On 15.05.14 18:08:29, Alexander Shishkin wrote:
> @@ -488,9 +488,14 @@ struct perf_event_mmap_page {
>* In this case the kernel will not over-write unread data.
>*
>* See perf_output_put_handle() for the data ordering.
> + *
> + * data_{offset,size} indicate the lo
Currently, the actual perf ring buffer is one page into the mmap area,
following the user page and the userspace follows this convention. This
patch adds data_{offset,size} fields to user_page that can be used by
userspace instead for locating perf data in the mmap area.
Right now, it is made to f
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