From b612ba804b8a656333013ad2ee96fb2377df5dbb Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Sat, 15 Aug 2009 09:53:50 -0700 Subject: [PATCH] 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 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 --- kernel/rcupreempt_trace.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/kernel/rcupreempt_trace.c b/kernel/rcupreempt_trace.c index 7c2665cac172..11640346a507 100644 --- 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),