Re: [PATCH] perf: Update event buffer tail when overwriting old events

From: Namhyung Kim
Date: Tue Jul 09 2013 - 02:18:38 EST


Hi Peter,

On Mon, 8 Jul 2013 14:15:57 +0200, Peter Zijlstra wrote:
[SNIP]
> +static void
> +perf_event_set_overflow(struct perf_event *event, struct ring_buffer *rb)
> +{
> + if (event->overflow_handler != perf_event_output ||

I guess you wanted "&&" instead of "||" here.

Thanks,
Namhyung


> + event->overflow_handler != perf_event_output_overwrite)
> + return;
> +
> + if (rb->overwrite)
> + event->overflow_handler = perf_event_output_overwrite;
> + else
> + event->overflow_handler = perf_event_output;
> +}
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