[PATCH 19/37] staging/lustre: use 64-bit time for procfs output

[Arnd Bergmann]

This time is only printed in procfs, and can be easily converted
to 64-bit to avoid overflowing on 32-bit systems in 2038.

Signed-off-by: Arnd Bergmann <arnd at arndb.de>
---
 drivers/staging/lustre/lustre/include/lustre_import.h |  4 ++--
 .../staging/lustre/lustre/obdclass/lprocfs_status.c   | 19 +++++++++----------
 drivers/staging/lustre/lustre/ptlrpc/events.c         |  2 +-
 drivers/staging/lustre/lustre/ptlrpc/import.c         |  2 +-
 4 files changed, 13 insertions(+), 14 deletions(-)

diff --git a/drivers/staging/lustre/lustre/include/lustre_import.h b/drivers/staging/lustre/lustre/include/lustre_import.h
index c8b89a359518..99606387f904 100644
--- a/drivers/staging/lustre/lustre/include/lustre_import.h
+++ b/drivers/staging/lustre/lustre/include/lustre_import.h
@@ -148,7 +148,7 @@ struct obd_import_conn {
 #define IMP_STATE_HIST_LEN 16
 struct import_state_hist {
 	enum lustre_imp_state ish_state;
-	time_t		ish_time;
+	time64_t	ish_time;
 };
 
 /**
@@ -307,7 +307,7 @@ struct obd_import {
 	__u32		     imp_msghdr_flags;       /* adjusted based on server capability */
 
 	struct imp_at	     imp_at;		 /* adaptive timeout data */
-	time_t		    imp_last_reply_time;    /* for health check */
+	time64_t	     imp_last_reply_time;    /* for health check */
 };
 
 typedef void (*obd_import_callback)(struct obd_import *imp, void *closure,
diff --git a/drivers/staging/lustre/lustre/obdclass/lprocfs_status.c b/drivers/staging/lustre/lustre/obdclass/lprocfs_status.c
index 8d2a523ea7cf..9887ce1d51e4 100644
--- a/drivers/staging/lustre/lustre/obdclass/lprocfs_status.c
+++ b/drivers/staging/lustre/lustre/obdclass/lprocfs_status.c
@@ -846,8 +846,7 @@ int lprocfs_rd_state(struct seq_file *m, void *data)
 			&imp->imp_state_hist[(k + j) % IMP_STATE_HIST_LEN];
 		if (ish->ish_state == 0)
 			continue;
-		seq_printf(m, " - ["CFS_TIME_T", %s]\n",
-			      ish->ish_time,
+		seq_printf(m, " - [%lld, %s]\n", (s64)ish->ish_time,
 			      ptlrpc_import_state_name(ish->ish_state));
 	}
 
@@ -872,7 +871,7 @@ int lprocfs_rd_timeouts(struct seq_file *m, void *data)
 	struct obd_device *obd = (struct obd_device *)data;
 	struct obd_import *imp;
 	unsigned int cur, worst;
-	time_t now, worstt;
+	time64_t now, worstt;
 	struct dhms ts;
 	int i;
 
@@ -880,12 +879,12 @@ int lprocfs_rd_timeouts(struct seq_file *m, void *data)
 	LPROCFS_CLIMP_CHECK(obd);
 	imp = obd->u.cli.cl_import;
 
-	now = get_seconds();
+	now = ktime_get_real_seconds();
 
 	/* Some network health info for kicks */
 	s2dhms(&ts, now - imp->imp_last_reply_time);
-	seq_printf(m, "%-10s : %ld, "DHMS_FMT" ago\n",
-		       "last reply", imp->imp_last_reply_time, DHMS_VARS(&ts));
+	seq_printf(m, "%-10s : %lld, "DHMS_FMT" ago\n",
+		       "last reply", (s64)imp->imp_last_reply_time, DHMS_VARS(&ts));
 
 	cur = at_get(&imp->imp_at.iat_net_latency);
 	worst = imp->imp_at.iat_net_latency.at_worst_ever;
@@ -1190,11 +1189,11 @@ static int lprocfs_stats_seq_show(struct seq_file *p, void *v)
 	int                              idx    = *(loff_t *)v;
 
 	if (idx == 0) {
-		struct timeval now;
-		do_gettimeofday(&now);
-		seq_printf(p, "%-25s %lu.%lu secs.usecs\n",
+		struct timespec64 now;
+		ktime_get_real_ts64(&now);
+		seq_printf(p, "%-25s %llu.%9lu secs.usecs\n",
 			   "snapshot_time",
-			   now.tv_sec, (unsigned long)now.tv_usec);
+			   (s64)now.tv_sec, (unsigned long)now.tv_nsec);
 	}
 
 	hdr = &stats->ls_cnt_header[idx];
diff --git a/drivers/staging/lustre/lustre/ptlrpc/events.c b/drivers/staging/lustre/lustre/ptlrpc/events.c
index c8ef9e578263..53f6b6278403 100644
--- a/drivers/staging/lustre/lustre/ptlrpc/events.c
+++ b/drivers/staging/lustre/lustre/ptlrpc/events.c
@@ -158,7 +158,7 @@ void reply_in_callback(lnet_event_t *ev)
 			  ev->mlength, ev->offset, req->rq_replen);
 	}
 
-	req->rq_import->imp_last_reply_time = get_seconds();
+	req->rq_import->imp_last_reply_time = ktime_get_real_seconds();
 
 out_wake:
 	/* NB don't unlock till after wakeup; req can disappear under us
diff --git a/drivers/staging/lustre/lustre/ptlrpc/import.c b/drivers/staging/lustre/lustre/ptlrpc/import.c
index c52ceef989d5..b6f38cbbc295 100644
--- a/drivers/staging/lustre/lustre/ptlrpc/import.c
+++ b/drivers/staging/lustre/lustre/ptlrpc/import.c
@@ -79,7 +79,7 @@ static void __import_set_state(struct obd_import *imp,
 	imp->imp_state = state;
 	imp->imp_state_hist[imp->imp_state_hist_idx].ish_state = state;
 	imp->imp_state_hist[imp->imp_state_hist_idx].ish_time =
-		get_seconds();
+		ktime_get_real_seconds();
 	imp->imp_state_hist_idx = (imp->imp_state_hist_idx + 1) %
 		IMP_STATE_HIST_LEN;
 }
-- 
2.1.0.rc2