linux-kernel - [PATCH 2/2] trace/timerlat: Fix indentation on timerlat

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Date:   Tue, 29 Jun 2021 19:10:27 +0200
From:   Daniel Bristot de Oliveira <bristot@...hat.com>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     Daniel Bristot de Oliveira <bristot@...hat.com>,
        Ingo Molnar <mingo@...hat.com>,
        Dan Carpenter <dan.carpenter@...cle.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] trace/timerlat: Fix indentation on timerlat_main()

Dan Carpenter reported that:

 The patch a955d7eac177: "trace: Add timerlat tracer" from Jun 22,
 2021, leads to the following static checker warning:

	kernel/trace/trace_osnoise.c:1400 timerlat_main()
	warn: inconsistent indenting

here:
  1389          while (!kthread_should_stop()) {
  1390                  now = ktime_to_ns(hrtimer_cb_get_time(&tlat->timer));
  1391                  diff = now - tlat->abs_period;
  1392
  1393                  s.seqnum = tlat->count;
  1394                  s.timer_latency = diff;
  1395                  s.context = THREAD_CONTEXT;
  1396
  1397                  trace_timerlat_sample(&s);
  1398
  1399  #ifdef CONFIG_STACKTRACE
  1400          if (osnoise_data.print_stack)
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
	    This should be indented another tab?

  1401                  if (osnoise_data.print_stack <= time_to_us(diff))
  1402                          timerlat_dump_stack();
  1403  #endif /* CONFIG_STACKTRACE */
  1404
  1405                  tlat->tracing_thread = false;
  1406                  if (osnoise_data.stop_tracing_total)
  1407                          if (time_to_us(diff) >= osnoise_data.stop_tracing_total)
  1408                                  osnoise_stop_tracing();
  1409
  1410                  wait_next_period(tlat);
  1411          }

And the static checker is right. Fix the indentation.

Cc: Steven Rostedt <rostedt@...dmis.org>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Daniel Bristot de Oliveira <bristot@...hat.com>
Cc: Dan Carpenter <dan.carpenter@...cle.com>
Cc: linux-kernel@...r.kernel.org
Fixes: a955d7eac177 ("trace: Add timerlat tracer")
Reported-by: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: Daniel Bristot de Oliveira <bristot@...hat.com>
---
 kernel/trace/trace_osnoise.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/kernel/trace/trace_osnoise.c b/kernel/trace/trace_osnoise.c
index cc1faca1a620..a7e3c24dee13 100644
--- a/kernel/trace/trace_osnoise.c
+++ b/kernel/trace/trace_osnoise.c
@@ -1403,9 +1403,9 @@ static int timerlat_main(void *data)
 		trace_timerlat_sample(&s);
 
 #ifdef CONFIG_STACKTRACE
-	if (osnoise_data.print_stack)
-		if (osnoise_data.print_stack <= time_to_us(diff))
-			timerlat_dump_stack();
+		if (osnoise_data.print_stack)
+			if (osnoise_data.print_stack <= time_to_us(diff))
+				timerlat_dump_stack();
 #endif /* CONFIG_STACKTRACE */
 
 		tlat->tracing_thread = false;
-- 
2.31.1