[Patch] rcutorture: tag success/failure line with module parameters

[Patch] rcutorture: tag success/failure line with module parameters

[Paul E. McKenney]

Hello!

A long-running rcutorture test can overflow dmesg, so that the line
containing the module parameters is lost.  Although it is usually
possible to retrieve this information from the log files, it is much
better to just tag it onto the final success/failure line so that it
may be easily found.  This patch does just that.

Signed-off-by: <paulmck@us.ibm.com>
---

 rcutorture.c |   23 +++++++++++++++--------
 1 files changed, 15 insertions(+), 8 deletions(-)

diff -urpNa -X dontdiff linux-2.6.16-rc1-mm4/kernel/rcutorture.c linux-2.6.16-rc1-mm4-rcutortureendpars/kernel/rcutorture.c
--- linux-2.6.16-rc1-mm4/kernel/rcutorture.c	2006-02-02 16:04:26.000000000 -0800
+++ linux-2.6.16-rc1-mm4-rcutortureendpars/kernel/rcutorture.c	2006-02-02 18:34:52.000000000 -0800
@@ -441,6 +441,16 @@ rcu_torture_shuffle(void *arg)
 	return 0;
 }
 
+static inline void
+rcu_torture_print_module_parms(char *tag)
+{
+	printk(KERN_ALERT TORTURE_FLAG "--- %s: nreaders=%d "
+		"stat_interval=%d verbose=%d test_no_idle_hz=%d "
+		"shuffle_interval = %d\n",
+		tag, nrealreaders, stat_interval, verbose, test_no_idle_hz,
+		shuffle_interval);
+}
+
 static void
 rcu_torture_cleanup(void)
 {
@@ -483,9 +493,10 @@ rcu_torture_cleanup(void)
 	rcu_barrier();
 
 	rcu_torture_stats_print();  /* -After- the stats thread is stopped! */
-	printk(KERN_ALERT TORTURE_FLAG
-	       "--- End of test: %s\n",
-	       atomic_read(&n_rcu_torture_error) == 0 ? "SUCCESS" : "FAILURE");
+	if (atomic_read(&n_rcu_torture_error))
+		rcu_torture_print_module_parms("End of test: FAILURE");
+	else
+		rcu_torture_print_module_parms("End of test: SUCCESS");
 }
 
 static int
@@ -501,11 +512,7 @@ rcu_torture_init(void)
 		nrealreaders = nreaders;
 	else
 		nrealreaders = 2 * num_online_cpus();
-	printk(KERN_ALERT TORTURE_FLAG "--- Start of test: nreaders=%d "
-		"stat_interval=%d verbose=%d test_no_idle_hz=%d "
-		"shuffle_interval = %d\n",
-		nrealreaders, stat_interval, verbose, test_no_idle_hz,
-		shuffle_interval);
+	rcu_torture_print_module_parms("Start of test");
 	fullstop = 0;
 
 	/* Set up the freelist. */