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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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ec09a42a6d
The refcount_t type and corresponding API should be used instead of atomic_t when the variable is used as a reference counter. This allows to avoid accidental refcounter overflows that might lead to use-after-free situations. Signed-off-by: Elena Reshetova <elena.reshetova@intel.com> Signed-off-by: David Windsor <dwindsor@gmail.com> Signed-off-by: Hans Liljestrand <ishkamiel@gmail.com> Signed-off-by: Kees Kook <keescook@chromium.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: David Windsor <dwindsor@gmail.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Hans Liljestrand <ishkamiel@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kees Kook <keescook@chromium.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Matija Glavinic Pecotic <matija.glavinic-pecotic.ext@nokia.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: alsa-devel@alsa-project.org Link: http://lkml.kernel.org/r/1487691303-31858-3-git-send-email-elena.reshetova@intel.com [ fixed mixed conversion to refcount in tests/cpumap.c ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
120 lines
3.2 KiB
C
120 lines
3.2 KiB
C
#include "tests.h"
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#include <stdio.h>
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#include "cpumap.h"
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#include "event.h"
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#include <string.h>
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#include <linux/bitops.h>
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#include "debug.h"
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struct machine;
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static int process_event_mask(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 cpu_map_event *map_event = &event->cpu_map;
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struct cpu_map_mask *mask;
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struct cpu_map_data *data;
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struct cpu_map *map;
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int i;
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data = &map_event->data;
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TEST_ASSERT_VAL("wrong type", data->type == PERF_CPU_MAP__MASK);
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mask = (struct cpu_map_mask *)data->data;
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TEST_ASSERT_VAL("wrong nr", mask->nr == 1);
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for (i = 0; i < 20; i++) {
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TEST_ASSERT_VAL("wrong cpu", test_bit(i, mask->mask));
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}
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map = cpu_map__new_data(data);
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TEST_ASSERT_VAL("wrong nr", map->nr == 20);
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for (i = 0; i < 20; i++) {
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TEST_ASSERT_VAL("wrong cpu", map->map[i] == i);
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}
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cpu_map__put(map);
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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 cpu_map_event *map_event = &event->cpu_map;
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struct cpu_map_entries *cpus;
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struct cpu_map_data *data;
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struct cpu_map *map;
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data = &map_event->data;
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TEST_ASSERT_VAL("wrong type", data->type == PERF_CPU_MAP__CPUS);
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cpus = (struct cpu_map_entries *)data->data;
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TEST_ASSERT_VAL("wrong nr", cpus->nr == 2);
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TEST_ASSERT_VAL("wrong cpu", cpus->cpu[0] == 1);
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TEST_ASSERT_VAL("wrong cpu", cpus->cpu[1] == 256);
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map = cpu_map__new_data(data);
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TEST_ASSERT_VAL("wrong nr", map->nr == 2);
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TEST_ASSERT_VAL("wrong cpu", map->map[0] == 1);
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TEST_ASSERT_VAL("wrong cpu", map->map[1] == 256);
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TEST_ASSERT_VAL("wrong refcnt", refcount_read(&map->refcnt) == 1);
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cpu_map__put(map);
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return 0;
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}
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int test__cpu_map_synthesize(int subtest __maybe_unused)
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{
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struct cpu_map *cpus;
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/* This one is better stores in mask. */
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cpus = cpu_map__new("0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19");
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TEST_ASSERT_VAL("failed to synthesize map",
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!perf_event__synthesize_cpu_map(NULL, cpus, process_event_mask, NULL));
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cpu_map__put(cpus);
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/* This one is better stores in cpu values. */
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cpus = cpu_map__new("1,256");
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TEST_ASSERT_VAL("failed to synthesize map",
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!perf_event__synthesize_cpu_map(NULL, cpus, process_event_cpus, NULL));
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cpu_map__put(cpus);
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return 0;
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}
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static int cpu_map_print(const char *str)
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{
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struct cpu_map *map = cpu_map__new(str);
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char buf[100];
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if (!map)
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return -1;
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cpu_map__snprint(map, buf, sizeof(buf));
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return !strcmp(buf, str);
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}
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int test__cpu_map_print(int subtest __maybe_unused)
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{
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TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1"));
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TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1,5"));
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TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1,3,5,7,9,11,13,15,17,19,21-40"));
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TEST_ASSERT_VAL("failed to convert map", cpu_map_print("2-5"));
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TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1,3-6,8-10,24,35-37"));
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TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1,3-6,8-10,24,35-37"));
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TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1-10,12-20,22-30,32-40"));
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return 0;
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}
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