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Commit b612ba80 authored by Paul E. McKenney's avatar Paul E. McKenney Committed by Ingo Molnar
Browse files

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: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: laijs@cn.fujitsu.com
Cc: dipankar@in.ibm.com
Cc: josht@linux.vnet.ibm.com
Cc: akpm@linux-foundation.org
Cc: mathieu.desnoyers@polymtl.ca
Cc: dvhltc@us.ibm.com
Cc: niv@us.ibm.com
Cc: peterz@infradead.org
Cc: rostedt@goodmis.org
Cc: hugh.dickins@tiscali.co.uk
Cc: benh@kernel.crashing.org
LKML-Reference: <12503552313921-git-send-email->
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 8064d549

kernel/rcupreempt_trace.c

+3 −2
Original line number Diff line number Diff line
@@ -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),