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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 <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: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Paul E. McKenney 2009-08-15 09:53:50 -07:00 committed by Ingo Molnar
parent 8064d54929
commit b612ba804b
1 changed files with 3 additions and 2 deletions
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5
kernel/rcupreempt_trace.c
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@ -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),