linux/time64.h: Extract common header for vDSO

The vDSO library should only include the necessary headers required for
a userspace library (UAPI and a minimal set of kernel headers). To make
this possible it is necessary to isolate from the kernel headers the
common parts that are strictly necessary to build the library.

Split time64.h into linux and common headers to make the latter suitable
for inclusion in the vDSO library.

Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20200320145351.32292-13-vincenzo.frascino@arm.com

diff --git a/include/linux/time64.h b/include/linux/time64.h
index 1912548..c9dcb3e 100644 (file)
--- a/include/linux/time64.h
+++ b/include/linux/time64.h
@@ -3,6 +3,7 @@
 #define _LINUX_TIME64_H
 
 #include <linux/math64.h>
+#include <vdso/time64.h>
 
 typedef __s64 time64_t;
 typedef __u64 timeu64_t;
@@ -19,15 +20,6 @@ struct itimerspec64 {
        struct timespec64 it_value;
 };
 
-/* Parameters used to convert the timespec values: */
-#define MSEC_PER_SEC   1000L
-#define USEC_PER_MSEC  1000L
-#define NSEC_PER_USEC  1000L
-#define NSEC_PER_MSEC  1000000L
-#define USEC_PER_SEC   1000000L
-#define NSEC_PER_SEC   1000000000L
-#define FSEC_PER_SEC   1000000000000000LL
-
 /* Located here for timespec[64]_valid_strict */
 #define TIME64_MAX                     ((s64)~((u64)1 << 63))
 #define TIME64_MIN                     (-TIME64_MAX - 1)

diff --git a/include/vdso/time64.h b/include/vdso/time64.h
new file mode 100644 (file)
index 0000000..9d43c3f
--- /dev/null
+++ b/include/vdso/time64.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __VDSO_TIME64_H
+#define __VDSO_TIME64_H
+
+/* Parameters used to convert the timespec values: */
+#define MSEC_PER_SEC   1000L
+#define USEC_PER_MSEC  1000L
+#define NSEC_PER_USEC  1000L
+#define NSEC_PER_MSEC  1000000L
+#define USEC_PER_SEC   1000000L
+#define NSEC_PER_SEC   1000000000L
+#define FSEC_PER_SEC   1000000000000000LL
+
+#endif /* __VDSO_TIME64_H */