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Message-ID: <20220927081400.14364-2-yangyicong@huawei.com>
Date: Tue, 27 Sep 2022 16:13:58 +0800
From: Yicong Yang <yangyicong@...wei.com>
To: <acme@...nel.org>, <peterz@...radead.org>,
<alexander.shishkin@...ux.intel.com>, <leo.yan@...aro.org>,
<james.clark@....com>, <will@...nel.org>,
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<suzuki.poulose@....com>, <jonathan.cameron@...wei.com>,
<john.garry@...wei.com>, <mike.leach@...aro.org>
CC: <gregkh@...uxfoundation.org>, <helgaas@...nel.org>,
<lorenzo.pieralisi@....com>,
<shameerali.kolothum.thodi@...wei.com>, <mingo@...hat.com>,
<linux-kernel@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>,
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<liuqi6124@...il.com>
Subject: [PATCH v14 1/3] perf tool: arm: Refactor event list iteration in auxtrace_record__init()
From: Qi Liu <liuqi115@...wei.com>
Add find_pmu_for_event() and use to simplify logic in
auxtrace_record_init(). find_pmu_for_event() will be
reused in subsequent patches.
Reviewed-by: Leo Yan <leo.yan@...aro.org>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>
Reviewed-by: John Garry <john.garry@...wei.com>
Signed-off-by: Qi Liu <liuqi115@...wei.com>
Signed-off-by: Yicong Yang <yangyicong@...ilicon.com>
---
tools/perf/arch/arm/util/auxtrace.c | 53 ++++++++++++++++++-----------
1 file changed, 34 insertions(+), 19 deletions(-)
diff --git a/tools/perf/arch/arm/util/auxtrace.c b/tools/perf/arch/arm/util/auxtrace.c
index 5fc6a2a3dbc5..384c7cfda0fd 100644
--- a/tools/perf/arch/arm/util/auxtrace.c
+++ b/tools/perf/arch/arm/util/auxtrace.c
@@ -50,16 +50,32 @@ static struct perf_pmu **find_all_arm_spe_pmus(int *nr_spes, int *err)
return arm_spe_pmus;
}
+static struct perf_pmu *find_pmu_for_event(struct perf_pmu **pmus,
+ int pmu_nr, struct evsel *evsel)
+{
+ int i;
+
+ if (!pmus)
+ return NULL;
+
+ for (i = 0; i < pmu_nr; i++) {
+ if (evsel->core.attr.type == pmus[i]->type)
+ return pmus[i];
+ }
+
+ return NULL;
+}
+
struct auxtrace_record
*auxtrace_record__init(struct evlist *evlist, int *err)
{
- struct perf_pmu *cs_etm_pmu;
+ struct perf_pmu *cs_etm_pmu = NULL;
+ struct perf_pmu **arm_spe_pmus = NULL;
struct evsel *evsel;
- bool found_etm = false;
+ struct perf_pmu *found_etm = NULL;
struct perf_pmu *found_spe = NULL;
- struct perf_pmu **arm_spe_pmus = NULL;
+ int auxtrace_event_cnt = 0;
int nr_spes = 0;
- int i = 0;
if (!evlist)
return NULL;
@@ -68,24 +84,23 @@ struct auxtrace_record
arm_spe_pmus = find_all_arm_spe_pmus(&nr_spes, err);
evlist__for_each_entry(evlist, evsel) {
- if (cs_etm_pmu &&
- evsel->core.attr.type == cs_etm_pmu->type)
- found_etm = true;
-
- if (!nr_spes || found_spe)
- continue;
-
- for (i = 0; i < nr_spes; i++) {
- if (evsel->core.attr.type == arm_spe_pmus[i]->type) {
- found_spe = arm_spe_pmus[i];
- break;
- }
- }
+ if (cs_etm_pmu && !found_etm)
+ found_etm = find_pmu_for_event(&cs_etm_pmu, 1, evsel);
+
+ if (arm_spe_pmus && !found_spe)
+ found_spe = find_pmu_for_event(arm_spe_pmus, nr_spes, evsel);
}
+
free(arm_spe_pmus);
- if (found_etm && found_spe) {
- pr_err("Concurrent ARM Coresight ETM and SPE operation not currently supported\n");
+ if (found_etm)
+ auxtrace_event_cnt++;
+
+ if (found_spe)
+ auxtrace_event_cnt++;
+
+ if (auxtrace_event_cnt > 1) {
+ pr_err("Concurrent AUX trace operation not currently supported\n");
*err = -EOPNOTSUPP;
return NULL;
}
--
2.24.0
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