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![Ian Rogers](/assets/img/avatar_default.png)
It is possible for casts to introduce alignment issues, prefer a union for perf_record_event_update. Signed-off-by: Ian Rogers <irogers@google.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com> Cc: Athira Jajeev <atrajeev@linux.vnet.ibm.com> Cc: Colin Ian King <colin.king@intel.com> Cc: Dave Marchevsky <davemarchevsky@fb.com> Cc: German Gomez <german.gomez@arm.com> Cc: Gustavo A. R. Silva <gustavoars@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Kees Kook <keescook@chromium.org> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Riccardo Mancini <rickyman7@gmail.com> Cc: Song Liu <songliubraving@fb.com> Cc: Stephane Eranian <eranian@google.com> Link: https://lore.kernel.org/r/20220614143353.1559597-6-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
120 lines
3.8 KiB
C
120 lines
3.8 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <linux/compiler.h>
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#include <perf/cpumap.h>
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#include <string.h>
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#include "cpumap.h"
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#include "evlist.h"
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#include "evsel.h"
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#include "header.h"
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#include "machine.h"
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#include "util/synthetic-events.h"
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#include "tool.h"
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#include "tests.h"
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#include "debug.h"
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static int process_event_unit(struct perf_tool *tool __maybe_unused,
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union perf_event *event,
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struct perf_sample *sample __maybe_unused,
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struct machine *machine __maybe_unused)
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{
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struct perf_record_event_update *ev = (struct perf_record_event_update *)event;
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TEST_ASSERT_VAL("wrong id", ev->id == 123);
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TEST_ASSERT_VAL("wrong id", ev->type == PERF_EVENT_UPDATE__UNIT);
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TEST_ASSERT_VAL("wrong unit", !strcmp(ev->unit, "KRAVA"));
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return 0;
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}
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static int process_event_scale(struct perf_tool *tool __maybe_unused,
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union perf_event *event,
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struct perf_sample *sample __maybe_unused,
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struct machine *machine __maybe_unused)
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{
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struct perf_record_event_update *ev = (struct perf_record_event_update *)event;
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TEST_ASSERT_VAL("wrong id", ev->id == 123);
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TEST_ASSERT_VAL("wrong id", ev->type == PERF_EVENT_UPDATE__SCALE);
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TEST_ASSERT_VAL("wrong scale", ev->scale.scale == 0.123);
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return 0;
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}
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struct event_name {
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struct perf_tool tool;
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const char *name;
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};
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static int process_event_name(struct perf_tool *tool,
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union perf_event *event,
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struct perf_sample *sample __maybe_unused,
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struct machine *machine __maybe_unused)
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{
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struct event_name *tmp = container_of(tool, struct event_name, tool);
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struct perf_record_event_update *ev = (struct perf_record_event_update *)event;
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TEST_ASSERT_VAL("wrong id", ev->id == 123);
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TEST_ASSERT_VAL("wrong id", ev->type == PERF_EVENT_UPDATE__NAME);
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TEST_ASSERT_VAL("wrong name", !strcmp(ev->name, tmp->name));
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return 0;
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}
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static int process_event_cpus(struct perf_tool *tool __maybe_unused,
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union perf_event *event,
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struct perf_sample *sample __maybe_unused,
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struct machine *machine __maybe_unused)
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{
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struct perf_record_event_update *ev = (struct perf_record_event_update *)event;
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struct perf_cpu_map *map;
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map = cpu_map__new_data(&ev->cpus.cpus);
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TEST_ASSERT_VAL("wrong id", ev->id == 123);
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TEST_ASSERT_VAL("wrong type", ev->type == PERF_EVENT_UPDATE__CPUS);
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TEST_ASSERT_VAL("wrong cpus", perf_cpu_map__nr(map) == 3);
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TEST_ASSERT_VAL("wrong cpus", perf_cpu_map__cpu(map, 0).cpu == 1);
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TEST_ASSERT_VAL("wrong cpus", perf_cpu_map__cpu(map, 1).cpu == 2);
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TEST_ASSERT_VAL("wrong cpus", perf_cpu_map__cpu(map, 2).cpu == 3);
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perf_cpu_map__put(map);
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return 0;
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}
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static int test__event_update(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
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{
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struct evsel *evsel;
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struct event_name tmp;
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struct evlist *evlist = evlist__new_default();
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TEST_ASSERT_VAL("failed to get evlist", evlist);
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evsel = evlist__first(evlist);
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TEST_ASSERT_VAL("failed to allocate ids",
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!perf_evsel__alloc_id(&evsel->core, 1, 1));
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perf_evlist__id_add(&evlist->core, &evsel->core, 0, 0, 123);
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free((char *)evsel->unit);
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evsel->unit = strdup("KRAVA");
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TEST_ASSERT_VAL("failed to synthesize attr update unit",
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!perf_event__synthesize_event_update_unit(NULL, evsel, process_event_unit));
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evsel->scale = 0.123;
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TEST_ASSERT_VAL("failed to synthesize attr update scale",
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!perf_event__synthesize_event_update_scale(NULL, evsel, process_event_scale));
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tmp.name = evsel__name(evsel);
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TEST_ASSERT_VAL("failed to synthesize attr update name",
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!perf_event__synthesize_event_update_name(&tmp.tool, evsel, process_event_name));
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evsel->core.own_cpus = perf_cpu_map__new("1,2,3");
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TEST_ASSERT_VAL("failed to synthesize attr update cpus",
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!perf_event__synthesize_event_update_cpus(&tmp.tool, evsel, process_event_cpus));
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evlist__delete(evlist);
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return 0;
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}
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DEFINE_SUITE("Synthesize attr update", event_update);
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