linux-kernel - Re: [PATCH 07/10] perf: Directly pass PERF_AUX_* flags to perf_aux_output

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Date:   Fri, 17 Feb 2017 15:40:23 +0200
From:   Alexander Shishkin <alexander.shishkin@...ux.intel.com>
To:     Will Deacon <will.deacon@....com>,
        linux-arm-kernel@...ts.infradead.org
Cc:     marc.zyngier@....com, mark.rutland@....com, kim.phillips@....com,
        alex.bennee@...aro.org, christoffer.dall@...aro.org,
        tglx@...utronix.de, peterz@...radead.org, robh@...nel.org,
        suzuki.poulose@....com, pawel.moll@....com,
        mathieu.poirier@...aro.org, mingo@...hat.com,
        linux-kernel@...r.kernel.org, Will Deacon <will.deacon@....com>
Subject: Re: [PATCH 07/10] perf: Directly pass PERF_AUX_* flags to perf_aux_output_end

Will Deacon <will.deacon@....com> writes:

> @@ -485,7 +485,8 @@ int intel_bts_interrupt(void)
>  		return handled;
>  
>  	perf_aux_output_end(&bts->handle, local_xchg(&buf->data_size, 0),
> -			    !!local_xchg(&buf->lost, 0));
> +			    local_xchg(&buf->lost, 0) ?
> +			    PERF_AUX_FLAG_OVERWRITE : 0);

Heh, this one would have taken some time to debug. :)

Regards,
--
Alex