perf metric: Modify resolution and recursion check

Modify resolution. Rather than resolving a list of metrics, resolve a
metric immediately after it is added.

This simplifies knowing the root of the metric's tree so that IDs may be
associated with it.

A bug in the current implementation is that all the IDs were placed on
the first metric in a metric group.

Rather than maintain data on IDs' parents to detect cycles, maintain
a list of visited metrics and detect cycles if the same metric is
visited twice.

Only place the root metric onto the list of metrics.

Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Andi Kleen <ak@linux.intel.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Antonov <alexander.antonov@linux.intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andrew Kilroy <andrew.kilroy@arm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Changbin Du <changbin.du@intel.com>
Cc: Denys Zagorui <dzagorui@cisco.com>
Cc: Fabian Hemmer <copy@copy.sh>
Cc: Felix Fietkau <nbd@nbd.name>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jacob Keller <jacob.e.keller@intel.com>
Cc: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Joakim Zhang <qiangqing.zhang@nxp.com>
Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kees Kook <keescook@chromium.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Nicholas Fraser <nfraser@codeweavers.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Paul Clarke <pc@us.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Riccardo Mancini <rickyman7@gmail.com>
Cc: Sami Tolvanen <samitolvanen@google.com>
Cc: ShihCheng Tu <mrtoastcheng@gmail.com>
Cc: Song Liu <songliubraving@fb.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Sumanth Korikkar <sumanthk@linux.ibm.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Wan Jiabing <wanjiabing@vivo.com>
Cc: Zhen Lei <thunder.leizhen@huawei.com>
Link: https://lore.kernel.org/r/20211015172132.1162559-10-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 5 insertions, 5 deletions

diff --git a/tools/perf/tests/expr.c b/tools/perf/tests/expr.c
index 3c16f3df1980..718c13e5a0f4 100644
--- a/tools/perf/tests/expr.c
+++ b/tools/perf/tests/expr.c
@@ -24,8 +24,8 @@ static int test_ids_union(void)
 	ids2 = ids__new();
 	TEST_ASSERT_VAL("ids__new", ids2);
 
-	TEST_ASSERT_EQUAL("ids__insert", ids__insert(ids1, strdup("foo"), NULL), 0);
-	TEST_ASSERT_EQUAL("ids__insert", ids__insert(ids1, strdup("bar"), NULL), 0);
+	TEST_ASSERT_EQUAL("ids__insert", ids__insert(ids1, strdup("foo")), 0);
+	TEST_ASSERT_EQUAL("ids__insert", ids__insert(ids1, strdup("bar")), 0);
 
 	ids1 = ids__union(ids1, ids2);
 	TEST_ASSERT_EQUAL("union", (int)hashmap__size(ids1), 2);
@@ -33,7 +33,7 @@ static int test_ids_union(void)
 	/* Union {foo, bar} against {foo}. */
 	ids2 = ids__new();
 	TEST_ASSERT_VAL("ids__new", ids2);
-	TEST_ASSERT_EQUAL("ids__insert", ids__insert(ids2, strdup("foo"), NULL), 0);
+	TEST_ASSERT_EQUAL("ids__insert", ids__insert(ids2, strdup("foo")), 0);
 
 	ids1 = ids__union(ids1, ids2);
 	TEST_ASSERT_EQUAL("union", (int)hashmap__size(ids1), 2);
@@ -41,8 +41,8 @@ static int test_ids_union(void)
 	/* Union {foo, bar} against {bar,baz}. */
 	ids2 = ids__new();
 	TEST_ASSERT_VAL("ids__new", ids2);
-	TEST_ASSERT_EQUAL("ids__insert", ids__insert(ids2, strdup("bar"), NULL), 0);
-	TEST_ASSERT_EQUAL("ids__insert", ids__insert(ids2, strdup("baz"), NULL), 0);
+	TEST_ASSERT_EQUAL("ids__insert", ids__insert(ids2, strdup("bar")), 0);
+	TEST_ASSERT_EQUAL("ids__insert", ids__insert(ids2, strdup("baz")), 0);
 
 	ids1 = ids__union(ids1, ids2);
 	TEST_ASSERT_EQUAL("union", (int)hashmap__size(ids1), 3);