perf tools: Add coresight etm PMU record capabilities
Coresight ETMs are IP blocks used to perform HW assisted tracing on a CPU core. This patch introduce the required auxiliary API functions allowing the perf core to interact with a tracer. Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1474041004-13956-4-git-send-email-mathieu.poirier@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>steinar/wifi_calib_4_9_kernel
Mathieu Poirier
Arnaldo Carvalho de Melo
parent
7e21b0d579
commit
a818c563ae
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@ -1124,6 +1124,10 @@ F: Documentation/trace/coresight.txt
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F: Documentation/devicetree/bindings/arm/coresight.txt
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F: Documentation/ABI/testing/sysfs-bus-coresight-devices-*
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F: tools/perf/arch/arm/util/pmu.c
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F: tools/perf/arch/arm/util/auxtrace.c
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F: tools/perf/arch/arm/util/cs-etm.c
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F: tools/perf/arch/arm/util/cs-etm.h
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F: tools/perf/util/cs-etm.h
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ARM/CORGI MACHINE SUPPORT
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M: Richard Purdie <rpurdie@rpsys.net>
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@ -3,4 +3,4 @@ libperf-$(CONFIG_DWARF) += dwarf-regs.o
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libperf-$(CONFIG_LOCAL_LIBUNWIND) += unwind-libunwind.o
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libperf-$(CONFIG_LIBDW_DWARF_UNWIND) += unwind-libdw.o
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libperf-$(CONFIG_AUXTRACE) += pmu.o
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libperf-$(CONFIG_AUXTRACE) += pmu.o auxtrace.o cs-etm.o
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@ -0,0 +1,54 @@
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/*
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* Copyright(C) 2015 Linaro Limited. All rights reserved.
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* Author: Mathieu Poirier <mathieu.poirier@linaro.org>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdbool.h>
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#include <linux/coresight-pmu.h>
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#include "../../util/auxtrace.h"
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#include "../../util/evlist.h"
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#include "../../util/pmu.h"
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#include "cs-etm.h"
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struct auxtrace_record
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*auxtrace_record__init(struct perf_evlist *evlist, int *err)
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{
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struct perf_pmu *cs_etm_pmu;
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struct perf_evsel *evsel;
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bool found_etm = false;
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cs_etm_pmu = perf_pmu__find(CORESIGHT_ETM_PMU_NAME);
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if (evlist) {
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evlist__for_each_entry(evlist, evsel) {
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if (cs_etm_pmu &&
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evsel->attr.type == cs_etm_pmu->type)
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found_etm = true;
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}
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}
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if (found_etm)
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return cs_etm_record_init(err);
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/*
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* Clear 'err' even if we haven't found a cs_etm event - that way perf
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* record can still be used even if tracers aren't present. The NULL
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* return value will take care of telling the infrastructure HW tracing
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* isn't available.
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*/
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*err = 0;
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return NULL;
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}
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@ -0,0 +1,559 @@
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/*
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* Copyright(C) 2015 Linaro Limited. All rights reserved.
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* Author: Mathieu Poirier <mathieu.poirier@linaro.org>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <api/fs/fs.h>
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#include <linux/bitops.h>
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#include <linux/coresight-pmu.h>
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#include <linux/kernel.h>
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#include <linux/log2.h>
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#include <linux/types.h>
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#include "cs-etm.h"
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#include "../../perf.h"
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#include "../../util/auxtrace.h"
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#include "../../util/cpumap.h"
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#include "../../util/evlist.h"
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#include "../../util/pmu.h"
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#include "../../util/thread_map.h"
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#include "../../util/cs-etm.h"
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#include <stdlib.h>
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struct cs_etm_recording {
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struct auxtrace_record itr;
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struct perf_pmu *cs_etm_pmu;
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struct perf_evlist *evlist;
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bool snapshot_mode;
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size_t snapshot_size;
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};
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static bool cs_etm_is_etmv4(struct auxtrace_record *itr, int cpu);
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static int cs_etm_parse_snapshot_options(struct auxtrace_record *itr,
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struct record_opts *opts,
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const char *str)
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{
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struct cs_etm_recording *ptr =
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container_of(itr, struct cs_etm_recording, itr);
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unsigned long long snapshot_size = 0;
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char *endptr;
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if (str) {
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snapshot_size = strtoull(str, &endptr, 0);
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if (*endptr || snapshot_size > SIZE_MAX)
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return -1;
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}
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opts->auxtrace_snapshot_mode = true;
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opts->auxtrace_snapshot_size = snapshot_size;
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ptr->snapshot_size = snapshot_size;
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return 0;
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}
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static int cs_etm_recording_options(struct auxtrace_record *itr,
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struct perf_evlist *evlist,
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struct record_opts *opts)
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{
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struct cs_etm_recording *ptr =
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container_of(itr, struct cs_etm_recording, itr);
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struct perf_pmu *cs_etm_pmu = ptr->cs_etm_pmu;
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struct perf_evsel *evsel, *cs_etm_evsel = NULL;
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const struct cpu_map *cpus = evlist->cpus;
