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-rw-r--r--fs/lockd/mon.c4
-rw-r--r--fs/proc/array.c7
-rw-r--r--fs/timerfd.c77
3 files changed, 75 insertions, 13 deletions
diff --git a/fs/lockd/mon.c b/fs/lockd/mon.c
index 1812f026960c..daa8e7514eae 100644
--- a/fs/lockd/mon.c
+++ b/fs/lockd/mon.c
@@ -306,11 +306,9 @@ static struct nsm_handle *nsm_lookup_priv(const struct nsm_private *priv)
static void nsm_init_private(struct nsm_handle *nsm)
{
u64 *p = (u64 *)&nsm->sm_priv.data;
- struct timespec ts;
s64 ns;
- ktime_get_ts(&ts);
- ns = timespec_to_ns(&ts);
+ ns = ktime_get_ns();
put_unaligned(ns, p);
put_unaligned((unsigned long)nsm, p + 1);
}
diff --git a/fs/proc/array.c b/fs/proc/array.c
index 64db2bceac59..d7f9199217bb 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -473,13 +473,8 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
priority = task_prio(task);
nice = task_nice(task);
- /* Temporary variable needed for gcc-2.96 */
- /* convert timespec -> nsec*/
- start_time =
- (unsigned long long)task->real_start_time.tv_sec * NSEC_PER_SEC
- + task->real_start_time.tv_nsec;
/* convert nsec -> ticks */
- start_time = nsec_to_clock_t(start_time);
+ start_time = nsec_to_clock_t(task->real_start_time);
seq_printf(m, "%d (%s) %c", pid_nr_ns(pid, ns), tcomm, state);
seq_put_decimal_ll(m, ' ', ppid);
diff --git a/fs/timerfd.c b/fs/timerfd.c
index 0013142c0475..80c350216ea8 100644
--- a/fs/timerfd.c
+++ b/fs/timerfd.c
@@ -35,8 +35,9 @@ struct timerfd_ctx {
ktime_t moffs;
wait_queue_head_t wqh;
u64 ticks;
- int expired;
int clockid;
+ short unsigned expired;
+ short unsigned settime_flags; /* to show in fdinfo */
struct rcu_head rcu;
struct list_head clist;
bool might_cancel;
@@ -92,7 +93,7 @@ static enum alarmtimer_restart timerfd_alarmproc(struct alarm *alarm,
*/
void timerfd_clock_was_set(void)
{
- ktime_t moffs = ktime_get_monotonic_offset();
+ ktime_t moffs = ktime_mono_to_real((ktime_t){ .tv64 = 0 });
struct timerfd_ctx *ctx;
unsigned long flags;
@@ -125,7 +126,7 @@ static bool timerfd_canceled(struct timerfd_ctx *ctx)
{
if (!ctx->might_cancel || ctx->moffs.tv64 != KTIME_MAX)
return false;
- ctx->moffs = ktime_get_monotonic_offset();
+ ctx->moffs = ktime_mono_to_real((ktime_t){ .tv64 = 0 });
return true;
}
@@ -196,6 +197,8 @@ static int timerfd_setup(struct timerfd_ctx *ctx, int flags,
if (timerfd_canceled(ctx))
return -ECANCELED;
}
+
+ ctx->settime_flags = flags & TFD_SETTIME_FLAGS;
return 0;
}
@@ -284,11 +287,77 @@ static ssize_t timerfd_read(struct file *file, char __user *buf, size_t count,
return res;
}
+#ifdef CONFIG_PROC_FS
+static int timerfd_show(struct seq_file *m, struct file *file)
+{
+ struct timerfd_ctx *ctx = file->private_data;
+ struct itimerspec t;
+
+ spin_lock_irq(&ctx->wqh.lock);
+ t.it_value = ktime_to_timespec(timerfd_get_remaining(ctx));
+ t.it_interval = ktime_to_timespec(ctx->tintv);
+ spin_unlock_irq(&ctx->wqh.lock);
+
+ return seq_printf(m,
+ "clockid: %d\n"
+ "ticks: %llu\n"
+ "settime flags: 0%o\n"
+ "it_value: (%llu, %llu)\n"
+ "it_interval: (%llu, %llu)\n",
+ ctx->clockid, (unsigned long long)ctx->ticks,
+ ctx->settime_flags,
+ (unsigned long long)t.it_value.tv_sec,
+ (unsigned long long)t.it_value.tv_nsec,
+ (unsigned long long)t.it_interval.tv_sec,
+ (unsigned long long)t.it_interval.tv_nsec);
+}
+#else
+#define timerfd_show NULL
+#endif
+
+#ifdef CONFIG_CHECKPOINT_RESTORE
+static long timerfd_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+ struct timerfd_ctx *ctx = file->private_data;
+ int ret = 0;
+
+ switch (cmd) {
+ case TFD_IOC_SET_TICKS: {
+ u64 ticks;
+
+ if (copy_from_user(&ticks, (u64 __user *)arg, sizeof(ticks)))
+ return -EFAULT;
+ if (!ticks)
+ return -EINVAL;
+
+ spin_lock_irq(&ctx->wqh.lock);
+ if (!timerfd_canceled(ctx)) {
+ ctx->ticks = ticks;
+ if (ticks)
+ wake_up_locked(&ctx->wqh);
+ } else
+ ret = -ECANCELED;
+ spin_unlock_irq(&ctx->wqh.lock);
+ break;
+ }
+ default:
+ ret = -ENOTTY;
+ break;
+ }
+
+ return ret;
+}
+#else
+#define timerfd_ioctl NULL
+#endif
+
static const struct file_operations timerfd_fops = {
.release = timerfd_release,
.poll = timerfd_poll,
.read = timerfd_read,
.llseek = noop_llseek,
+ .show_fdinfo = timerfd_show,
+ .unlocked_ioctl = timerfd_ioctl,
};
static int timerfd_fget(int fd, struct fd *p)
@@ -336,7 +405,7 @@ SYSCALL_DEFINE2(timerfd_create, int, clockid, int, flags)
else
hrtimer_init(&ctx->t.tmr, clockid, HRTIMER_MODE_ABS);
- ctx->moffs = ktime_get_monotonic_offset();
+ ctx->moffs = ktime_mono_to_real((ktime_t){ .tv64 = 0 });
ufd = anon_inode_getfd("[timerfd]", &timerfd_fops, ctx,
O_RDWR | (flags & TFD_SHARED_FCNTL_FLAGS));