lkml.kernel.org/n/tip-4pr1xnnksprt7t0h3w5fw4rv@git.kernel.org

diff --git a/include/linux/Kbuild b/include/linux/Kbuild
index c94e71781b7983dd537f9b99e76ab106caf1d390..8446086776656f0825f77fd1cde1c62bd1a50484 100644 (file)
--- a/include/linux/Kbuild
+++ b/include/linux/Kbuild
@@ -355,6 +355,7 @@ header-y += suspend_ioctls.h
 header-y += swab.h
 header-y += synclink.h
 header-y += sysctl.h
+header-y += sysinfo.h
 header-y += taskstats.h
 header-y += tcp.h
 header-y += telephony.h

diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index e8343422240a8ca981dbd5b5971ccef6c30d1382..dc6a50f88ca7ba1deb18fe9a47bff3dad9af1977 100644 (file)
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -1,6 +1,8 @@
 #ifndef _LINUX_KERNEL_H
 #define _LINUX_KERNEL_H
 
+#include <linux/sysinfo.h>
+
 /*
  * 'kernel.h' contains some often-used function prototypes etc
  */
@@ -745,27 +747,8 @@ extern int __build_bug_on_failed;
 # define REBUILD_DUE_TO_FTRACE_MCOUNT_RECORD
 #endif
 
-struct sysinfo;
 extern int do_sysinfo(struct sysinfo *info);
 
 #endif /* __KERNEL__ */
 
-#define SI_LOAD_SHIFT  16
-struct sysinfo {
-       long uptime;                    /* Seconds since boot */
-       unsigned long loads[3];         /* 1, 5, and 15 minute load averages */
-       unsigned long totalram;         /* Total usable main memory size */
-       unsigned long freeram;          /* Available memory size */
-       unsigned long sharedram;        /* Amount of shared memory */
-       unsigned long bufferram;        /* Memory used by buffers */
-       unsigned long totalswap;        /* Total swap space size */
-       unsigned long freeswap;         /* swap space still available */
-       unsigned short procs;           /* Number of current processes */
-       unsigned short pad;             /* explicit padding for m68k */
-       unsigned long totalhigh;        /* Total high memory size */
-       unsigned long freehigh;         /* Available high memory size */
-       unsigned int mem_unit;          /* Memory unit size in bytes */
-       char _f[20-2*sizeof(long)-sizeof(int)]; /* Padding: libc5 uses this.. */
-};
-
 #endif

diff --git a/include/linux/sysinfo.h b/include/linux/sysinfo.h
new file mode 100644 (file)
index 0000000..ec4fc22
--- /dev/null
+++ b/include/linux/sysinfo.h
@@ -0,0 +1,22 @@
+#ifndef _LINUX_SYSINFO_H
+#define _LINUX_SYSINFO_H
+
+#define SI_LOAD_SHIFT  16
+struct sysinfo {
+       long uptime;                    /* Seconds since boot */
+       unsigned long loads[3];         /* 1, 5, and 15 minute load averages */
+       unsigned long totalram;         /* Total usable main memory size */
+       unsigned long freeram;          /* Available memory size */
+       unsigned long sharedram;        /* Amount of shared memory */
+       unsigned long bufferram;        /* Memory used by buffers */
+       unsigned long totalswap;        /* Total swap space size */
+       unsigned long freeswap;         /* swap space still available */
+       unsigned short procs;           /* Number of current processes */
+       unsigned short pad;             /* explicit padding for m68k */
+       unsigned long totalhigh;        /* Total high memory size */
+       unsigned long freehigh;         /* Available high memory size */
+       unsigned int mem_unit;          /* Memory unit size in bytes */
+       char _f[20-2*sizeof(long)-sizeof(int)]; /* Padding: libc5 uses this.. */
+};
+
+#endif /* _LINUX_SYSINFO_H */