tracing: use macros to denote usec and nsec per second

Impact: cleanup

Use USEC_PER_SEC and NSEC_PER_SEC instead of 1000000 and 1000000000.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
LKML-Reference: <49CC7870.9000309@cn.fujitsu.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

1 files changed, 4 insertions, 2 deletions

diff --git a/kernel/trace/trace_mmiotrace.c b/kernel/trace/trace_mmiotrace.c
index 8e37fcddd8b4..d53b45ed0806 100644
--- a/kernel/trace/trace_mmiotrace.c
+++ b/kernel/trace/trace_mmiotrace.c
@@ -9,6 +9,8 @@
 #include <linux/kernel.h>
 #include <linux/mmiotrace.h>
 #include <linux/pci.h>
+#include <linux/time.h>
+
 #include <asm/atomic.h>
 
 #include "trace.h"
@@ -174,7 +176,7 @@ static enum print_line_t mmio_print_rw(struct trace_iterator *iter)
         struct mmiotrace_rw *rw;
         struct trace_seq *s     = &iter->seq;
         unsigned long long t    = ns2usecs(iter->ts);
-        unsigned long usec_rem  = do_div(t, 1000000ULL);
+        unsigned long usec_rem  = do_div(t, USEC_PER_SEC);
         unsigned secs           = (unsigned long)t;
         int ret = 1;
 
@@ -221,7 +223,7 @@ static enum print_line_t mmio_print_map(struct trace_iterator *iter)
         struct mmiotrace_map *m;
         struct trace_seq *s     = &iter->seq;
         unsigned long long t    = ns2usecs(iter->ts);
-        unsigned long usec_rem  = do_div(t, 1000000ULL);
+        unsigned long usec_rem  = do_div(t, USEC_PER_SEC);
         unsigned secs           = (unsigned long)t;
         int ret;