On Tue, Dec 24, 2013 at 05:22:09PM +0900, Namhyung Kim wrote:
> From: Namhyung Kim <[email protected]>
>
> Maintain accumulated stat information in hist_entry->stat_acc if
> symbol_conf.cumulate_callchain is set. Fields in ->stat_acc have same
> vaules initially, and will be updated as callchain is processed later.
>
> Cc: Arun Sharma <[email protected]>
> Cc: Frederic Weisbecker <[email protected]>
> Signed-off-by: Namhyung Kim <[email protected]>
> ---
> tools/perf/util/hist.c | 18 ++++++++++++++++++
> tools/perf/util/sort.h | 1 +
> tools/perf/util/symbol.h | 1 +
> 3 files changed, 20 insertions(+)
>
> diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
> index 283aa1972b4f..b61e2fa42412 100644
> --- a/tools/perf/util/hist.c
> +++ b/tools/perf/util/hist.c
> @@ -237,6 +237,8 @@ static bool hists__decay_entry(struct hists *hists,
> struct hist_entry *he)
> return true;
>
> he_stat__decay(&he->stat);
> + if (symbol_conf.cumulate_callchain)
> + he_stat__decay(he->stat_acc);
>
> if (!he->filtered)
> hists->stats.total_period -= prev_period - he->stat.period;
> @@ -284,6 +286,15 @@ static struct hist_entry *hist_entry__new(struct
> hist_entry *template)
there's callchain size computation in here:
size_t callchain_size = symbol_conf.use_callchain ? sizeof(struct
callchain_root) : 0;
I wonder we could make it zero for symbol_conf.cumulate_callchain
jirka
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