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, 3 insertions, 2 deletions

diff --git a/kernel/trace/trace_boot.c b/kernel/trace/trace_boot.c
index 7a30fc4c3642..a29ef23ffb47 100644
--- a/kernel/trace/trace_boot.c
+++ b/kernel/trace/trace_boot.c
@@ -9,6 +9,7 @@
 #include <linux/debugfs.h>
 #include <linux/ftrace.h>
 #include <linux/kallsyms.h>
+#include <linux/time.h>
 
 #include "trace.h"
 #include "trace_output.h"
@@ -67,7 +68,7 @@ initcall_call_print_line(struct trace_iterator *iter)
         trace_assign_type(field, entry);
         call = &field->boot_call;
         ts = iter->ts;
-        nsec_rem = do_div(ts, 1000000000);
+        nsec_rem = do_div(ts, NSEC_PER_SEC);
 
         ret = trace_seq_printf(s, "[%5ld.%09ld] calling  %s @ %i\n",
                         (unsigned long)ts, nsec_rem, call->func, call->caller);
@@ -92,7 +93,7 @@ initcall_ret_print_line(struct trace_iterator *iter)
         trace_assign_type(field, entry);
         init_ret = &field->boot_ret;
         ts = iter->ts;
-        nsec_rem = do_div(ts, 1000000000);
+        nsec_rem = do_div(ts, NSEC_PER_SEC);
 
         ret = trace_seq_printf(s, "[%5ld.%09ld] initcall %s "
                         "returned %d after %llu msecs\n",