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From: Daniel Bristot de Oliveira <bristot@kernel.org>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Daniel Bristot de Oliveira <bristot@kernel.org>,
	Ingo Molnar <mingo@redhat.com>, Tom Zanussi <zanussi@kernel.org>,
	Masami Hiramatsu <mhiramat@kernel.org>,
	Juri Lelli <juri.lelli@redhat.com>,
	Clark Williams <williams@redhat.com>,
	John Kacur <jkacur@redhat.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
	linux-rt-users@vger.kernel.org,
	linux-trace-devel@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH V9 9/9] tracing/osnoise: Remove PREEMPT_RT ifdefs from inside functions
Date: Sun, 31 Oct 2021 19:05:04 +0100	[thread overview]
Message-ID: <37ee0881b033cdc513efc84ebea26cf77880c8c2.1635702894.git.bristot@kernel.org> (raw)
In-Reply-To: <cover.1635702894.git.bristot@kernel.org>

Remove CONFIG_PREEMPT_RT from inside functions, avoiding
compilation problems in the future.

Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Tom Zanussi <zanussi@kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Clark Williams <williams@redhat.com>
Cc: John Kacur <jkacur@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Daniel Bristot de Oliveira <bristot@kernel.org>
Cc: linux-rt-users@vger.kernel.org
Cc: linux-trace-devel@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Suggested-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
---
 kernel/trace/trace_osnoise.c | 13 ++++---------
 1 file changed, 4 insertions(+), 9 deletions(-)

diff --git a/kernel/trace/trace_osnoise.c b/kernel/trace/trace_osnoise.c
index a7dadf4bfc5f..3e4a1651e329 100644
--- a/kernel/trace/trace_osnoise.c
+++ b/kernel/trace/trace_osnoise.c
@@ -1518,9 +1518,11 @@ static enum hrtimer_restart timerlat_irq(struct hrtimer *timer)
 	 * running, the thread needs to receive the softirq delta_start. The
 	 * reason being is that the softirq will be the last to be unfolded,
 	 * resseting the thread delay to zero.
+	 *
+	 * The PREEMPT_RT is a special case, though. As softirqs run as threads
+	 * on RT, moving the thread is enough.
 	 */
-#ifndef CONFIG_PREEMPT_RT
-	if (osn_var->softirq.delta_start) {
+	if (!IS_ENABLED(CONFIG_PREEMPT_RT) && osn_var->softirq.delta_start) {
 		copy_int_safe_time(osn_var, &osn_var->thread.delta_start,
 				   &osn_var->softirq.delta_start);
 
@@ -1530,13 +1532,6 @@ static enum hrtimer_restart timerlat_irq(struct hrtimer *timer)
 		copy_int_safe_time(osn_var, &osn_var->thread.delta_start,
 				    &osn_var->irq.delta_start);
 	}
-#else /* CONFIG_PREEMPT_RT */
-	/*
-	 * The sofirqs run as threads on RT, so there is not need
-	 * to keep track of it.
-	 */
-	copy_int_safe_time(osn_var, &osn_var->thread.delta_start, &osn_var->irq.delta_start);
-#endif /* CONFIG_PREEMPT_RT */
 
 	/*
 	 * Compute the current time with the expected time.
-- 
2.31.1


      parent reply	other threads:[~2021-10-31 18:07 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-10-31 18:04 [PATCH V9 0/9] osnoise: Support multiple instances (for RTLA) Daniel Bristot de Oliveira
2021-10-31 18:04 ` [PATCH V9 1/9] tracing/osnoise: Do not follow tracing_cpumask Daniel Bristot de Oliveira
2021-10-31 18:04 ` [PATCH V9 2/9] tracing/osnoise: Improve comments about barrier need for NMI callbacks Daniel Bristot de Oliveira
2021-10-31 18:04 ` [PATCH V9 3/9] tracing/osnoise: Split workload start from the tracer start Daniel Bristot de Oliveira
2021-10-31 18:04 ` [PATCH V9 4/9] tracing/osnoise: Use start/stop_per_cpu_kthreads() on osnoise_cpus_write() Daniel Bristot de Oliveira
2021-10-31 18:05 ` [PATCH V9 5/9] tracing/osnoise: Support a list of trace_array *tr Daniel Bristot de Oliveira
2021-10-31 18:05 ` [PATCH V9 6/9] tracing/osnoise: Remove TIMERLAT ifdefs from inside functions Daniel Bristot de Oliveira
2021-10-31 18:05 ` [PATCH V9 7/9] tracing/osnoise: Allow multiple instances of the same tracer Daniel Bristot de Oliveira
2021-10-31 18:05 ` [PATCH V9 8/9] tracing/osnoise: Remove STACKTRACE ifdefs from inside functions Daniel Bristot de Oliveira
2021-10-31 18:05 ` Daniel Bristot de Oliveira [this message]

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