[CRIU] [PATCH 03/10] Revert "stats: save uptime to know when dump had happened"

[Pavel Tikhomirov]

Leave dump_uptime in stats file for backward and forward compatibility
though it is unused now.

This reverts commit fbba4d249a49e34e41c7c63ed77fab1bee3a13de.

Signed-off-by: Pavel Tikhomirov <ptikhomirov at virtuozzo.com>
---
 criu/cr-dump.c       |  4 ----
 criu/include/stats.h |  2 --
 criu/proc_parse.c    |  2 +-
 criu/stats.c         | 22 ----------------------
 4 files changed, 1 insertion(+), 29 deletions(-)

diff --git a/criu/cr-dump.c b/criu/cr-dump.c
index 9e8425504..0f4f438b3 100644
--- a/criu/cr-dump.c
+++ b/criu/cr-dump.c
@@ -1571,8 +1571,6 @@ static int cr_pre_dump_finish(int ret)
 	 */
 	if (arch_set_thread_regs(root_item, false) < 0)
 		goto err;
-	if (timing_uptime(TIME_DUMP_UPTIME))
-		goto err;
 	pstree_switch_state(root_item, TASK_ALIVE);
 
 	timing_stop(TIME_FROZEN);
@@ -1800,8 +1798,6 @@ static int cr_dump_finish(int ret)
 
 	if (arch_set_thread_regs(root_item, true) < 0)
 		return -1;
-	if (timing_uptime(TIME_DUMP_UPTIME))
-		return -1;
 	pstree_switch_state(root_item,
 			    (ret || post_dump_ret) ?
 			    TASK_ALIVE : opts.final_state);
diff --git a/criu/include/stats.h b/criu/include/stats.h
index 81775c856..07690b8ea 100644
--- a/criu/include/stats.h
+++ b/criu/include/stats.h
@@ -7,7 +7,6 @@ enum {
 	TIME_MEMDUMP,
 	TIME_MEMWRITE,
 	TIME_IRMAP_RESOLVE,
-	TIME_DUMP_UPTIME,
 
 	DUMP_TIME_NR_STATS,
 };
@@ -21,7 +20,6 @@ enum {
 
 extern void timing_start(int t);
 extern void timing_stop(int t);
-extern int timing_uptime(int t);
 
 enum {
 	CNT_PAGES_SCANNED,
diff --git a/criu/proc_parse.c b/criu/proc_parse.c
index 54f0ffd8e..5aabed1eb 100644
--- a/criu/proc_parse.c
+++ b/criu/proc_parse.c
@@ -2713,7 +2713,7 @@ int parse_children(pid_t pid, pid_t **_c, int *_n)
 	return -1;
 }
 
-int parse_uptime(struct timeval *_tv)
+__maybe_unused int parse_uptime(struct timeval *_tv)
 {
 	unsigned long sec, csec;
 	FILE *f;
diff --git a/criu/stats.c b/criu/stats.c
index 2944474cd..64679b134 100644
--- a/criu/stats.c
+++ b/criu/stats.c
@@ -9,8 +9,6 @@
 #include "stats.h"
 #include "util.h"
 #include "image.h"
-#include "pid.h"
-#include "proc_parse.h"
 #include "images/stats.pb-c.h"
 
 struct timing {
@@ -97,14 +95,6 @@ void timing_stop(int t)
 	timeval_accumulate(&tm->start, &now, &tm->total);
 }
 
-int timing_uptime(int t)
-{
-	struct timing *tm;
-
-	tm = get_timing(t);
-	return parse_uptime(&tm->total);
-}
-
 static void encode_time(int t, u_int32_t *to)
 {
 	struct timing *tm;
@@ -113,14 +103,6 @@ static void encode_time(int t, u_int32_t *to)
 	*to = tm->total.tv_sec * USEC_PER_SEC + tm->total.tv_usec;
 }
 
-static void encode_time_64(int t, u_int64_t *to)
-{
-	struct timing *tm;
-
-	tm = get_timing(t);
-	*to = tm->total.tv_sec * USEC_PER_SEC + tm->total.tv_usec;
-}
-
 static void display_stats(int what, StatsEntry *stats)
 {
 	if (what == DUMP_STATS) {
@@ -131,8 +113,6 @@ static void display_stats(int what, StatsEntry *stats)
 		pr_msg("Memory write time: %d us\n", stats->dump->memwrite_time);
 		if (stats->dump->has_irmap_resolve)
 			pr_msg("IRMAP resolve time: %d us\n", stats->dump->irmap_resolve);
-		if (stats->dump->has_dump_uptime)
-			pr_msg("Memory dump time-stamp: %" PRIu64 " us\n", stats->dump->dump_uptime);
 		pr_msg("Memory pages scanned: %" PRIu64 " (0x%" PRIx64 ")\n", stats->dump->pages_scanned,
 				stats->dump->pages_scanned);
 		pr_msg("Memory pages skipped from parent: %" PRIu64 " (0x%" PRIx64 ")\n",
@@ -175,8 +155,6 @@ void write_stats(int what)
 		encode_time(TIME_MEMWRITE, &ds_entry.memwrite_time);
 		ds_entry.has_irmap_resolve = true;
 		encode_time(TIME_IRMAP_RESOLVE, &ds_entry.irmap_resolve);
-		ds_entry.has_dump_uptime = true;
-		encode_time_64(TIME_DUMP_UPTIME, &ds_entry.dump_uptime);
 
 		ds_entry.pages_scanned = dstats->counts[CNT_PAGES_SCANNED];
 		ds_entry.pages_skipped_parent = dstats->counts[CNT_PAGES_SKIPPED_PARENT];
-- 
2.14.3