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perf metric: Add DCache_L2 to metric parse test

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Adding test that compute DCache_L2 metrics with other related metrics in it.

Committer notes:

Fixed up this:

  tests/parse-metric.c:285:7: error: missing field 'val' initializer [-Werror,-Wmissing-field-initializers]
                  { 0 },
                      ^

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Reviewed-by: Kajol Jain <kjain@linux.ibm.com>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: John Garry <john.garry@huawei.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Clarke <pc@us.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20200719181320.785305-15-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2020-07-19 20:13:15 +02:00 committed by Arnaldo Carvalho de Melo
parent 55f30d6839
commit 5a606f3b9c
1 changed files with 71 additions and 0 deletions
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71
tools/perf/tests/parse-metric.c
View file

@ -36,6 +36,27 @@ static struct pmu_event pme_test[] = {
.metric_expr = "(dcache_miss_cpi + icache_miss_cycles)",
.metric_name = "cache_miss_cycles",
},
{
.metric_expr = "l2_rqsts.demand_data_rd_hit + l2_rqsts.pf_hit + l2_rqsts.rfo_hit",
.metric_name = "DCache_L2_All_Hits",
},
{
.metric_expr = "max(l2_rqsts.all_demand_data_rd - l2_rqsts.demand_data_rd_hit, 0) + "
"l2_rqsts.pf_miss + l2_rqsts.rfo_miss",
.metric_name = "DCache_L2_All_Miss",
},
{
.metric_expr = "dcache_l2_all_hits + dcache_l2_all_miss",
.metric_name = "DCache_L2_All",
},
{
.metric_expr = "d_ratio(dcache_l2_all_hits, dcache_l2_all)",
.metric_name = "DCache_L2_Hits",
},
{
.metric_expr = "d_ratio(dcache_l2_all_miss, dcache_l2_all)",
.metric_name = "DCache_L2_Misses",
},
};
static struct pmu_events_map map = {
@ -194,10 +215,60 @@ static int test_cache_miss_cycles(void)
return 0;
}
/*
* DCache_L2_All_Hits = l2_rqsts.demand_data_rd_hit + l2_rqsts.pf_hit + l2_rqsts.rfo_hi
* DCache_L2_All_Miss = max(l2_rqsts.all_demand_data_rd - l2_rqsts.demand_data_rd_hit, 0) +
* l2_rqsts.pf_miss + l2_rqsts.rfo_miss
* DCache_L2_All = dcache_l2_all_hits + dcache_l2_all_miss
* DCache_L2_Hits = d_ratio(dcache_l2_all_hits, dcache_l2_all)
* DCache_L2_Misses = d_ratio(dcache_l2_all_miss, dcache_l2_all)
*
* l2_rqsts.demand_data_rd_hit = 100
* l2_rqsts.pf_hit = 200
* l2_rqsts.rfo_hi = 300
* l2_rqsts.all_demand_data_rd = 400
* l2_rqsts.pf_miss = 500
* l2_rqsts.rfo_miss = 600
*
* DCache_L2_All_Hits = 600
* DCache_L2_All_Miss = MAX(400 - 100, 0) + 500 + 600 = 1400
* DCache_L2_All = 600 + 1400 = 2000
* DCache_L2_Hits = 600 / 2000 = 0.3
* DCache_L2_Misses = 1400 / 2000 = 0.7
*/
static int test_dcache_l2(void)
{
double ratio;
struct value vals[] = {
{ .event = "l2_rqsts.demand_data_rd_hit", .val = 100 },
{ .event = "l2_rqsts.pf_hit", .val = 200 },
{ .event = "l2_rqsts.rfo_hit", .val = 300 },
{ .event = "l2_rqsts.all_demand_data_rd", .val = 400 },
{ .event = "l2_rqsts.pf_miss", .val = 500 },
{ .event = "l2_rqsts.rfo_miss", .val = 600 },
{ .event = NULL, },
};
TEST_ASSERT_VAL("failed to compute metric",
compute_metric("DCache_L2_Hits", vals, &ratio) == 0);
TEST_ASSERT_VAL("DCache_L2_Hits failed, wrong ratio",
ratio == 0.3);
TEST_ASSERT_VAL("failed to compute metric",
compute_metric("DCache_L2_Misses", vals, &ratio) == 0);
TEST_ASSERT_VAL("DCache_L2_Misses failed, wrong ratio",
ratio == 0.7);
return 0;
}
int test__parse_metric(struct test *test __maybe_unused, int subtest __maybe_unused)
{
TEST_ASSERT_VAL("IPC failed", test_ipc() == 0);
TEST_ASSERT_VAL("frontend failed", test_frontend() == 0);
TEST_ASSERT_VAL("cache_miss_cycles failed", test_cache_miss_cycles() == 0);
TEST_ASSERT_VAL("DCache_L2 failed", test_dcache_l2() == 0);
return 0;
}