On 2019-12-09 12:49, David Hildenbrand wrote:
On 09.12.19 12:42, Thomas Huth wrote:
On 06/12/2019 17.26, Pierre Morel wrote:
To serve multiple times, the function get_clock_ms() is moved
from intercept.c test to the new file asm/time.h.
Signed-off-by: Pierre Morel <pmorel@xxxxxxxxxxxxx>
Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>
---
lib/s390x/asm/time.h | 27 +++++++++++++++++++++++++++
s390x/intercept.c | 11 +----------
2 files changed, 28 insertions(+), 10 deletions(-)
create mode 100644 lib/s390x/asm/time.h
diff --git a/lib/s390x/asm/time.h b/lib/s390x/asm/time.h
new file mode 100644
index 0000000..b07ccbd
--- /dev/null
+++ b/lib/s390x/asm/time.h
@@ -0,0 +1,27 @@
+/*
+ * Clock utilities for s390
+ *
+ * Authors:
+ * Thomas Huth <thuth@xxxxxxxxxx>
+ *
+ * Copied from the s390/intercept test by:
+ * Pierre Morel <pmorel@xxxxxxxxxxxxx>
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2.
+ */
+#ifndef _ASM_S390X_TIME_H_
+#define _ASM_S390X_TIME_H_
+
+static inline uint64_t get_clock_ms(void)
+{
+ uint64_t clk;
+
+ asm volatile(" stck %0 " : : "Q"(clk) : "memory");
+
+ /* Bit 51 is incrememented each microsecond */
+ return (clk >> (63 - 51)) / 1000;
+}
+
+
Please remove one of the two empty lines.
With that cosmetic nit fixed:
Reviewed-by: Thomas Huth <thuth@xxxxxxxxxx>
Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>
Thanks,
Pierre
--
Pierre Morel
IBM Lab Boeblingen
