[LTP] [PATCH 2/2] sched_setparam/10-1: remove testcase

[Jan S. <jst...@re...>]

As in 9-1, this hangs on -rt kernel, because alarm(2)
never fires.

In case it runs on single cpu system, it's pretty
much same as 9-1: child process of higher priority
preempts parent.

In case it runs on 2+ CPUs, it doesn't matter that
one child is able to preempt parent, shared value
is going to be increased regardless in all other
children.

Signed-off-by: Jan Stancek <jst...@re...>
---
 .../conformance/interfaces/sched_setparam/10-1.c   | 180 ---------------------
 1 file changed, 180 deletions(-)
 delete mode 100644 testcases/open_posix_testsuite/conformance/interfaces/sched_setparam/10-1.c

diff --git a/testcases/open_posix_testsuite/conformance/interfaces/sched_setparam/10-1.c b/testcases/open_posix_testsuite/conformance/interfaces/sched_setparam/10-1.c
deleted file mode 100644
index 15dfe41..0000000
--- a/testcases/open_posix_testsuite/conformance/interfaces/sched_setparam/10-1.c
+++ /dev/null
@@ -1,180 +0,0 @@
-/*
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License version 2.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *
- * Test that the process that is the head of the highest priority list preempt
- * the process calling sched_setparam() when the calling process sets its own
- * priority lower than that of one or more other non-empty process lists.
- *
- * There is no portable way to get the number of CPUs but the test should work
- * for most of UNIX system (including but not limited to: Linux, Solaris, AIX,
- * HPUX, *BSD).
- * This test used shared memory.
- * Steps:
- *   1. Create a share memory segment.
- *   2. Change the policy to SCHED_FIFO.
- *   3. Create nb_cpu children processes which shall have the same priority
- *      and policy than the father (cf specs of fork).
- *   4. Call sched_setparam with a priority smaller than those of children.
- *   5. Check if the shared value has been changed by a child process. If not,
- *      the test fail.
- */
-
-#include <sched.h>
-#include <stdio.h>
-#include <signal.h>
-#include <sys/ipc.h>
-#include <sys/shm.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <errno.h>
-#include "posixtest.h"
-
-#ifdef BSD
-#include <sys/types.h>
-#include <sys/param.h>
-#include <sys/sysctl.h>
-#endif
-
-#ifdef HPUX
-#include <sys/param.h>
-#include <sys/pstat.h>
-#endif
-
-static int nb_cpu;
-static int *shmptr;
-
-static int get_ncpu(void)
-{
-	int ncpu = -1;
-
-	/* This syscall is not POSIX but it should work on many system */
-#ifdef _SC_NPROCESSORS_ONLN
-	ncpu = sysconf(_SC_NPROCESSORS_ONLN);
-#else
-#ifdef BSD
-	int mib[2];
-	size_t len = sizeof(ncpu);
-	mib[0] = CTL_HW;
-	mib[1] = HW_NCPU;
-	sysctl(mib, 2, &ncpu, &len, NULL, 0);
-#else
-#ifdef HPUX
-	struct pst_dynamic psd;
-	pstat_getdynamic(&psd, sizeof(psd), 1, 0);
-	ncpu = (int)psd.psd_proc_cnt;
-#endif /* HPUX */
-#endif /* BSD */
-#endif /* _SC_NPROCESSORS_ONLN */
-
-	return ncpu;
-}
-
-static void child_process(void)
-{
-	alarm(2);
-
-	while (1) {
-		(*shmptr)++;
-		sched_yield();
-	}
-}
-
-static void kill_children(int *child_pid)
-{
-	int i;
-
-	for (i = 0; i < nb_cpu; i++) {
-		kill(child_pid[i], SIGTERM);
-	}
-}
-
-int main(void)
-{
-	int *child_pid, oldcount, newcount, shm_id, i, j;
-	struct sched_param param;
-	key_t key;
-
-	nb_cpu = get_ncpu();
-
-	if (nb_cpu == -1) {
-		printf("Can not get the number of CPUs of your machines.\n");
-		return PTS_UNRESOLVED;
-	}
-
-	child_pid = malloc(nb_cpu * sizeof(int));
-
-	key = ftok("conformance/interfaces/sched_setparam/10-1.c", 1234);
-	shm_id = shmget(key, sizeof(int), IPC_CREAT | 0600);
-	if (shm_id < 0) {
-		perror("An error occurs when calling shmget()");
-		return PTS_UNRESOLVED;
-	}
-
-	shmptr = shmat(shm_id, 0, 0);
-	if (shmptr == (void *)-1) {
-		perror("An error occurs when calling shmat()");
-		return PTS_UNRESOLVED;
-	}
-	*shmptr = 0;
-
-	param.sched_priority = sched_get_priority_max(SCHED_FIFO);
-
-	if (sched_setscheduler(getpid(), SCHED_FIFO, &param) != 0) {
-		if (errno == EPERM) {
-			printf
-			    ("This process does not have the permission to set its own scheduling "
-			     "parameter.\nTry to launch this test as root\n");
-		} else {
-			perror
-			    ("An error occurs when calling sched_setscheduler()");
-		}
-		return PTS_UNRESOLVED;
-	}
-
-	for (i = 0; i < nb_cpu; i++) {
-		child_pid[i] = fork();
-		if (child_pid[i] == -1) {
-			perror("An error occurs when calling fork()");
-			for (j = 0; j < i; j++) {
-				kill(child_pid[j], SIGTERM);
-			}
-			return PTS_UNRESOLVED;
-		} else if (child_pid[i] == 0) {
-
-			child_process();
-
-			printf("This code should not be executed.\n");
-			return PTS_UNRESOLVED;
-		}
-	}
-
-	sleep(1);
-
-	param.sched_priority--;
-
-	oldcount = *shmptr;
-	if (sched_setparam(getpid(), &param) != 0) {
-		perror("An error occurs when calling sched_setparam()");
-		kill_children(child_pid);
-		return PTS_UNRESOLVED;
-	}
-	newcount = *shmptr;
-
-	if (newcount == oldcount) {
-		printf
-		    ("The calling process does not relinquish the processor\n");
-		kill_children(child_pid);
-		return PTS_FAIL;
-	}
-
-	printf("Test PASSED\n");
-	kill_children(child_pid);
-	return PTS_PASS;
-}
-- 
1.8.3.1