Re: [PATCH V6 03/16] perf/core: Add support for PERF_SAMPLE_CODE_PAGE_SIZE

Peter Zijlstra
2020-08-10T21:41:19Z

On Mon, Aug 10, 2020 at 02:24:23PM -0700, Kan Liang wrote:
> From: Stephane Eranian <eranian@google.com>
>
> When studying code layout, it is useful to capture the page size of the
> sampled code address.
>
> Add a new sample type for code page size.
> The new sample type requires collecting the ip. The code page size can
> be calculated from the IRQ-safe perf_get_page_size().
>
> Only the generic support is covered. The large PEBS will be disabled
> with this sample type.

-ENOREASON