linux-kernel - Re: [PATCH 07/11] cxl/mem: Trace Memory Module Event Record

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Date:   Tue, 22 Nov 2022 17:36:14 -0500
From:   Steven Rostedt <rostedt@...dmis.org>
To:     ira.weiny@...el.com
Cc:     Dan Williams <dan.j.williams@...el.com>,
        Alison Schofield <alison.schofield@...el.com>,
        Vishal Verma <vishal.l.verma@...el.com>,
        Ben Widawsky <bwidawsk@...nel.org>,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>,
        Davidlohr Bueso <dave@...olabs.net>,
        linux-kernel@...r.kernel.org, linux-cxl@...r.kernel.org
Subject: Re: [PATCH 07/11] cxl/mem: Trace Memory Module Event Record

On Thu, 10 Nov 2022 10:57:54 -0800
ira.weiny@...el.com wrote:

>  static bool cxl_event_tracing_enabled(void)
>  {
>  	return trace_cxl_generic_event_enabled() ||
>  	       trace_cxl_general_media_enabled() ||
> -	       trace_cxl_dram_enabled();
> +	       trace_cxl_dram_enabled() ||
> +	       trace_cxl_memory_module_enabled();
>  }
>  

My only concern with this patch set is that gcc may decide to not inline
this function and you will lose the performance of the static branches
provided by the trace_cxl_*enabled() functions.

Other than that, for patches 5-7 from a tracing perspective:

Reviewed-by: Steven Rostedt (Google) <rostedt@...dmis.org>

-- Steve