mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-05 10:29:37 +00:00
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>
119 lines
3.2 KiB
C
119 lines
3.2 KiB
C
#include "tests.h"
|
|
#include <stdio.h>
|
|
#include "cpumap.h"
|
|
#include "event.h"
|
|
#include <string.h>
|
|
#include <linux/bitops.h>
|
|
#include "debug.h"
|
|
|
|
struct machine;
|
|
|
|
static int process_event_mask(struct perf_tool *tool __maybe_unused,
|
|
union perf_event *event,
|
|
struct perf_sample *sample __maybe_unused,
|
|
struct machine *machine __maybe_unused)
|
|
{
|
|
struct cpu_map_event *map_event = &event->cpu_map;
|
|
struct cpu_map_mask *mask;
|
|
struct cpu_map_data *data;
|
|
struct cpu_map *map;
|
|
int i;
|
|
|
|
data = &map_event->data;
|
|
|
|
TEST_ASSERT_VAL("wrong type", data->type == PERF_CPU_MAP__MASK);
|
|
|
|
mask = (struct cpu_map_mask *)data->data;
|
|
|
|
TEST_ASSERT_VAL("wrong nr", mask->nr == 1);
|
|
|
|
for (i = 0; i < 20; i++) {
|
|
TEST_ASSERT_VAL("wrong cpu", test_bit(i, mask->mask));
|
|
}
|
|
|
|
map = cpu_map__new_data(data);
|
|
TEST_ASSERT_VAL("wrong nr", map->nr == 20);
|
|
|
|
for (i = 0; i < 20; i++) {
|
|
TEST_ASSERT_VAL("wrong cpu", map->map[i] == i);
|
|
}
|
|
|
|
cpu_map__put(map);
|
|
return 0;
|
|
}
|
|
|
|
static int process_event_cpus(struct perf_tool *tool __maybe_unused,
|
|
union perf_event *event,
|
|
struct perf_sample *sample __maybe_unused,
|
|
struct machine *machine __maybe_unused)
|
|
{
|
|
struct cpu_map_event *map_event = &event->cpu_map;
|
|
struct cpu_map_entries *cpus;
|
|
struct cpu_map_data *data;
|
|
struct cpu_map *map;
|
|
|
|
data = &map_event->data;
|
|
|
|
TEST_ASSERT_VAL("wrong type", data->type == PERF_CPU_MAP__CPUS);
|
|
|
|
cpus = (struct cpu_map_entries *)data->data;
|
|
|
|
TEST_ASSERT_VAL("wrong nr", cpus->nr == 2);
|
|
TEST_ASSERT_VAL("wrong cpu", cpus->cpu[0] == 1);
|
|
TEST_ASSERT_VAL("wrong cpu", cpus->cpu[1] == 256);
|
|
|
|
map = cpu_map__new_data(data);
|
|
TEST_ASSERT_VAL("wrong nr", map->nr == 2);
|
|
TEST_ASSERT_VAL("wrong cpu", map->map[0] == 1);
|
|
TEST_ASSERT_VAL("wrong cpu", map->map[1] == 256);
|
|
TEST_ASSERT_VAL("wrong refcnt", refcount_read(&map->refcnt) == 1);
|
|
cpu_map__put(map);
|
|
return 0;
|
|
}
|
|
|
|
|
|
int test__cpu_map_synthesize(int subtest __maybe_unused)
|
|
{
|
|
struct cpu_map *cpus;
|
|
|
|
/* This one is better stores in mask. */
|
|
cpus = cpu_map__new("0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19");
|
|
|
|
TEST_ASSERT_VAL("failed to synthesize map",
|
|
!perf_event__synthesize_cpu_map(NULL, cpus, process_event_mask, NULL));
|
|
|
|
cpu_map__put(cpus);
|
|
|
|
/* This one is better stores in cpu values. */
|
|
cpus = cpu_map__new("1,256");
|
|
|
|
TEST_ASSERT_VAL("failed to synthesize map",
|
|
!perf_event__synthesize_cpu_map(NULL, cpus, process_event_cpus, NULL));
|
|
|
|
cpu_map__put(cpus);
|
|
return 0;
|
|
}
|
|
|
|
static int cpu_map_print(const char *str)
|
|
{
|
|
struct cpu_map *map = cpu_map__new(str);
|
|
char buf[100];
|
|
|
|
if (!map)
|
|
return -1;
|
|
|
|
cpu_map__snprint(map, buf, sizeof(buf));
|
|
return !strcmp(buf, str);
|
|
}
|
|
|
|
int test__cpu_map_print(int subtest __maybe_unused)
|
|
{
|
|
TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1"));
|
|
TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1,5"));
|
|
TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1,3,5,7,9,11,13,15,17,19,21-40"));
|
|
TEST_ASSERT_VAL("failed to convert map", cpu_map_print("2-5"));
|
|
TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1,3-6,8-10,24,35-37"));
|
|
TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1,3-6,8-10,24,35-37"));
|
|
TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1-10,12-20,22-30,32-40"));
|
|
return 0;
|
|
}
|