Re: [PATCH v2 13/13] perf tools: add feature header record to pipe-mode

[Jiri Olsa]

On Tue, May 23, 2017 at 12:48:53AM -0700, David Carrillo-Cisneros wrote:

SNIP

> +int perf_event__synthesize_features(struct perf_tool *tool,
> +				    struct perf_session *session,
> +				    struct perf_evlist *evlist,
> +				    perf_event__handler_t process)
> +{
> +	struct perf_header *header = &session->header;
> +	struct feat_fd fdd;
> +	struct feature_event *fe;
> +	size_t sz, sz_hdr;
> +	int feat, ret;
> +
> +	sz_hdr = sizeof(fe->header);
> +	sz = sizeof(union perf_event);
> +	/* get a nice alignment */
> +	sz = PERF_ALIGN(sz, getpagesize());

we have page_size global variable for this

jirka