linux-kernel - Re: [PATCH 01/10] perf/core: Add macro to test for event exclusion flags

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Message-ID: <20181119125807.GD9761@hirez.programming.kicks-ass.net>
Date:   Mon, 19 Nov 2018 13:58:07 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Andrew Murray <andrew.murray@....com>
Cc:     Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Will Deacon <will.deacon@....com>,
        Mark Rutland <mark.rutland@....com>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Borislav Petkov <bp@...en8.de>, x86@...nel.org,
        linux-alpha@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 01/10] perf/core: Add macro to test for event exclusion
 flags

On Fri, Nov 16, 2018 at 10:24:04AM +0000, Andrew Murray wrote:
> Add a macro that tests if any of the perf event exclusion flags
> are set on a given event.

It is in fact an inline function, not a CPP macro.

> Signed-off-by: Andrew Murray <andrew.murray@....com>
> ---
>  include/linux/perf_event.h | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
> index 53c500f..89ee7fa 100644
> --- a/include/linux/perf_event.h
> +++ b/include/linux/perf_event.h
> @@ -1004,6 +1004,15 @@ perf_event__output_id_sample(struct perf_event *event,
>  extern void
>  perf_log_lost_samples(struct perf_event *event, u64 lost);
>  
> +static inline bool event_has_exclude_flags(struct perf_event *event)
> +{
> +	struct perf_event_attr *attr = &event->attr;
> +
> +	return attr->exclude_idle || attr->exclude_user ||
> +	       attr->exclude_kernel || attr->exclude_hv ||
> +	       attr->exclude_guest || attr->exclude_host;
> +}
> +
>  static inline bool is_sampling_event(struct perf_event *event)
>  {
>  	return event->attr.sample_period != 0;
> -- 
> 2.7.4
>