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Groups > linux.kernel > #1485143

[PATCH V8 2/7] perf tools: making coresight PMU listable

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Adding the required mechanic allowing 'perf list pmu' to
discover coresight ETM/PTM tracers.

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
---
 MAINTAINERS                      |  1 +
 tools/perf/arch/arm/util/Build   |  2 ++
 tools/perf/arch/arm/util/pmu.c   | 34 ++++++++++++++++++++++++++++++++++
 tools/perf/arch/arm64/util/Build |  2 ++
 4 files changed, 39 insertions(+)
 create mode 100644 tools/perf/arch/arm/util/pmu.c

diff --git a/MAINTAINERS b/MAINTAINERS
index 6781a3febd59..3ff44a5aa539 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1123,6 +1123,7 @@ F:	drivers/hwtracing/coresight/*
 F:	Documentation/trace/coresight.txt
 F:	Documentation/devicetree/bindings/arm/coresight.txt
 F:	Documentation/ABI/testing/sysfs-bus-coresight-devices-*
+F:	tools/perf/arch/arm/util/pmu.c
 
 ARM/CORGI MACHINE SUPPORT
 M:	Richard Purdie <rpurdie@rpsys.net>
diff --git a/tools/perf/arch/arm/util/Build b/tools/perf/arch/arm/util/Build
index f98da17357c0..4093fd146f46 100644
--- a/tools/perf/arch/arm/util/Build
+++ b/tools/perf/arch/arm/util/Build
@@ -2,3 +2,5 @@ libperf-$(CONFIG_DWARF) += dwarf-regs.o
 
 libperf-$(CONFIG_LOCAL_LIBUNWIND)    += unwind-libunwind.o
 libperf-$(CONFIG_LIBDW_DWARF_UNWIND) += unwind-libdw.o
+
+libperf-$(CONFIG_AUXTRACE) += pmu.o
diff --git a/tools/perf/arch/arm/util/pmu.c b/tools/perf/arch/arm/util/pmu.c
new file mode 100644
index 000000000000..af9fb666b44f
--- /dev/null
+++ b/tools/perf/arch/arm/util/pmu.c
@@ -0,0 +1,34 @@
+/*
+ * Copyright(C) 2015 Linaro Limited. All rights reserved.
+ * Author: Mathieu Poirier <mathieu.poirier@linaro.org>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <string.h>
+#include <linux/coresight-pmu.h>
+#include <linux/perf_event.h>
+
+#include "../../util/pmu.h"
+
+struct perf_event_attr
+*perf_pmu__get_default_config(struct perf_pmu *pmu __maybe_unused)
+{
+#ifdef HAVE_AUXTRACE_SUPPORT
+	if (!strcmp(pmu->name, CORESIGHT_ETM_PMU_NAME)) {
+		/* add ETM default config here */
+		pmu->selectable = true;
+	}
+#endif
+	return NULL;
+}
diff --git a/tools/perf/arch/arm64/util/Build b/tools/perf/arch/arm64/util/Build
index 02f41dba4f4f..3876dd05bb8b 100644
--- a/tools/perf/arch/arm64/util/Build
+++ b/tools/perf/arch/arm64/util/Build
@@ -1,2 +1,4 @@
 libperf-$(CONFIG_DWARF)     += dwarf-regs.o
 libperf-$(CONFIG_LOCAL_LIBUNWIND) += unwind-libunwind.o
+
+libperf-$(CONFIG_AUXTRACE) += ../../arm/util/pmu.o
-- 
2.7.4

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[PATCH V8 0/7] perf: Driver specific configuration for PMU Mathieu Poirier <mathieu.poirier@linaro.org> - 2016-09-16 18:00 +0200
  [PATCH V8 5/7] perf tools: pushing configuration down to PMU driver Mathieu Poirier <mathieu.poirier@linaro.org> - 2016-09-16 18:00 +0200
    [tip:perf/core] perf pmu: Push configuration down to PMU driver tip-bot for Mathieu Poirier <tipbot@zytor.com> - 2016-09-23 07:30 +0200
  [PATCH V8 4/7] perf tools: add infrastructure for PMU specific configuration Mathieu Poirier <mathieu.poirier@linaro.org> - 2016-09-16 18:00 +0200
  [PATCH V8 7/7] perf tools: adding sink configuration for cs_etm PMU Mathieu Poirier <mathieu.poirier@linaro.org> - 2016-09-16 18:00 +0200
    [tip:perf/core] perf tools: Add sink configuration for cs_etm PMU tip-bot for Mathieu Poirier <tipbot@zytor.com> - 2016-09-23 07:30 +0200
  [PATCH V8 2/7] perf tools: making coresight PMU listable Mathieu Poirier <mathieu.poirier@linaro.org> - 2016-09-16 18:00 +0200
    [tip:perf/core] perf tools: Make coresight PMU listable tip-bot for Mathieu Poirier <tipbot@zytor.com> - 2016-09-23 07:30 +0200
  [PATCH V8 3/7] perf tools: adding coresight etm PMU record capabilities Mathieu Poirier <mathieu.poirier@linaro.org> - 2016-09-16 18:00 +0200
    [tip:perf/core] perf tools: Add coresight etm PMU record  capabilities tip-bot for Mathieu Poirier <tipbot@zytor.com> - 2016-09-23 07:30 +0200

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