From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Jin Yao <yao.jin@linux.intel.com>
Cc: jolsa@kernel.org, peterz@infradead.org, mingo@redhat.com,
alexander.shishkin@linux.intel.com, Linux-kernel@vger.kernel.org,
ak@linux.intel.com, kan.liang@intel.com, yao.jin@intel.com
Subject: Re: [PATCH v5 03/12] perf util: Extend rbtree to support shadow stats
Date: Fri, 1 Dec 2017 11:10:01 -0300 [thread overview]
Message-ID: <20171201141001.GW3298@kernel.org> (raw)
In-Reply-To: <1512125856-22056-4-git-send-email-yao.jin@linux.intel.com>
Em Fri, Dec 01, 2017 at 06:57:27PM +0800, Jin Yao escreveu:
> Previously the rbtree was used to link generic metrics.
Try to make the one line subject more descriptive, I'm changing it to:
perf stat: Extend rbtree to support per-thread shadow stats
- Arnaldo
> This patches adds new ctx/type/stat into rbtree keys because we
> will use this rbtree to maintain shadow metrics to replace original
> a couple of static arrays for supporting per-thread shadow stats.
>
> Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
> ---
> tools/perf/util/stat-shadow.c | 27 +++++++++++++++++++++++++++
> 1 file changed, 27 insertions(+)
>
> diff --git a/tools/perf/util/stat-shadow.c b/tools/perf/util/stat-shadow.c
> index 5853901..c53b80d 100644
> --- a/tools/perf/util/stat-shadow.c
> +++ b/tools/perf/util/stat-shadow.c
> @@ -45,7 +45,10 @@ struct stats walltime_nsecs_stats;
> struct saved_value {
> struct rb_node rb_node;
> struct perf_evsel *evsel;
> + enum stat_type type;
> + int ctx;
> int cpu;
> + struct runtime_stat *stat;
> struct stats stats;
> };
>
> @@ -58,6 +61,30 @@ static int saved_value_cmp(struct rb_node *rb_node, const void *entry)
>
> if (a->cpu != b->cpu)
> return a->cpu - b->cpu;
> +
> + /*
> + * Previously the rbtree was used to link generic metrics.
> + * The keys were evsel/cpu. Now the rbtree is extended to support
> + * per-thread shadow stats. For shadow stats case, the keys
> + * are cpu/type/ctx/stat (evsel is NULL). For generic metrics
> + * case, the keys are still evsel/cpu (type/ctx/stat are 0 or NULL).
> + */
> + if (a->type != b->type)
> + return a->type - b->type;
> +
> + if (a->ctx != b->ctx)
> + return a->ctx - b->ctx;
> +
> + if (a->evsel == NULL && b->evsel == NULL) {
> + if (a->stat == b->stat)
> + return 0;
> +
> + if ((char *)a->stat < (char *)b->stat)
> + return -1;
> +
> + return 1;
> + }
> +
> if (a->evsel == b->evsel)
> return 0;
> if ((char *)a->evsel < (char *)b->evsel)
> --
> 2.7.4
next prev parent reply other threads:[~2017-12-01 14:10 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-01 10:57 [PATCH v5 00/12] perf stat: Enable '--per-thread' on all thread Jin Yao
2017-12-01 10:57 ` [PATCH v5 01/12] perf util: Create rblist__exit() function Jin Yao
2017-12-06 16:36 ` [tip:perf/core] perf rblist: " tip-bot for Jin Yao
2017-12-01 10:57 ` [PATCH v5 02/12] perf util: Define a structure for runtime shadow stats Jin Yao
2017-12-01 14:02 ` Arnaldo Carvalho de Melo
2017-12-02 4:39 ` Jin, Yao
2017-12-01 10:57 ` [PATCH v5 03/12] perf util: Extend rbtree to support " Jin Yao
2017-12-01 14:10 ` Arnaldo Carvalho de Melo [this message]
2017-12-02 4:40 ` Jin, Yao
2017-12-01 10:57 ` [PATCH v5 04/12] perf util: Add rbtree node_delete ops Jin Yao
2017-12-01 14:14 ` Arnaldo Carvalho de Melo
2017-12-01 18:29 ` Andi Kleen
2017-12-06 16:37 ` [tip:perf/core] perf stat: Add rbtree node_delete op tip-bot for Jin Yao
2017-12-01 10:57 ` [PATCH v5 05/12] perf util: Create the runtime_stat init/exit function Jin Yao
2017-12-01 10:57 ` [PATCH v5 06/12] perf util: Update and print per-thread shadow stats Jin Yao
2017-12-01 14:21 ` Arnaldo Carvalho de Melo
2017-12-02 4:46 ` Jin, Yao
2017-12-01 10:57 ` [PATCH v5 07/12] perf util: Remove a set of shadow stats static variables Jin Yao
2017-12-01 10:57 ` [PATCH v5 08/12] perf stat: Allocate shadow stats buffer for threads Jin Yao
2017-12-01 10:57 ` [PATCH v5 09/12] perf stat: Update or print per-thread stats Jin Yao
2017-12-01 10:57 ` [PATCH v5 10/12] perf util: Reuse thread_map__new_by_uid to enumerate threads from /proc Jin Yao
2017-12-01 14:44 ` Arnaldo Carvalho de Melo
2017-12-01 15:02 ` Arnaldo Carvalho de Melo
2017-12-02 4:53 ` Jin, Yao
2017-12-02 4:47 ` Jin, Yao
2017-12-01 10:57 ` [PATCH v5 11/12] perf stat: Remove --per-thread pid/tid limitation Jin Yao
2017-12-01 10:57 ` [PATCH v5 12/12] perf stat: Resort '--per-thread' result Jin Yao
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