v4.19.13 snapshot.
diff --git a/arch/sparc/kernel/vdso.c b/arch/sparc/kernel/vdso.c
new file mode 100644
index 0000000..5888066
--- /dev/null
+++ b/arch/sparc/kernel/vdso.c
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2001 Andrea Arcangeli <andrea@suse.de> SuSE
+ * Copyright 2003 Andi Kleen, SuSE Labs.
+ *
+ * Thanks to hpa@transmeta.com for some useful hint.
+ * Special thanks to Ingo Molnar for his early experience with
+ * a different vsyscall implementation for Linux/IA32 and for the name.
+ */
+
+#include <linux/seqlock.h>
+#include <linux/time.h>
+#include <linux/timekeeper_internal.h>
+
+#include <asm/vvar.h>
+
+void update_vsyscall_tz(void)
+{
+ if (unlikely(vvar_data == NULL))
+ return;
+
+ vvar_data->tz_minuteswest = sys_tz.tz_minuteswest;
+ vvar_data->tz_dsttime = sys_tz.tz_dsttime;
+}
+
+void update_vsyscall(struct timekeeper *tk)
+{
+ struct vvar_data *vdata = vvar_data;
+
+ if (unlikely(vdata == NULL))
+ return;
+
+ vvar_write_begin(vdata);
+ vdata->vclock_mode = tk->tkr_mono.clock->archdata.vclock_mode;
+ vdata->clock.cycle_last = tk->tkr_mono.cycle_last;
+ vdata->clock.mask = tk->tkr_mono.mask;
+ vdata->clock.mult = tk->tkr_mono.mult;
+ vdata->clock.shift = tk->tkr_mono.shift;
+
+ vdata->wall_time_sec = tk->xtime_sec;
+ vdata->wall_time_snsec = tk->tkr_mono.xtime_nsec;
+
+ vdata->monotonic_time_sec = tk->xtime_sec +
+ tk->wall_to_monotonic.tv_sec;
+ vdata->monotonic_time_snsec = tk->tkr_mono.xtime_nsec +
+ (tk->wall_to_monotonic.tv_nsec <<
+ tk->tkr_mono.shift);
+
+ while (vdata->monotonic_time_snsec >=
+ (((u64)NSEC_PER_SEC) << tk->tkr_mono.shift)) {
+ vdata->monotonic_time_snsec -=
+ ((u64)NSEC_PER_SEC) << tk->tkr_mono.shift;
+ vdata->monotonic_time_sec++;
+ }
+
+ vdata->wall_time_coarse_sec = tk->xtime_sec;
+ vdata->wall_time_coarse_nsec =
+ (long)(tk->tkr_mono.xtime_nsec >> tk->tkr_mono.shift);
+
+ vdata->monotonic_time_coarse_sec =
+ vdata->wall_time_coarse_sec + tk->wall_to_monotonic.tv_sec;
+ vdata->monotonic_time_coarse_nsec =
+ vdata->wall_time_coarse_nsec + tk->wall_to_monotonic.tv_nsec;
+
+ while (vdata->monotonic_time_coarse_nsec >= NSEC_PER_SEC) {
+ vdata->monotonic_time_coarse_nsec -= NSEC_PER_SEC;
+ vdata->monotonic_time_coarse_sec++;
+ }
+
+ vvar_write_end(vdata);
+}