rcu: Make rcupreempt_trace.c look at offline CPUs

Given that offline CPUs can now have non-zero counters, we need to dump counters for offline CPUs as well as for online CPUs. Signed-off-by: Paul E. McKenney <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] LKML-Reference: <12503552313921-git-send-email-> Signed-off-by: Ingo Molnar <[email protected]>
rtvt123 · Aug 15, 2009 · b612ba8 · b612ba8
1 parent 8064d54
commit b612ba8
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/kernel/rcupreempt_trace.c b/kernel/rcupreempt_trace.c
@@ -236,12 +236,13 @@ static ssize_t rcuctrs_read(struct file *filp, char __user *buffer,
 
 	cnt += snprintf(&rcupreempt_trace_buf[cnt], RCUPREEMPT_TRACE_BUF_SIZE,
 				"CPU last cur F M\n");
-	for_each_online_cpu(cpu) {
+	for_each_possible_cpu(cpu) {
 		long *flipctr = rcupreempt_flipctr(cpu);
 		cnt += snprintf(&rcupreempt_trace_buf[cnt],
 				RCUPREEMPT_TRACE_BUF_SIZE - cnt,
-					"%3d %4ld %3ld %d %d\n",
+					"%3d%c %4ld %3ld %d %d\n",
 			       cpu,
+			       cpu_is_offline(cpu) ? '!' : ' ',
 			       flipctr[!f],
 			       flipctr[f],
 			       rcupreempt_flip_flag(cpu),