forge/linux-uconsole
1
0
Fork 0
Code Issues 1 Pull requests Projects Releases Packages Wiki Activity Actions

perf tools: making coresight PMU listable

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

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
This commit is contained in:
Mathieu Poirier 2015-10-20 16:18:53 +00:00
commit 2eb654b5c6
5 changed files with 46 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

1
MAINTAINERS
View file

@ -1007,6 +1007,7 @@ 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>

1
tools/perf/MANIFEST
View file

@ -57,6 +57,7 @@ include/asm-generic/bitops/const_hweight.h
include/asm-generic/bitops/fls64.h
include/asm-generic/bitops/__fls.h
include/asm-generic/bitops/fls.h
include/linux/coresight-pmu.h
include/linux/perf_event.h
include/linux/list.h
include/linux/hash.h

2
tools/perf/arch/arm/util/Build
View file

@ -2,3 +2,5 @@ libperf-$(CONFIG_DWARF) += dwarf-regs.o
libperf-$(CONFIG_LIBUNWIND) += unwind-libunwind.o
libperf-$(CONFIG_LIBDW_DWARF_UNWIND) += unwind-libdw.o
libperf-$(CONFIG_AUXTRACE) += pmu.o

34
tools/perf/arch/arm/util/pmu.c Normal file
View file

@ -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;
}

11
tools/perf/config/Makefile
View file

@ -647,9 +647,14 @@ ifdef LIBBABELTRACE
endif
ifndef NO_AUXTRACE
ifeq ($(feature-get_cpuid), 0)
msg := $(warning Your gcc lacks the __get_cpuid() builtin, disables support for auxtrace/Intel PT, please install a newer gcc);
NO_AUXTRACE := 1
ifeq ($(ARCH),x86)
ifeq ($(feature-get_cpuid), 0)
msg := $(warning Your gcc lacks the __get_cpuid() builtin, disables support for auxtrace/Intel PT, please install a newer gcc);
NO_AUXTRACE := 1
else
$(call detected,CONFIG_AUXTRACE)
CFLAGS += -DHAVE_AUXTRACE_SUPPORT
endif
else
$(call detected,CONFIG_AUXTRACE)
CFLAGS += -DHAVE_AUXTRACE_SUPPORT