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authorAlexander Gordeev <lasaine@lvk.cs.msu.su>2011-01-13 02:00:50 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2011-01-13 17:03:19 +0100
commit6f4229b51106cbc859e9d8209b22c8a2ec749e64 (patch)
tree346e08800b0f45330e99c9fae0255c73f1666835 /drivers/pps
parentpps: fix race in PPS_FETCH handler (diff)
downloadlinux-6f4229b51106cbc859e9d8209b22c8a2ec749e64.tar.xz
linux-6f4229b51106cbc859e9d8209b22c8a2ec749e64.zip
pps: unify timestamp gathering
Add a helper function to gather timestamps. This way clients don't have to duplicate it. Signed-off-by: Alexander Gordeev <lasaine@lvk.cs.msu.su> Acked-by: Rodolfo Giometti <giometti@linux.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/pps')
-rw-r--r--drivers/pps/clients/pps-ktimer.c9
-rw-r--r--drivers/pps/clients/pps-ldisc.c18
-rw-r--r--drivers/pps/kapi.c19
3 files changed, 20 insertions, 26 deletions
diff --git a/drivers/pps/clients/pps-ktimer.c b/drivers/pps/clients/pps-ktimer.c
index e7ef5b8186d0..e1bdd8bc8c9c 100644
--- a/drivers/pps/clients/pps-ktimer.c
+++ b/drivers/pps/clients/pps-ktimer.c
@@ -40,18 +40,13 @@ static struct timer_list ktimer;
static void pps_ktimer_event(unsigned long ptr)
{
- struct timespec __ts;
- struct pps_ktime ts;
+ struct pps_event_time ts;
/* First of all we get the time stamp... */
- getnstimeofday(&__ts);
+ pps_get_ts(&ts);
pr_info("PPS event at %lu\n", jiffies);
- /* ... and translate it to PPS time data struct */
- ts.sec = __ts.tv_sec;
- ts.nsec = __ts.tv_nsec;
-
pps_event(source, &ts, PPS_CAPTUREASSERT, NULL);
mod_timer(&ktimer, jiffies + HZ);
diff --git a/drivers/pps/clients/pps-ldisc.c b/drivers/pps/clients/pps-ldisc.c
index 8e1932d29fd4..20fc9f7645c8 100644
--- a/drivers/pps/clients/pps-ldisc.c
+++ b/drivers/pps/clients/pps-ldisc.c
@@ -27,26 +27,20 @@
#define PPS_TTY_MAGIC 0x0001
static void pps_tty_dcd_change(struct tty_struct *tty, unsigned int status,
- struct timespec *ts)
+ struct pps_event_time *ts)
{
int id = (long)tty->disc_data;
- struct timespec __ts;
- struct pps_ktime pps_ts;
+ struct pps_event_time __ts;
/* First of all we get the time stamp... */
- getnstimeofday(&__ts);
+ pps_get_ts(&__ts);
/* Does caller give us a timestamp? */
- if (ts) { /* Yes. Let's use it! */
- pps_ts.sec = ts->tv_sec;
- pps_ts.nsec = ts->tv_nsec;
- } else { /* No. Do it ourself! */
- pps_ts.sec = __ts.tv_sec;
- pps_ts.nsec = __ts.tv_nsec;
- }
+ if (!ts) /* No. Do it ourself! */
+ ts = &__ts;
/* Now do the PPS event report */
- pps_event(id, &pps_ts, status ? PPS_CAPTUREASSERT : PPS_CAPTURECLEAR,
+ pps_event(id, ts, status ? PPS_CAPTUREASSERT : PPS_CAPTURECLEAR,
NULL);
pr_debug("PPS %s at %lu on source #%d\n",
diff --git a/drivers/pps/kapi.c b/drivers/pps/kapi.c
index 3f89f5eba81c..b431d83b824a 100644
--- a/drivers/pps/kapi.c
+++ b/drivers/pps/kapi.c
@@ -268,11 +268,12 @@ EXPORT_SYMBOL(pps_unregister_source);
* pps->info.echo(source, event, data);
*/
-void pps_event(int source, struct pps_ktime *ts, int event, void *data)
+void pps_event(int source, struct pps_event_time *ts, int event, void *data)
{
struct pps_device *pps;
unsigned long flags;
int captured = 0;
+ struct pps_ktime ts_real;
if ((event & (PPS_CAPTUREASSERT | PPS_CAPTURECLEAR)) == 0) {
printk(KERN_ERR "pps: unknown event (%x) for source %d\n",
@@ -284,8 +285,10 @@ void pps_event(int source, struct pps_ktime *ts, int event, void *data)
if (!pps)
return;
- pr_debug("PPS event on source %d at %llu.%06u\n",
- pps->id, (unsigned long long) ts->sec, ts->nsec);
+ pr_debug("PPS event on source %d at %ld.%09ld\n",
+ pps->id, ts->ts_real.tv_sec, ts->ts_real.tv_nsec);
+
+ timespec_to_pps_ktime(&ts_real, ts->ts_real);
spin_lock_irqsave(&pps->lock, flags);
@@ -299,10 +302,11 @@ void pps_event(int source, struct pps_ktime *ts, int event, void *data)
(pps->params.mode & PPS_CAPTUREASSERT)) {
/* We have to add an offset? */
if (pps->params.mode & PPS_OFFSETASSERT)
- pps_add_offset(ts, &pps->params.assert_off_tu);
+ pps_add_offset(&ts_real,
+ &pps->params.assert_off_tu);
/* Save the time stamp */
- pps->assert_tu = *ts;
+ pps->assert_tu = ts_real;
pps->assert_sequence++;
pr_debug("capture assert seq #%u for source %d\n",
pps->assert_sequence, source);
@@ -313,10 +317,11 @@ void pps_event(int source, struct pps_ktime *ts, int event, void *data)
(pps->params.mode & PPS_CAPTURECLEAR)) {
/* We have to add an offset? */
if (pps->params.mode & PPS_OFFSETCLEAR)
- pps_add_offset(ts, &pps->params.clear_off_tu);
+ pps_add_offset(&ts_real,
+ &pps->params.clear_off_tu);
/* Save the time stamp */
- pps->clear_tu = *ts;
+ pps->clear_tu = ts_real;
pps->clear_sequence++;
pr_debug("capture clear seq #%u for source %d\n",
pps->clear_sequence, source);