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bool privileged = (geteuid() == 0 || perf_event_paranoid() < 0);
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ptr->evlist = evlist;
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ptr->snapshot_mode = opts->auxtrace_snapshot_mode;
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evlist__for_each_entry(evlist, evsel) {
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if (evsel->attr.type == cs_etm_pmu->type) {
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if (cs_etm_evsel) {
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pr_err("There may be only one %s event\n",
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CORESIGHT_ETM_PMU_NAME);
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return -EINVAL;
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}
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evsel->attr.freq = 0;
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evsel->attr.sample_period = 1;
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cs_etm_evsel = evsel;
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opts->full_auxtrace = true;
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}
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}
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/* no need to continue if at least one event of interest was found */
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if (!cs_etm_evsel)
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return 0;
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if (opts->use_clockid) {
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pr_err("Cannot use clockid (-k option) with %s\n",
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CORESIGHT_ETM_PMU_NAME);
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return -EINVAL;
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}
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/* we are in snapshot mode */
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if (opts->auxtrace_snapshot_mode) {
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/*
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* No size were given to '-S' or '-m,', so go with
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* the default
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*/
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if (!opts->auxtrace_snapshot_size &&
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!opts->auxtrace_mmap_pages) {
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if (privileged) {
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opts->auxtrace_mmap_pages = MiB(4) / page_size;
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} else {
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opts->auxtrace_mmap_pages =
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KiB(128) / page_size;
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if (opts->mmap_pages == UINT_MAX)
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opts->mmap_pages = KiB(256) / page_size;
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}
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} else if (!opts->auxtrace_mmap_pages && !privileged &&
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opts->mmap_pages == UINT_MAX) {
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opts->mmap_pages = KiB(256) / page_size;
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}
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/*
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* '-m,xyz' was specified but no snapshot size, so make the
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* snapshot size as big as the auxtrace mmap area.
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*/
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if (!opts->auxtrace_snapshot_size) {
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opts->auxtrace_snapshot_size =
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opts->auxtrace_mmap_pages * (size_t)page_size;
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}
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/*
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* -Sxyz was specified but no auxtrace mmap area, so make the
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* auxtrace mmap area big enough to fit the requested snapshot
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* size.
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*/
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if (!opts->auxtrace_mmap_pages) {
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size_t sz = opts->auxtrace_snapshot_size;
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sz = round_up(sz, page_size) / page_size;
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opts->auxtrace_mmap_pages = roundup_pow_of_two(sz);
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}
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/* Snapshost size can't be bigger than the auxtrace area */
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if (opts->auxtrace_snapshot_size >
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opts->auxtrace_mmap_pages * (size_t)page_size) {
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pr_err("Snapshot size %zu must not be greater than AUX area tracing mmap size %zu\n",
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opts->auxtrace_snapshot_size,
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opts->auxtrace_mmap_pages * (size_t)page_size);
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return -EINVAL;
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}
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/* Something went wrong somewhere - this shouldn't happen */
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if (!opts->auxtrace_snapshot_size ||
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!opts->auxtrace_mmap_pages) {
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pr_err("Failed to calculate default snapshot size and/or AUX area tracing mmap pages\n");
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return -EINVAL;
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}
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}
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/* We are in full trace mode but '-m,xyz' wasn't specified */
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if (opts->full_auxtrace && !opts->auxtrace_mmap_pages) {
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if (privileged) {
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opts->auxtrace_mmap_pages = MiB(4) / page_size;
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} else {
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opts->auxtrace_mmap_pages = KiB(128) / page_size;
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if (opts->mmap_pages == UINT_MAX)
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opts->mmap_pages = KiB(256) / page_size;
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}
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}
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/* Validate auxtrace_mmap_pages provided by user */
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if (opts->auxtrace_mmap_pages) {
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unsigned int max_page = (KiB(128) / page_size);
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size_t sz = opts->auxtrace_mmap_pages * (size_t)page_size;
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if (!privileged &&
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opts->auxtrace_mmap_pages > max_page) {
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opts->auxtrace_mmap_pages = max_page;
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pr_err("auxtrace too big, truncating to %d\n",
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max_page);
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}
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if (!is_power_of_2(sz)) {
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pr_err("Invalid mmap size for %s: must be a power of 2\n",
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CORESIGHT_ETM_PMU_NAME);
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return -EINVAL;
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}
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}
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if (opts->auxtrace_snapshot_mode)
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pr_debug2("%s snapshot size: %zu\n", CORESIGHT_ETM_PMU_NAME,
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opts->auxtrace_snapshot_size);
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if (cs_etm_evsel) {
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/*
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* To obtain the auxtrace buffer file descriptor, the auxtrace
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* event must come first.
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*/
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perf_evlist__to_front(evlist, cs_etm_evsel);
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/*
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* In the case of per-cpu mmaps, we need the CPU on the
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* AUX event.
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*/
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if (!cpu_map__empty(cpus))
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perf_evsel__set_sample_bit(cs_etm_evsel, CPU);
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}
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/* Add dummy event to keep tracking */
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if (opts->full_auxtrace) {
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struct perf_evsel *tracking_evsel;
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int err;
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err = parse_events(evlist, "dummy:u", NULL);
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if (err)
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return err;
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tracking_evsel = perf_evlist__last(evlist);
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perf_evlist__set_tracking_event(evlist, tracking_evsel);
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tracking_evsel->attr.freq = 0;
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tracking_evsel->attr.sample_period = 1;
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/* In per-cpu case, always need the time of mmap events etc */
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if (!cpu_map__empty(cpus))
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perf_evsel__set_sample_bit(tracking_evsel, TIME);
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}
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return 0;
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}
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static u64 cs_etm_get_config(struct auxtrace_record *itr)
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{
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u64 config = 0;
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struct cs_etm_recording *ptr =
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container_of(itr, struct cs_etm_recording, itr);
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struct perf_pmu *cs_etm_pmu = ptr->cs_etm_pmu;
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struct perf_evlist *evlist = ptr->evlist;
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struct perf_evsel *evsel;
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evlist__for_each_entry(evlist, evsel) {
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if (evsel->attr.type == cs_etm_pmu->type) {
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/*
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* Variable perf_event_attr::config is assigned to
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* ETMv3/PTM. The bit fields have been made to match
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* the ETMv3.5 ETRMCR register specification. See the
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* PMU_FORMAT_ATTR() declarations in
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* drivers/hwtracing/coresight/coresight-perf.c for
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* details.
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*/
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config = evsel->attr.config;
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break;
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}
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}
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return config;
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}
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static size_t
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cs_etm_info_priv_size(struct auxtrace_record *itr __maybe_unused,
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struct perf_evlist *evlist __maybe_unused)
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{
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int i;
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int etmv3 = 0, etmv4 = 0;
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const struct cpu_map *cpus = evlist->cpus;
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/* cpu map is not empty, we have specific CPUs to work with */
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if (!cpu_map__empty(cpus)) {
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for (i = 0; i < cpu_map__nr(cpus); i++) {
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if (cs_etm_is_etmv4(itr, cpus->map[i]))
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etmv4++;
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else
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etmv3++;
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}
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} else {
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/* get configuration for all CPUs in the system */
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for (i = 0; i < cpu__max_cpu(); i++) {
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if (cs_etm_is_etmv4(itr, i))
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etmv4++;
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else
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etmv3++;
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}
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}
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return (CS_ETM_HEADER_SIZE +
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(etmv4 * CS_ETMV4_PRIV_SIZE) +
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(etmv3 * CS_ETMV3_PRIV_SIZE));
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}
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static const char *metadata_etmv3_ro[CS_ETM_PRIV_MAX] = {
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[CS_ETM_ETMCCER] = "mgmt/etmccer",
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[CS_ETM_ETMIDR] = "mgmt/etmidr",
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};
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static const char *metadata_etmv4_ro[CS_ETMV4_PRIV_MAX] = {
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[CS_ETMV4_TRCIDR0] = "trcidr/trcidr0",
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[CS_ETMV4_TRCIDR1] = "trcidr/trcidr1",
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[CS_ETMV4_TRCIDR2] = "trcidr/trcidr2",
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[CS_ETMV4_TRCIDR8] = "trcidr/trcidr8",
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[CS_ETMV4_TRCAUTHSTATUS] = "mgmt/trcauthstatus",
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};
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static bool cs_etm_is_etmv4(struct auxtrace_record *itr, int cpu)
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{
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bool ret = false;
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char path[PATH_MAX];
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int scan;
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unsigned int val;
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struct cs_etm_recording *ptr =
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container_of(itr, struct cs_etm_recording, itr);
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struct perf_pmu *cs_etm_pmu = ptr->cs_etm_pmu;
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/* Take any of the RO files for ETMv4 and see if it present */
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snprintf(path, PATH_MAX, "cpu%d/%s",
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cpu, metadata_etmv4_ro[CS_ETMV4_TRCIDR0]);
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scan = perf_pmu__scan_file(cs_etm_pmu, path, "%x", &val);
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/* The file was read successfully, we have a winner */
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if (scan == 1)
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ret = true;
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return ret;
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}
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static int cs_etm_get_ro(struct perf_pmu *pmu, int cpu, const char *path)
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{
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char pmu_path[PATH_MAX];
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int scan;
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unsigned int val = 0;
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/* Get RO metadata from sysfs */
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snprintf(pmu_path, PATH_MAX, "cpu%d/%s", cpu, path);
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scan = perf_pmu__scan_file(pmu, pmu_path, "%x", &val);
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if (scan != 1)
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pr_err("%s: error reading: %s\n", __func__, pmu_path);
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return val;
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}
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static void cs_etm_get_metadata(int cpu, u32 *offset,
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struct auxtrace_record *itr,
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struct auxtrace_info_event *info)
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{
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u32 increment;
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u64 magic;
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struct cs_etm_recording *ptr =
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container_of(itr, struct cs_etm_recording, itr);
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struct perf_pmu *cs_etm_pmu = ptr->cs_etm_pmu;
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/* first see what kind of tracer this cpu is affined to */
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if (cs_etm_is_etmv4(itr, cpu)) {
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magic = __perf_cs_etmv4_magic;
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/* Get trace configuration register */
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info->priv[*offset + CS_ETMV4_TRCCONFIGR] =
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||||
cs_etm_get_config(itr);
|
||||
/* Get traceID from the framework */
|
||||
info->priv[*offset + CS_ETMV4_TRCTRACEIDR] =
|
||||
coresight_get_trace_id(cpu);
|
||||
/* Get read-only information from sysFS */
|
||||
info->priv[*offset + CS_ETMV4_TRCIDR0] =
|
||||
cs_etm_get_ro(cs_etm_pmu, cpu,
|
||||
metadata_etmv4_ro[CS_ETMV4_TRCIDR0]);
|
||||
info->priv[*offset + CS_ETMV4_TRCIDR1] =
|
||||
cs_etm_get_ro(cs_etm_pmu, cpu,
|
||||
metadata_etmv4_ro[CS_ETMV4_TRCIDR1]);
|
||||
info->priv[*offset + CS_ETMV4_TRCIDR2] =
|
||||
cs_etm_get_ro(cs_etm_pmu, cpu,
|
||||
metadata_etmv4_ro[CS_ETMV4_TRCIDR2]);
|
||||
info->priv[*offset + CS_ETMV4_TRCIDR8] =
|
||||
cs_etm_get_ro(cs_etm_pmu, cpu,
|
||||
metadata_etmv4_ro[CS_ETMV4_TRCIDR8]);
|
||||
info->priv[*offset + CS_ETMV4_TRCAUTHSTATUS] =
|
||||
cs_etm_get_ro(cs_etm_pmu, cpu,
|
||||
metadata_etmv4_ro
|
||||
[CS_ETMV4_TRCAUTHSTATUS]);
|
||||
|
||||
/* How much space was used */
|
||||
increment = CS_ETMV4_PRIV_MAX;
|
||||
} else {
|
||||
magic = __perf_cs_etmv3_magic;
|
||||
/* Get configuration register */
|
||||
info->priv[*offset + CS_ETM_ETMCR] = cs_etm_get_config(itr);
|
||||
/* Get traceID from the framework */
|
||||
info->priv[*offset + CS_ETM_ETMTRACEIDR] =
|
||||
coresight_get_trace_id(cpu);
|
||||
/* Get read-only information from sysFS */
|
||||
info->priv[*offset + CS_ETM_ETMCCER] =
|
||||
cs_etm_get_ro(cs_etm_pmu, cpu,
|
||||
metadata_etmv3_ro[CS_ETM_ETMCCER]);
|
||||
info->priv[*offset + CS_ETM_ETMIDR] =
|
||||
cs_etm_get_ro(cs_etm_pmu, cpu,
|
||||
metadata_etmv3_ro[CS_ETM_ETMIDR]);
|
||||
|
||||
/* How much space was used */
|
||||
increment = CS_ETM_PRIV_MAX;
|
||||
}
|
||||
|
||||
/* Build generic header portion */
|
||||
info->priv[*offset + CS_ETM_MAGIC] = magic;
|
||||
info->priv[*offset + CS_ETM_CPU] = cpu;
|
||||
/* Where the next CPU entry should start from */
|
||||
*offset += increment;
|
||||
}
|
||||
|
||||
static int cs_etm_info_fill(struct auxtrace_record *itr,
|
||||
struct perf_session *session,
|
||||
struct auxtrace_info_event *info,
|
||||
size_t priv_size)
|
||||
{
|
||||
int i;
|
||||
u32 offset;
|
||||
u64 nr_cpu, type;
|
||||
const struct cpu_map *cpus = session->evlist->cpus;
|
||||
struct cs_etm_recording *ptr =
|
||||
container_of(itr, struct cs_etm_recording, itr);
|
||||
struct perf_pmu *cs_etm_pmu = ptr->cs_etm_pmu;
|
||||
|
||||
if (priv_size != cs_etm_info_priv_size(itr, session->evlist))
|
||||
return -EINVAL;
|
||||
|
||||
if (!session->evlist->nr_mmaps)
|
||||
return -EINVAL;
|
||||
|
||||
/* If the cpu_map is empty all CPUs are involved */
|
||||
nr_cpu = cpu_map__empty(cpus) ? cpu__max_cpu() : cpu_map__nr(cpus);
|
||||
/* Get PMU type as dynamically assigned by the core */
|
||||
type = cs_etm_pmu->type;
|
||||
|
||||
/* First fill out the session header */
|
||||
info->type = PERF_AUXTRACE_CS_ETM;
|
||||
info->priv[CS_HEADER_VERSION_0] = 0;
|
||||
info->priv[CS_PMU_TYPE_CPUS] = type << 32;
|
||||
info->priv[CS_PMU_TYPE_CPUS] |= nr_cpu;
|
||||
info->priv[CS_ETM_SNAPSHOT] = ptr->snapshot_mode;
|
||||
|
||||
offset = CS_ETM_SNAPSHOT + 1;
|
||||
|
||||
/* cpu map is not empty, we have specific CPUs to work with */
|
||||
if (!cpu_map__empty(cpus)) {
|
||||
for (i = 0; i < cpu_map__nr(cpus) && offset < priv_size; i++)
|
||||
cs_etm_get_metadata(cpus->map[i], &offset, itr, info);
|
||||
} else {
|
||||
/* get configuration for all CPUs in the system */
|
||||
for (i = 0; i < cpu__max_cpu(); i++)
|
||||
cs_etm_get_metadata(i, &offset, itr, info);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int cs_etm_find_snapshot(struct auxtrace_record *itr __maybe_unused,
|
||||
int idx, struct auxtrace_mmap *mm,
|
||||
unsigned char *data __maybe_unused,
|
||||
u64 *head, u64 *old)
|
||||
{
|
||||
pr_debug3("%s: mmap index %d old head %zu new head %zu size %zu\n",
|
||||
__func__, idx, (size_t)*old, (size_t)*head, mm->len);
|
||||
|
||||
*old = *head;
|
||||
*head += mm->len;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int cs_etm_snapshot_start(struct auxtrace_record *itr)
|
||||
{
|
||||
struct cs_etm_recording *ptr =
|
||||
container_of(itr, struct cs_etm_recording, itr);
|
||||
struct perf_evsel *evsel;
|
||||
|
||||
evlist__for_each_entry(ptr->evlist, evsel) {
|
||||
if (evsel->attr.type == ptr->cs_etm_pmu->type)
|
||||
return perf_evsel__disable(evsel);
|
||||
}
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
static int cs_etm_snapshot_finish(struct auxtrace_record *itr)
|
||||
{
|
||||
struct cs_etm_recording *ptr =
|
||||
container_of(itr, struct cs_etm_recording, itr);
|
||||
struct perf_evsel *evsel;
|
||||
|
||||
evlist__for_each_entry(ptr->evlist, evsel) {
|
||||
if (evsel->attr.type == ptr->cs_etm_pmu->type)
|
||||
return perf_evsel__enable(evsel);
|
||||
}
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
static u64 cs_etm_reference(struct auxtrace_record *itr __maybe_unused)
|
||||
{
|
||||
return (((u64) rand() << 0) & 0x00000000FFFFFFFFull) |
|
||||
(((u64) rand() << 32) & 0xFFFFFFFF00000000ull);
|
||||
}
|
||||
|
||||
static void cs_etm_recording_free(struct auxtrace_record *itr)
|
||||
{
|
||||
struct cs_etm_recording *ptr =
|
||||
container_of(itr, struct cs_etm_recording, itr);
|
||||
free(ptr);
|
||||
}
|
||||
|
||||
static int cs_etm_read_finish(struct auxtrace_record *itr, int idx)
|
||||
{
|
||||
struct cs_etm_recording *ptr =
|
||||
container_of(itr, struct cs_etm_recording, itr);
|
||||
struct perf_evsel *evsel;
|
||||
|
||||
evlist__for_each_entry(ptr->evlist, evsel) {
|
||||
if (evsel->attr.type == ptr->cs_etm_pmu->type)
|
||||
return perf_evlist__enable_event_idx(ptr->evlist,
|
||||
evsel, idx);
|
||||
}
|
||||
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
struct auxtrace_record *cs_etm_record_init(int *err)
|
||||
{
|
||||
struct perf_pmu *cs_etm_pmu;
|
||||
struct cs_etm_recording *ptr;
|
||||
|
||||
cs_etm_pmu = perf_pmu__find(CORESIGHT_ETM_PMU_NAME);
|
||||
|
||||
if (!cs_etm_pmu) {
|
||||
*err = -EINVAL;
|
||||
goto out;
|
||||
}
|
||||
|
||||
ptr = zalloc(sizeof(struct cs_etm_recording));
|
||||
if (!ptr) {
|
||||
*err = -ENOMEM;
|
||||
goto out;
|
||||
}
|
||||
|
||||
ptr->cs_etm_pmu = cs_etm_pmu;
|
||||
ptr->itr.parse_snapshot_options = cs_etm_parse_snapshot_options;
|
||||
ptr->itr.recording_options = cs_etm_recording_options;
|
||||
ptr->itr.info_priv_size = cs_etm_info_priv_size;
|
||||
ptr->itr.info_fill = cs_etm_info_fill;
|
||||
ptr->itr.find_snapshot = cs_etm_find_snapshot;
|
||||
ptr->itr.snapshot_start = cs_etm_snapshot_start;
|
||||
ptr->itr.snapshot_finish = cs_etm_snapshot_finish;
|
||||
ptr->itr.reference = cs_etm_reference;
|
||||
ptr->itr.free = cs_etm_recording_free;
|
||||
ptr->itr.read_finish = cs_etm_read_finish;
|
||||
|
||||
*err = 0;
|
||||
return &ptr->itr;
|
||||
out:
|
||||
return NULL;
|
||||
}
|
||||
|
|
@ -0,0 +1,23 @@
|
|||
/*
|
||||
* 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/>.
|
||||
*/
|
||||
|
||||
#ifndef INCLUDE__PERF_CS_ETM_H__
|
||||
#define INCLUDE__PERF_CS_ETM_H__
|
||||
|
||||
struct auxtrace_record *cs_etm_record_init(int *err);
|
||||
|
||||
#endif
|
||||
|
|
@ -1,4 +1,6 @@
|
|||
libperf-$(CONFIG_DWARF) += dwarf-regs.o
|
||||
libperf-$(CONFIG_LOCAL_LIBUNWIND) += unwind-libunwind.o
|
||||
|
||||
libperf-$(CONFIG_AUXTRACE) += ../../arm/util/pmu.o
|
||||
libperf-$(CONFIG_AUXTRACE) += ../../arm/util/pmu.o \
|
||||
../../arm/util/auxtrace.o \
|
||||
../../arm/util/cs-etm.o
|
||||
|
|
|
|||
|
|
@ -892,6 +892,7 @@ int perf_event__process_auxtrace_info(struct perf_tool *tool __maybe_unused,
|
|||
return intel_pt_process_auxtrace_info(event, session);
|
||||
case PERF_AUXTRACE_INTEL_BTS:
|
||||
return intel_bts_process_auxtrace_info(event, session);
|
||||
case PERF_AUXTRACE_CS_ETM:
|
||||
case PERF_AUXTRACE_UNKNOWN:
|
||||
default:
|
||||
return -EINVAL;
|
||||
|
|
|
|||
|
|
@ -41,6 +41,7 @@ enum auxtrace_type {
|
|||
PERF_AUXTRACE_UNKNOWN,
|
||||
PERF_AUXTRACE_INTEL_PT,
|
||||
PERF_AUXTRACE_INTEL_BTS,
|
||||
PERF_AUXTRACE_CS_ETM,
|
||||
};
|
||||
|
||||
enum itrace_period_type {
|
||||
|
|
|
|||
|
|
@ -0,0 +1,74 @@
|
|||
/*
|
||||
* 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/>.
|
||||
*/
|
||||
|
||||
#ifndef INCLUDE__UTIL_PERF_CS_ETM_H__
|
||||
#define INCLUDE__UTIL_PERF_CS_ETM_H__
|
||||
|
||||
/* Versionning header in case things need tro change in the future. That way
|
||||
* decoding of old snapshot is still possible.
|
||||
*/
|
||||
enum {
|
||||
/* Starting with 0x0 */
|
||||
CS_HEADER_VERSION_0,
|
||||
/* PMU->type (32 bit), total # of CPUs (32 bit) */
|
||||
CS_PMU_TYPE_CPUS,
|
||||
CS_ETM_SNAPSHOT,
|
||||
CS_HEADER_VERSION_0_MAX,
|
||||
};
|
||||
|
||||
/* Beginning of header common to both ETMv3 and V4 */
|
||||
enum {
|
||||
CS_ETM_MAGIC,
|
||||
CS_ETM_CPU,
|
||||
};
|
||||
|
||||
/* ETMv3/PTM metadata */
|
||||
enum {
|
||||
/* Dynamic, configurable parameters */
|
||||
CS_ETM_ETMCR = CS_ETM_CPU + 1,
|
||||
CS_ETM_ETMTRACEIDR,
|
||||
/* RO, taken from sysFS */
|
||||
CS_ETM_ETMCCER,
|
||||
CS_ETM_ETMIDR,
|
||||
CS_ETM_PRIV_MAX,
|
||||
};
|
||||
|
||||
/* ETMv4 metadata */
|
||||
enum {
|
||||
/* Dynamic, configurable parameters */
|
||||
CS_ETMV4_TRCCONFIGR = CS_ETM_CPU + 1,
|
||||
CS_ETMV4_TRCTRACEIDR,
|
||||
/* RO, taken from sysFS */
|
||||
CS_ETMV4_TRCIDR0,
|
||||
CS_ETMV4_TRCIDR1,
|
||||
CS_ETMV4_TRCIDR2,
|
||||
CS_ETMV4_TRCIDR8,
|
||||
CS_ETMV4_TRCAUTHSTATUS,
|
||||
CS_ETMV4_PRIV_MAX,
|
||||
};
|
||||
|
||||
#define KiB(x) ((x) * 1024)
|
||||
#define MiB(x) ((x) * 1024 * 1024)
|
||||
|
||||
#define CS_ETM_HEADER_SIZE (CS_HEADER_VERSION_0_MAX * sizeof(u64))
|
||||
|
||||
static const u64 __perf_cs_etmv3_magic = 0x3030303030303030ULL;
|
||||
static const u64 __perf_cs_etmv4_magic = 0x4040404040404040ULL;
|
||||
#define CS_ETMV3_PRIV_SIZE (CS_ETM_PRIV_MAX * sizeof(u64))
|
||||
#define CS_ETMV4_PRIV_SIZE (CS_ETMV4_PRIV_MAX * sizeof(u64))
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue