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authorVincenzo Frascino <vincenzo.frascino@arm.com>2020-03-20 14:53:38 +0000
committerThomas Gleixner <tglx@linutronix.de>2020-03-21 15:23:58 +0100
commit97b01d2eabd8c0fa650a9d513febeae35dbc6de4 (patch)
tree47b32f208bd877fc059978f956167fd03611bab4
parentb72a9c5e023bf405e62b858eb5384eb34e2b7a74 (diff)
linux/jiffies.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 jiffies.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/20200320145351.32292-14-vincenzo.frascino@arm.com
-rw-r--r--include/linux/jiffies.h4
-rw-r--r--include/vdso/jiffies.h11
2 files changed, 12 insertions, 3 deletions
diff --git a/include/linux/jiffies.h b/include/linux/jiffies.h
index e3279ef24d28..fed6ba96c527 100644
--- a/include/linux/jiffies.h
+++ b/include/linux/jiffies.h
@@ -8,6 +8,7 @@
#include <linux/types.h>
#include <linux/time.h>
#include <linux/timex.h>
+#include <vdso/jiffies.h>
#include <asm/param.h> /* for HZ */
#include <generated/timeconst.h>
@@ -59,9 +60,6 @@
extern int register_refined_jiffies(long clock_tick_rate);
-/* TICK_NSEC is the time between ticks in nsec assuming SHIFTED_HZ */
-#define TICK_NSEC ((NSEC_PER_SEC+HZ/2)/HZ)
-
/* TICK_USEC is the time between ticks in usec assuming SHIFTED_HZ */
#define TICK_USEC ((USEC_PER_SEC + HZ/2) / HZ)
diff --git a/include/vdso/jiffies.h b/include/vdso/jiffies.h
new file mode 100644
index 000000000000..2f9d596c8b29
--- /dev/null
+++ b/include/vdso/jiffies.h
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __VDSO_JIFFIES_H
+#define __VDSO_JIFFIES_H
+
+#include <asm/param.h> /* for HZ */
+#include <vdso/time64.h>
+
+/* TICK_NSEC is the time between ticks in nsec assuming SHIFTED_HZ */
+#define TICK_NSEC ((NSEC_PER_SEC+HZ/2)/HZ)
+
+#endif /* __VDSO_JIFFIES_H */