linux-kernel - Re: [PATCH tip 1/1] blktrace: Use tracing_reset_online

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Date:	Wed, 28 Jan 2009 15:53:48 +0100
From:	Frédéric Weisbecker <fweisbec@...il.com>
To:	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Ingo Molnar <mingo@...e.hu>,
	Jens Axboe <jens.axboe@...cle.com>,
	Frédéric Weisbecker <fweisbec@...il.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Steven Rostedt <rostedt@...dmis.org>
Subject: Re: [PATCH tip 1/1] blktrace: Use tracing_reset_online_cpus

2009/1/28 Arnaldo Carvalho de Melo <acme@...stprotocols.net>:
> Impact: cleanup
>
> Use tracing_reset_online_cpus instead of open coding it.
>
> Cc: Jens Axboe <jens.axboe@...cle.com>
> Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
>
> diff --git a/block/blktrace.c b/block/blktrace.c
> index 1b2267c..04d81d3 100644
> --- a/block/blktrace.c
> +++ b/block/blktrace.c
> @@ -1109,12 +1109,7 @@ static void blk_tracer_print_header(struct seq_file *m)
>
>  static void blk_tracer_start(struct trace_array *tr)
>  {
> -       int cpu;
> -
> -       tr->time_start = ftrace_now(tr->cpu);
> -
> -       for_each_online_cpu(cpu)
> -               tracing_reset(tr, cpu);
> +       tracing_reset_online_cpus(tr);
>
>        mutex_lock(&blk_probe_mutex);
>        if (atomic_add_return(1, &blk_probes_ref) == 1)
>

Adding Steven in Cc, he uses to relay tracing patches as patchsets
pull request to Ingo.
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