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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /tools/perf/arch/x86/util/auxtrace.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/perf/arch/x86/util/auxtrace.c')
-rw-r--r--tools/perf/arch/x86/util/auxtrace.c75
1 files changed, 75 insertions, 0 deletions
diff --git a/tools/perf/arch/x86/util/auxtrace.c b/tools/perf/arch/x86/util/auxtrace.c
new file mode 100644
index 000000000..3da506e13
--- /dev/null
+++ b/tools/perf/arch/x86/util/auxtrace.c
@@ -0,0 +1,75 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * auxtrace.c: AUX area tracing support
+ * Copyright (c) 2013-2014, Intel Corporation.
+ */
+
+#include <errno.h>
+#include <stdbool.h>
+
+#include "../../../util/header.h"
+#include "../../../util/debug.h"
+#include "../../../util/pmu.h"
+#include "../../../util/auxtrace.h"
+#include "../../../util/intel-pt.h"
+#include "../../../util/intel-bts.h"
+#include "../../../util/evlist.h"
+
+static
+struct auxtrace_record *auxtrace_record__init_intel(struct evlist *evlist,
+ int *err)
+{
+ struct perf_pmu *intel_pt_pmu;
+ struct perf_pmu *intel_bts_pmu;
+ struct evsel *evsel;
+ bool found_pt = false;
+ bool found_bts = false;
+
+ intel_pt_pmu = perf_pmu__find(INTEL_PT_PMU_NAME);
+ if (intel_pt_pmu)
+ intel_pt_pmu->auxtrace = true;
+ intel_bts_pmu = perf_pmu__find(INTEL_BTS_PMU_NAME);
+ if (intel_bts_pmu)
+ intel_bts_pmu->auxtrace = true;
+
+ evlist__for_each_entry(evlist, evsel) {
+ if (intel_pt_pmu && evsel->core.attr.type == intel_pt_pmu->type)
+ found_pt = true;
+ if (intel_bts_pmu && evsel->core.attr.type == intel_bts_pmu->type)
+ found_bts = true;
+ }
+
+ if (found_pt && found_bts) {
+ pr_err("intel_pt and intel_bts may not be used together\n");
+ *err = -EINVAL;
+ return NULL;
+ }
+
+ if (found_pt)
+ return intel_pt_recording_init(err);
+
+ if (found_bts)
+ return intel_bts_recording_init(err);
+
+ return NULL;
+}
+
+struct auxtrace_record *auxtrace_record__init(struct evlist *evlist,
+ int *err)
+{
+ char buffer[64];
+ int ret;
+
+ *err = 0;
+
+ ret = get_cpuid(buffer, sizeof(buffer));
+ if (ret) {
+ *err = ret;
+ return NULL;
+ }
+
+ if (!strncmp(buffer, "GenuineIntel,", 13))
+ return auxtrace_record__init_intel(evlist, err);
+
+ return NULL;
+}