[tip:tracing/core] tracing: use macros to denote usec and nsec per second

Li Zefan
2009-04-08T06:55:29Z

Commit-ID: a5dec5573f3c7e63f2f9b5852b9759ea342a5ff9
Gitweb: http://git.kernel.org/tip/a5dec5573f3c7e63f2f9b5852b9759ea342a5ff9
Author: Li Zefan <lizf@cn.fujitsu.com>
AuthorDate: Fri, 27 Mar 2009 14:55:44 +0800
Committer: Ingo Molnar <mingo@elte.hu>
CommitDate: Tue, 7 Apr 2009 14:43:06 +0200

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>

---
kernel/trace/trace_boot.c | 5 +++--
kernel/trace/trace_mmiotrace.c | 6 ++++--
2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/kernel/trace/trace_boot.c b/kernel/trace/trace_boot.c
index 7a30fc4..a29ef23 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",
diff --git a/kernel/trace/trace_mmiotrace.c b/kernel/trace/trace_mmiotrace.c
index 8e37fcd..d53b45e 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;