[PATCH v2 19/20] lib: vdso: Enable common headers

Vincenzo Frascino
2020-03-06T13:32:41Z

Refactor the unified vdso code to use the common headers.

Cc: Andy Lutomirski <luto@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
---
include/vdso/datapage.h | 32 +++++++++++++++++++++++++++++---
lib/vdso/gettimeofday.c | 21 ---------------------
2 files changed, 29 insertions(+), 24 deletions(-)

diff --git a/include/vdso/datapage.h b/include/vdso/datapage.h
index c5f347cc5e55..21842a73cbcf 100644
--- a/include/vdso/datapage.h
+++ b/include/vdso/datapage.h
@@ -4,9 +4,19 @@

#ifndef __ASSEMBLY__

-#include <linux/bits.h>
-#include <linux/time.h>
-#include <linux/types.h>
+#include <linux/compiler.h>
+#include <uapi/linux/time.h>
+#include <uapi/linux/types.h>
+#include <uapi/asm-generic/errno-base.h>
+
+#include <common/bits.h>
+#include <common/ktime.h>
+#include <common/limits.h>
+#include <common/math64.h>
+#include <common/processor.h>
+#include <common/time.h>
+#include <common/time32.h>
+#include <common/time64.h>

#define VDSO_BASES (CLOCK_TAI + 1)
#define VDSO_HRES (BIT(CLOCK_REALTIME) | \
@@ -101,6 +111,22 @@ struct vdso_data {
*/
extern struct vdso_data _vdso_data[CS_BASES] __attribute__((visibility("hidden")));

+/*
+ * The generic vDSO implementation requires that gettimeofday.h
+ * provides:
+ * - __arch_get_vdso_data(): to get the vdso datapage.
+ * - __arch_get_hw_counter(): to get the hw counter based on the
+ * clock_mode.
+ * - gettimeofday_fallback(): fallback for gettimeofday.
+ * - clock_gettime_fallback(): fallback for clock_gettime.
+ * - clock_getres_fallback(): fallback for clock_getres.
+ */
+#ifdef ENABLE_COMPAT_VDSO
+#include <asm/vdso/compat_gettimeofday.h>
+#else
+#include <asm/vdso/gettimeofday.h>
+#endif /* ENABLE_COMPAT_VDSO */
+
#endif /* !__ASSEMBLY__ */

#endif /* __VDSO_DATAPAGE_H */
diff --git a/lib/vdso/gettimeofday.c b/lib/vdso/gettimeofday.c
index f8b8ec5e63ac..e3244f74feea 100644
--- a/lib/vdso/gettimeofday.c
+++ b/lib/vdso/gettimeofday.c
@@ -2,30 +2,9 @@
/*
* Generic userspace implementations of gettimeofday() and similar.
*/
-#include <linux/compiler.h>
-#include <linux/math64.h>
-#include <linux/time.h>
-#include <linux/kernel.h>
-#include <linux/hrtimer_defs.h>
#include <vdso/datapage.h>
#include <vdso/helpers.h>

-/*
- * The generic vDSO implementation requires that gettimeofday.h
- * provides:
- * - __arch_get_vdso_data(): to get the vdso datapage.
- * - __arch_get_hw_counter(): to get the hw counter based on the
- * clock_mode.
- * - gettimeofday_fallback(): fallback for gettimeofday.
- * - clock_gettime_fallback(): fallback for clock_gettime.
- * - clock_getres_fallback(): fallback for clock_getres.
- */
-#ifdef ENABLE_COMPAT_VDSO
-#include <asm/vdso/compat_gettimeofday.h>
-#else
-#include <asm/vdso/gettimeofday.h>
-#endif /* ENABLE_COMPAT_VDSO */