[LTP] [PATCH v2] Remove ftime and sys/timeb.h

[Yang Xu]

The two case uses ftime to get the current milliseconds and it was
used to generate random value. Using gettimeofday() to get the microseconds
can reach the same aim.

This also fixes the travis build error[1] on Fedora:Rawhide because the <sys/timeb.h>
has been deprecated[2].

[1] https://travis-ci.org/github/linux-test-project/ltp/jobs/737698948
[2] https://www.spinics.net/lists/fedora-devel/msg279545.html

Reviewed-by: Li Wang <liwang@redhat.com>
Acked-by: Jan Stancek <jstancek@redhat.com>
Acked-by: Xiao Yang <yangx.jy@cn.fujitsu.com>
Signed-off-by: Yang Xu <xuyang2018.jy@cn.fujitsu.com>
---
v1->v2
1.Remove useless "% 1000000" since the range of tv_usec is 0~999999.
2.case suseconds_t to unsigned int 
 testcases/kernel/mem/hugetlb/lib/hugetlb.c | 12 ++++++------
 testcases/kernel/sched/tool/trace_sched.c  |  8 ++++----
 2 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/testcases/kernel/mem/hugetlb/lib/hugetlb.c b/testcases/kernel/mem/hugetlb/lib/hugetlb.c
index 4bb2d500e..1204f21d2 100644
--- a/testcases/kernel/mem/hugetlb/lib/hugetlb.c
+++ b/testcases/kernel/mem/hugetlb/lib/hugetlb.c
@@ -35,7 +35,7 @@
 #include <sys/types.h>
 #include <sys/ipc.h>
 #include <sys/shm.h>
-#include <sys/timeb.h>
+#include <sys/time.h>
 #include <pwd.h>
 #include "hugetlb.h"
 
@@ -52,7 +52,7 @@ int getipckey(void)
 	char *curdir = NULL;
 	size_t size = 0;
 	key_t ipc_key;
-	struct timeb time_info;
+	struct timeval time_info;
 
 	curdir = getcwd(curdir, size);
 	if (curdir == NULL)
@@ -67,11 +67,11 @@ int getipckey(void)
 	 * project identifier is a "random character" produced by
 	 * generating a random number between 0 and 25 and then adding
 	 * that to the ascii value of 'a'.  The "seed" for the random
-	 * number is the millisecond value that is set in the timeb
-	 * structure after calling ftime().
+	 * number is the microseconds value that is set in the timeval
+	 * structure after calling gettimeofday().
 	 */
-	ftime(&time_info);
-	srandom((unsigned int)time_info.millitm);
+	gettimeofday(&time_info, NULL);
+	srandom((unsigned int)time_info.tv_usec);
 
 	ipc_key = ftok(curdir, ascii_a + random() % 26);
 	if (ipc_key == -1)
diff --git a/testcases/kernel/sched/tool/trace_sched.c b/testcases/kernel/sched/tool/trace_sched.c
index 71caf239a..85c4b23ad 100644
--- a/testcases/kernel/sched/tool/trace_sched.c
+++ b/testcases/kernel/sched/tool/trace_sched.c
@@ -52,7 +52,7 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <sys/wait.h>
-#include <sys/timeb.h>
+#include <sys/time.h>
 #include <unistd.h>
 #include <string.h>
 
@@ -199,7 +199,7 @@ void *thread_func(void *args)
 	static int sched_policy;	/* scheduling policy as set by user/default   */
 	struct sched_param ssp;	/* set schedule priority.                     */
 	struct sched_param gsp;	/* gsp schedule priority.                     */
-	struct timeb tptr;	/* tptr.millitm will be used to seed srand.   */
+	struct timeval tptr;	/* tptr.tv_usec will be used to seed srand.   */
 	thread_sched_t *locargptr =	/* local ptr to the arguments.                */
 	    (thread_sched_t *) args;
 
@@ -215,8 +215,8 @@ void *thread_func(void *args)
 		ssp.sched_priority = 0;
 	else {
 		/* Set a random value between max_priority and min_priority */
-		ftime(&tptr);
-		srand((tptr.millitm) % 1000);
+		gettimeofday(&tptr, NULL);
+		srand((unsigned int)tptr.tv_usec);
 		set_priority = (min_priority + (int)((float)max_priority
 						     * rand() / (RAND_MAX +
 								 1.0)));
-- 
2.23.0