File perf-streams-calculate-the-sum-of-total-streams... of Package perf.23962

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File perf-streams-calculate-the-sum-of-total-streams-hits.patch of Package perf.23962

From: Jin Yao <yao.jin@linux.intel.com>
Date: Fri, 9 Oct 2020 10:28:43 +0800
Subject: perf streams: Calculate the sum of total streams hits
Git-commit: 28904f4dcea1444adea4b51ba0af32d6c7314101
Patch-mainline: v5.10-rc1
References: jsc#SLE-13472
X-Info: adjust for context, no 9c9e754fb8048

We have used callchain_node->hit to measure the hot level of one stream.
This patch calculates the sum of hits of total streams.

Thus in next patch, we can use following formula to report hot percent
for one stream.

hot percent = callchain_node->hit / sum of total hits

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20201009022845.13141-6-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Tony Jones <tonyj@suse.de>
---
 tools/perf/util/callchain.c | 32 ++++++++++++++++++++++++++++++++
 tools/perf/util/callchain.h |  3 +++
 tools/perf/util/stream.c    |  2 ++
 tools/perf/util/stream.h    |  1 +
 4 files changed, 38 insertions(+)

diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c
index d356e73c5622..4f824bfcc072 100644
--- a/tools/perf/util/callchain.c
+++ b/tools/perf/util/callchain.c
@@ -1667,3 +1667,35 @@ bool callchain_cnode_matched(struct callchain_node *base_cnode,
 
 	return match;
 }
+
+static u64 count_callchain_hits(struct hist_entry *he)
+{
+	struct rb_root *root = &he->sorted_chain;
+	struct rb_node *rb_node = rb_first(root);
+	struct callchain_node *node;
+	u64 chain_hits = 0;
+
+	while (rb_node) {
+		node = rb_entry(rb_node, struct callchain_node, rb_node);
+		chain_hits += node->hit;
+		rb_node = rb_next(rb_node);
+	}
+
+	return chain_hits;
+}
+
+u64 callchain_total_hits(struct hists *hists)
+{
+	struct rb_node *next = rb_first_cached(&hists->entries);
+	u64 chain_hits = 0;
+
+	while (next) {
+		struct hist_entry *he = rb_entry(next, struct hist_entry,
+						 rb_node);
+
+		chain_hits += count_callchain_hits(he);
+		next = rb_next(&he->rb_node);
+	}
+
+	return chain_hits;
+}
diff --git a/tools/perf/util/callchain.h b/tools/perf/util/callchain.h
index ad27fc8c7948..ac5bea9c1eb7 100644
--- a/tools/perf/util/callchain.h
+++ b/tools/perf/util/callchain.h
@@ -13,6 +13,7 @@ struct ip_callchain;
 #include "branch.h"
 
 struct map;
+struct hists;
 
 #define HELP_PAD "\t\t\t\t"
 
@@ -302,4 +303,6 @@ void callchain_param_setup(u64 sample_type);
 bool callchain_cnode_matched(struct callchain_node *base_cnode,
 			     struct callchain_node *pair_cnode);
 
+u64 callchain_total_hits(struct hists *hists);
+
 #endif	/* __PERF_CALLCHAIN_H */
diff --git a/tools/perf/util/stream.c b/tools/perf/util/stream.c
index 0d6a7452320a..47c5956b3378 100644
--- a/tools/perf/util/stream.c
+++ b/tools/perf/util/stream.c
@@ -121,6 +121,8 @@ static void init_hot_callchain(struct hists *hists, struct evsel_streams *es)
 		update_hot_callchain(he, es);
 		next = rb_next(&he->rb_node);
 	}
+
+	es->streams_hits = callchain_total_hits(hists);
 }
 
 static int evlist__init_callchain_streams(struct evlist *evlist,
diff --git a/tools/perf/util/stream.h b/tools/perf/util/stream.h
index cb131f41f5b1..a61072eda64d 100644
--- a/tools/perf/util/stream.h
+++ b/tools/perf/util/stream.h
@@ -14,6 +14,7 @@ struct evsel_streams {
 	int			nr_streams_max;
 	int			nr_streams;
 	int			evsel_idx;
+	u64			streams_hits;
 };
 
 struct evlist_streams {

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File perf-streams-calculate-the-sum-of-total-streams-hits.patch of Package perf.23962

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