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ftrace: remove printks from irqsoff trace 

Printing out new max latencies was fine for the old RT tracer. But for
mainline it is a bit messy. We also need to test if the run queue
is locked before we can do the print. This means that we may not be
printing out latencies if the run queue is locked on another CPU.
This produces inconsistencies in the output.

This patch simply removes the print altogether.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Cc: pq@iki.fi
Cc: proski@gnu.org
Cc: sandmann@redhat.com
Cc: a.p.zijlstra@chello.nl
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Steven Rostedt 2008-05-22 00:22:20 -04:00 committed by Thomas Gleixner
parent 7e18d8e701
commit da89a7a253
1 changed files with 0 additions and 16 deletions
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16
kernel/trace/trace_irqsoff.c
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@ -165,22 +165,6 @@ check_critical_timing(struct trace_array *tr,
update_max_tr_single(tr, current, cpu);
if (!runqueue_is_locked()) {
if (tracing_thresh) {
printk(KERN_INFO "(%16s-%-5d|#%d): %lu us critical"
" section violates %lu us threshold.\n",
current->comm, current->pid,
raw_smp_processor_id(),
latency, nsecs_to_usecs(tracing_thresh));
} else {
printk(KERN_INFO "(%16s-%-5d|#%d): new %lu us"
" maximum-latency critical section.\n",
current->comm, current->pid,
raw_smp_processor_id(),
latency);
}
}
max_sequence++;
out_unlock: