lkml.org 
[lkml]   [2016]   [Sep]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH V8 2/7] perf tools: making coresight PMU listable
    Date
    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
    \
     
     \ /
      Last update: 2016-09-17 09:59    [W:5.557 / U:0.032 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site