linux-kernel - Re: [PATCH] trace/osnoise: Rename main variable to tracer

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Message-ID: <b4cbe5a3-c76f-4fc0-4cf6-1d6ff729b971@infradead.org>
Date:   Tue, 3 Aug 2021 07:31:10 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Daniel Bristot de Oliveira <bristot@...nel.org>,
        linux-kernel@...r.kernel.org
Cc:     Matthew Wilcox <willy@...radead.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Ingo Molnar <mingo@...hat.com>
Subject: Re: [PATCH] trace/osnoise: Rename main variable to tracer_main

On 8/3/21 1:28 AM, Daniel Bristot de Oliveira wrote:
> The *main variable in start_kthread() is causing warnings in some
> compilers/analyzers. Although it is not necessarily a problem, it is
> not a problem changing the variable name too.
> 
> Rename the *main variable to *tracer_main.
> 
> No functional change.
> 
> Fixes: c8895e271f79 ("trace/osnoise: Support hotplug operations")
> Reported-by: Randy Dunlap <rdunlap@...radead.org>
> Cc: Matthew Wilcox <willy@...radead.org>
> Cc: Steven Rostedt <rostedt@...dmis.org>
> Cc: Ingo Molnar <mingo@...hat.com>
> Cc: linux-kernel@...r.kernel.org
> Signed-off-by: Daniel Bristot de Oliveira <bristot@...nel.org>

Acked-by: Randy Dunlap <rdunlap@...radead.org>

Thanks.

> ---
>   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 0b11db9595b6..eda10d39da47 100644
> --- a/kernel/trace/trace_osnoise.c
> +++ b/kernel/trace/trace_osnoise.c
> @@ -1576,20 +1576,20 @@ static void stop_per_cpu_kthreads(void)
>   static int start_kthread(unsigned int cpu)
>   {
>   	struct task_struct *kthread;
> -	void *main = osnoise_main;
> +	void *tracer_main = osnoise_main;
>   	char comm[24];
>   
>   #ifdef CONFIG_TIMERLAT_TRACER
>   	if (osnoise_data.timerlat_tracer) {
>   		snprintf(comm, 24, "timerlat/%d", cpu);
> -		main = timerlat_main;
> +		tracer_main = timerlat_main;
>   	} else {
>   		snprintf(comm, 24, "osnoise/%d", cpu);
>   	}
>   #else
>   	snprintf(comm, 24, "osnoise/%d", cpu);
>   #endif
> -	kthread = kthread_create_on_cpu(main, NULL, cpu, comm);
> +	kthread = kthread_create_on_cpu(tracer_main, NULL, cpu, comm);
>   
>   	if (IS_ERR(kthread)) {
>   		pr_err(BANNER "could not start sampling thread\n");
> 


-- 
~Randy