[PATCH V8 2/7] perf tools: making coresight PMU listable
From: mathieu.poirier@linaro.org (Mathieu Poirier)
Date: 2016-09-16 15:50:28
Also in:
lkml
Subsystem:
arm/coresight framework and drivers, performance events subsystem, the rest · Maintainers:
Suzuki K Poulose, Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo, Namhyung Kim, Linus Torvalds
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