On Mon, 12 Nov 2012 13:01:39 -0300, Arnaldo Carvalho de Melo wrote: > Em Mon, Nov 12, 2012 at 02:55:46PM +0100, Jiri Olsa escreveu: >> On Mon, Nov 12, 2012 at 11:10:52AM +0900, Namhyung Kim wrote: >> > On Fri, 9 Nov 2012 18:42:49 -0300, Arnaldo Carvalho de Melo wrote: >> > > . Add a 'link' method for hists, so that we can have the leader with >> > > buckets for all the entries in all the hists. This new method >> > > is now used in the default 'diff' output, making the sum of the >> > > 'baseline' >> > > column be 100%, eliminating blind spots. Now we need to use this >> > > for 'diff' with > 2 perf.data files and for multi event 'report' and >> > > 'annotate'. > >> > I'm not sure it can be used for group report at least in its current >> > form. IIUC it connects multiple hist entries using a list head and >> > create a dummy entry in the leader if need be. But it didn't handle >> > non-leader entries so it's hard to tell which is which if less entries >> > are present only. For example consider following case: > >> > leader member1 member2 >> > A A A >> > B >> > C >> > D > >> > where leader, member1 and member2 are evsel/hists and A, B, C and D are >> > hist entries. After 'linking' the entries the leader will have >> > following linkage: > >> > leader >> > A -> A -> A >> > B >> > C (dummy) -> C >> > D (dummy) -> D > >> > In this case, for entry A the leader can determine which entry came from >> > which hists by looking its order in the list. For entry B the leader >> > can use zero value for them since the list is empty. However for >> > entries C and D, it cannot know which one is the right hists unless it >> > records a hist index or creates dummy entry and insert it in a correct >> > order (looks far from an optimal solution). Am I missing something? > >> there's hists pointer in hist_entry if that's what you look for > > And from there to evsel->idx. In your patchset you even introduce > hists_2_evsel(), right?
Ah, okay. I worried about a possiblity of non-consecutive event groups for some reason, but that's not gonna happen in the future? Thanks, Namhyung -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
