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authorVincenzo Frascino <vincenzo.frascino@arm.com>2020-03-20 14:53:33 +0000
committerThomas Gleixner <tglx@linutronix.de>2020-03-21 15:23:56 +0100
commit14ee2ac618e49e767c9af4aa007f951eb9e35153 (patch)
treee4b8470afed3c62e67459df6cfb932cf36330d9e /include/vdso
parent17e46656a82fc4645324043241b3294f6db9a6ce (diff)
linux/clocksource.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 clocksource.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/20200320145351.32292-9-vincenzo.frascino@arm.com
Diffstat (limited to 'include/vdso')
-rw-r--r--include/vdso/clocksource.h23
1 files changed, 23 insertions, 0 deletions
diff --git a/include/vdso/clocksource.h b/include/vdso/clocksource.h
new file mode 100644
index 000000000000..ab58330e4e5d
--- /dev/null
+++ b/include/vdso/clocksource.h
@@ -0,0 +1,23 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __VDSO_CLOCKSOURCE_H
+#define __VDSO_CLOCKSOURCE_H
+
+#include <vdso/limits.h>
+
+#if defined(CONFIG_ARCH_CLOCKSOURCE_DATA) || \
+ defined(CONFIG_GENERIC_GETTIMEOFDAY)
+#include <asm/vdso/clocksource.h>
+#endif /* CONFIG_ARCH_CLOCKSOURCE_DATA || CONFIG_GENERIC_GETTIMEOFDAY */
+
+enum vdso_clock_mode {
+ VDSO_CLOCKMODE_NONE,
+#ifdef CONFIG_GENERIC_GETTIMEOFDAY
+ VDSO_ARCH_CLOCKMODES,
+#endif
+ VDSO_CLOCKMODE_MAX,
+
+ /* Indicator for time namespace VDSO */
+ VDSO_CLOCKMODE_TIMENS = INT_MAX
+};
+
+#endif /* __VDSO_CLOCKSOURCE_H */