Re: [PATCH v2 0/5] perf tools: add meta-data header support in pipe mode

From: Namhyung Kim
Date: Tue May 15 2012 - 22:34:48 EST


On Tue, 15 May 2012 20:05:06 -0600, David Ahern wrote:
> On 5/15/12 7:34 PM, Namhyung Kim wrote:
>> Hi, Stephane
>> On Tue, 15 May 2012 13:28:10 +0200, Stephane Eranian wrote:
>>> This patch series adds meta-data support to perf record/report in pipe
>>> mode:
>>> perf record -o - foo | perf inject -b | perf report -i -
>>> We had meta-data (information about host configuration, perf tool version,...)
>>> in regular (file) mode but it was lacking in pipe mode. This patch series fixes
>>> this.
>> In addition to this change, I think it'd be great if we keep this
>> meta-data somewhere for later use - I guess perf report and
>> annotate on TUI, at least, will need it too. Just a suggestion :).
>> Thanks,
>> Namhyung
> It is there -- see perf-report header. It gets dropped on pipe mode
> b/c the meta-data is in the header.
> David

Do you mean this?

struct perf_report {
struct perf_tool tool;
struct perf_session *session;
char const *input_name;
bool force, use_tui, use_gtk, use_stdio;
bool hide_unresolved;
bool dont_use_callchains;
bool show_full_info;
bool show_threads;
bool inverted_callchain;
struct perf_read_values show_threads_values;
const char *pretty_printing_style;
symbol_filter_t annotate_init;
const char *cpu_list;
const char *symbol_filter_str;

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