[LTP] [PATCH] Disable Broken Test Cases

[CAI Q. <ca...@cc...>]

Hi,

This patch temporarily disables broken test cases,

nanosleep01
nanosleep02
pselect01
pselect01_64

because the ways to calculate the syscall execution time looks like
invalid. For example, in pselect01 test case,

  start = time(&t);
   retval = pselect(0, &readfds, NULL, NULL, (struct timespec *)&tv,NULL);
  end = time(&t);

  /* Changed total_sec compare to an at least vs an exact compare */

  if(((end - start) >= total_sec) && ((end - start) <= total_sec + 1))
  tst_resm(TPASS,"Sleep time was correct");
  else
  tst_resm(TFAIL,"Sleep time was incorrect:%d != %d",total_sec,(end - start));
 }

The CPU scheduler can suspend the execution of the program just after
time(), but before pselect(). As the result, (end - start) is not the
actual syscall execution time, which introduces a false test failure
here. The same problem exists in nanosleep01 and nanosleep02 as well,

   /* Note down the current time */
      gettimeofday(&otime, 0);
   /*
    * Call nanosleep() to suspend child process
    * for specified time.
    */
   TEST(nanosleep(&timereq, NULL));

   /* time after child resumes execution */
      gettimeofday(&ntime, 0);


Signed-off-by: CAI Qian <ca...@cc...>

--- runtest/syscalls.orig	2009-03-09 00:04:17.000000000 +0800
+++ runtest/syscalls	2009-03-09 00:15:49.000000000 +0800
@@ -622,8 +622,10 @@
 munmap02 munmap02
 munmap03 munmap03
 
-nanosleep01 nanosleep01
-nanosleep02 nanosleep02
+# The following test cases are broken by design with the syscall time
+# calculations.
+#nanosleep01 nanosleep01
+#nanosleep02 nanosleep02
 nanosleep03 nanosleep03
 nanosleep04 nanosleep04
 
@@ -699,8 +701,10 @@
 
 profil01 profil01
 
-pselect01 pselect01
-pselect01_64 pselect01_64
+# The following test cases are broken by design with the syscall time
+# calculations.
+#pselect01 pselect01
+#pselect01_64 pselect01_64
 
 ptrace01 ptrace01
 ptrace02 ptrace02